Date: Mon, 21 Nov 2022 18:19:16 +0100 From: Mateusz Piotrowski <0mp@FreeBSD.org> To: freebsd-dtrace@freebsd.org Subject: In DTrace, why does timestamp increase after a call to chill() but vtimestamp and walltimestamp do not? Message-ID: <F2030DBF-E15F-40BB-90D8-394EF6331FDC@FreeBSD.org>
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Hello all,
I'd like to understand why calling chill() in a DTrace action block =
increases the timestampvariable, but not vtimestamp and walltimestamp.
Here's an example showing timestamp increasing after a call to chill():
# dtrace -w -c true -n 'pid$target:::entry {self->t =3D $1; =
chill(1); printf("%d\n", $1 - self->t);}' timestamp
dtrace: description 'pid$target:::entry ' matched 3082 probes
dtrace: allowing destructive actions
dtrace: pid 6734 has exited
CPU ID FUNCTION:NAME
5 83475 _r_debug_postinit:entry 11258
=20
5 85771 atexit:entry 2218
=20
5 86468 __libc_atexit:entry 491
=20
5 86428 exit:entry 441
=20
5 85397 __cxa_thread_call_dtors:entry 441
=20
5 86213 __cxa_finalize:entry 447
=20
5 86213 __cxa_finalize:entry 565
=20
5 83470 _rtld_addr_phdr:entry 454
=20
5 86213 __cxa_finalize:entry 431
=20
5 83470 _rtld_addr_phdr:entry 1645
=20
5 84405 _exit:entry 432
If we run the same script but use walltimestamp (or vtimestamp), we'll =
see the counter did not increase:
# dtrace -w -c true -n 'pid$target:::entry {self->t =3D $1; =
chill(1); printf("%d\n", $1 - self->t);}' walltimestamp
dtrace: description 'pid$target:::entry ' matched 3082 probes
dtrace: allowing destructive actions
dtrace: pid 6707 has exited
CPU ID FUNCTION:NAME
4 83475 _r_debug_postinit:entry 0
=20
4 85771 atexit:entry 0
=20
4 86468 __libc_atexit:entry 0
=20
4 86428 exit:entry 0
=20
4 85397 __cxa_thread_call_dtors:entry 0
=20
4 86213 __cxa_finalize:entry 0
=20
4 86213 __cxa_finalize:entry 0
=20
4 83470 _rtld_addr_phdr:entry 0
=20
4 86213 __cxa_finalize:entry 0
=20
4 83470 _rtld_addr_phdr:entry 0
=20
4 84405 _exit:entry 0
This is understandable for vtimestamp, as it does not increase when =
executing DTrace code, but I don't understand walltimestamp's behavior =
here.
I'm running FreeBSD 13.1-RELEASE-p1 here on amd64.
Best,
Mateusz=
--Apple-Mail=_9AFBAE28-2D18-4A94-8979-B2FE01D2F5D1
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D"">Hello all,</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""><br =
class=3D""></span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D"">I'd like to understand why calling chill() =
in a DTrace action block increases the timestampvariable, but not =
vtimestamp and walltimestamp.</span></font></div><div style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D"">Here's an example showing timestamp =
increasing after a call to chill():</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""><br =
class=3D""></span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> # dtrace -w -c =
true -n 'pid$target:::entry {self->t =3D $1; chill(1); printf("%d\n", =
$1 - self->t);}' timestamp</span></font></div><div style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> dtrace: =
description 'pid$target:::entry ' matched 3082 =
probes</span></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: =
0px; border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> dtrace: =
allowing destructive actions</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> dtrace: pid =
6734 has exited</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> CPU =
ID =
FUNCTION:NAME</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
83475 _r_debug_postinit:entry =
11258</span></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: =
0px; border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
85771 =
atexit:entry 2218</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
86468 =
__libc_atexit:entry 491</span></font></div><div style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
86428 =
exit:entry 441</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
85397 __cxa_thread_call_dtors:entry =
441</span></font></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: 0px; =
border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
86213 =
__cxa_finalize:entry 447</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
86213 =
__cxa_finalize:entry 565</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
83470 =
_rtld_addr_phdr:entry 454</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
86213 =
__cxa_finalize:entry 431</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
83470 =
_rtld_addr_phdr:entry 1645</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 5 =
84405 =
_exit:entry 432</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""><br =
class=3D""></span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D"">If we run the same script but use =
walltimestamp (or vtimestamp), we'll see the counter did not =
increase:</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""><br class=3D""></span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""> =
# dtrace -w -c true -n 'pid$target:::entry {self->t =3D $1; =
chill(1); printf("%d\n", $1 - self->t);}' =
walltimestamp</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> dtrace: =
description 'pid$target:::entry ' matched 3082 =
probes</span></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: =
0px; border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> dtrace: =
allowing destructive actions</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> dtrace: pid =
6707 has exited</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> CPU =
ID =
FUNCTION:NAME</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
83475 _r_debug_postinit:entry =
0</span></font></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: 0px; =
border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
85771 =
atexit:entry 0</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
86468 =
__libc_atexit:entry 0</span></font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
86428 =
exit:entry 0</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
85397 __cxa_thread_call_dtors:entry =
0</span></font></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: 0px; =
border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
86213 =
__cxa_finalize:entry 0</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
86213 =
__cxa_finalize:entry 0</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
83470 =
_rtld_addr_phdr:entry 0</span></font></div><div style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
86213 =
__cxa_finalize:entry 0</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
83470 =
_rtld_addr_phdr:entry 0</span></font></div><div style=3D"margin-top:=
0px; margin-right: 0px; margin-bottom: var(--s-prose-spacing); =
margin-left: 0px; padding: 0px; border: 0px; font-stretch: inherit; =
line-height: inherit; vertical-align: baseline; box-sizing: inherit; =
clear: both;" class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> =
</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""> 4 =
84405 =
_exit:entry 0</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""><br =
class=3D""></span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D"">This is understandable for vtimestamp, as =
it does not increase when executing DTrace code, but I don't understand =
walltimestamp's behavior here.</span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" class=3D""><br =
class=3D""></span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D"">I'm running FreeBSD 13.1-RELEASE-p1 here on =
amd64.</span></font></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: var(--s-prose-spacing); margin-left: 0px; padding: =
0px; border: 0px; font-stretch: inherit; line-height: inherit; =
vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" class=3D""><br class=3D""></span></font></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: =
var(--s-prose-spacing); margin-left: 0px; padding: 0px; border: 0px; =
font-stretch: inherit; line-height: inherit; vertical-align: baseline; =
box-sizing: inherit; clear: both;" class=3D""><font color=3D"#232629" =
face=3D"-apple-system, BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, =
Liberation Sans, sans-serif" class=3D""><span style=3D"caret-color: =
rgb(35, 38, 41); font-size: 15px;" =
class=3D"">Best,</span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: var(--s-prose-spacing); margin-left: =
0px; padding: 0px; border: 0px; font-stretch: inherit; line-height: =
inherit; vertical-align: baseline; box-sizing: inherit; clear: both;" =
class=3D""><font color=3D"#232629" face=3D"-apple-system, =
BlinkMacSystemFont, Segoe UI Adjusted, Segoe UI, Liberation Sans, =
sans-serif" class=3D""><span style=3D"caret-color: rgb(35, 38, 41); =
font-size: 15px;" =
class=3D"">Mateusz</span></font></div></div></body></html>=
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