Date: Fri, 13 Mar 2015 11:51:27 -0400 From: suresh gumpula <gsuryacse7k@gmail.com> To: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Memory foot print on BSD 9.1 Message-ID: <CAJOqHmitA0mFBjM0vqtYxqoep4fymtpcxr%2BwBhKsCv6Z5sTGJg@mail.gmail.com>
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Hello VM experts,
I am trying to figure out what has been changed from 8.1 to 9.1 which
results more memory footprint on all processes. looking at one of the big
processes we have on a idle machine,
its about 35M resident size increase. Looking at map entries by procstat
-v shows me that two libraries , one is our internal library(libmgwd) and
other one is boost consume more now.
There are no changes made with respect to process, just comparing after the
upgrade to 9.1.
Is there any knows things with respect VM has been changed and could result
in more resident memory ? Can somebody please help on this to know what
exactly causing this behaviour ?
Details below.
Thank you!
8.1
=E2=80=94
% sudo procstat -v `pgrep mgwd`
PID START END PRT RES PRES REF SHD FL TP
PATH
2213 0x800a46000 0x807b41000 r-x 18209 22827 2 1 CN vn
/usr/lib/libmgwd.so.1
2213 0x807d40000 0x808a90000 rw- 3019 0 1 0 C- vn
/usr/lib/libmgwd.so.1
2213 0x833406000 0x833407000 rw- 1 0 1 0 CN vn
/usr/lib/libboost_atomic.so.1.56.0
2213 0x833600000 0x835600000 rw- 8134 0 1 0 C- df
2213 0x835600000 0x835800000 rw- 20 0 1 0 -- df
2213 0x7ffff6f99000 0x7ffff6fb9000 rw- 1 0 1 0 -- df
2213 0x7ffff719a000 0x7ffff71ba000 rw- 1 0 1 0 -- df
2213 0x7ffff739b000 0x7ffff73bb000 rw- 12 0 1 0 -- df
9.1
=E2=80=94=E2=80=94
% sudo procstat -v `pgrep mgwd`
PID START END PRT RES PRES REF SHD FL TP
PATH
2158 0x800a1c000 0x807c87000 r-x 23328 26760 2 1 CN-- vn
/usr/lib/libmgwd.so.1
2158 0x807e87000 0x808bd4000 rw- 3283 0 1 0 C--- vn
/usr/lib/libmgwd.so.1
2158 0x8336d7000 0x8336d8000 rw- 1 0 1 0 CN-- vn
/usr/lib/libboost_atomic.so.1.56.0
2158 0x8336d8000 0x8342cf000 rw- 2105 0 1 0 C-S- df
2158 0x8342cf000 0x8342ea000 rw- 27 0 1 0 C--- df
2158 0x8342ea000 0x8342f3000 rw- 7 0 1 0 ---- df
2158 0x834400000 0x834600000 rw- 511 0 1 0 C--- df
2158 0x834600000 0x836400000 rw- 7375 0 1 0 C--- df
2158 0x836400000 0x836600000 rw- 228 0 1 0 ---- df
BSD 8.1
=3D=3D=3D=3D=3D=3D
last pid: 5116; load averages: 5.22, 4.29, 2.34 up 0+00:10:15
17:34:00
352 processes: 1 running, 350 sleeping, 1 zombie
CPU: 0.2% user, 0.0% nice, 4.5% system, 1.7% interrupt, 93.5% idle
Mem: 297M Active, 648M Inact, 139M Wired, 6948K Cache, 7520K Buf, 1862M Fre=
e
Swap: 1536M Total, 1536M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
2219 root 68 96 0 859M 226M ucond 1 0:24 0.00% mgwd
BSD 9.1
=E2=80=94=E2=80=94=E2=80=94
last pid: 5344; load averages: 5.17, 4.47, 2.79 up 0+00:26:12
17:22:57
39 processes: 1 running, 37 sleeping, 1 zombie
CPU: 0.2% user, 0.0% nice, 2.2% system, 0.6% interrupt, 97.0% idle
Mem: 338M Active, 669M Inact, 147M Wired, 392K Cache, 7488K Buf, 1799M Free
Swap: 1536M Total, 1536M Fre
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
2158 root 68 40 0 874M 262M uwait 1 0:23 0.00% mgwd
=3D=3D=3D=3D=3D=3D=3D=3D
% ldd /usr/lib/libmgwd.so.1
/usr/lib/libmgwd.so.1:
% ldd /usr/lib/libboost_atomic.so.1.56.0
/usr/lib/libboost_atomic.so.1.56.0:
librt.so.1 =3D> /usr/lib/librt.so.1 (0x801002000)
libthr.so.3 =3D> /lib/libthr.so.3 (0x801207000)
;;image size comparison on different builds shows TEXT size of a libray
went up by ~1.5M
text data bss dec hex filename
118484184 13956880 5724944 138166008 83c3ef8
devN_150110_0500/mgmtgateway/bedrock/internal/x86_64/ulibso/libmgwd.so.1
119973051 13946008 5724944 139644003 852cc63
devN_150110_1035/mgmtgateway/bedrock/internal/x86_64/ulibso/libmgwd.so.1
BSD 9.1
=E2=80=94=E2=80=94
% size /sbin/mgwd
text data bss dec hex filename
2106422 42388 371584 2520394 26754a /sbin/mgwd
% size /usr/lib/libboost_atomic.so.1.56.0
text data bss dec hex filename
1309 264 2624 4197 1065 /usr/lib/libboost_atomic.so.1.56.0
BSd 8.1
=E2=80=94=E2=80=94=E2=80=94
% size /sbin/mgwd
text data bss dec hex filename
2091457 42364 371520 2505341 263a7d /sbin/mgwd
% size /usr/lib/libboost_atomic.so.1.56.0
text data bss dec hex filename
1309 264 2624 4197 1065 /usr/lib/libboost_atomic.so.1.56.0
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