Date: Mon, 8 Oct 2001 10:28:45 -0700 (PDT) From: Matt Sykes <matt-sykes@excite.com> To: freebsd-questions@freebsd.org Subject: Re: kernel SMP timer bug persists Message-ID: <21341274.1002562125882.JavaMail.imail@patti.excite.com>
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An update: I tried this patch I found on google archives,
Index: clock.c
===================================================================
RCS file: /usr/cvs/FreeBSD/src/sys/i386/isa/clock.c,v
retrieving revision 1.149.2.3
diff -c -r1.149.2.3 clock.c
*** clock.c 2001/04/18 23:17:41 1.149.2.3
--- clock.c 2001/09/30 14:36:16
***************
*** 202,207 ****
--- 202,211 ----
static void
clkintr(struct clockframe frame)
{
+ #if 1 /* Patch from Tor Egge to keep rtc running */
+ while (rtcin(RTC_INTR) & RTCIR_PERIOD)
+ statclock(&frame);
+ #endif
if (timecounter->tc_get_timecount == i8254_get_timecount) {
disable_intr();
if (i8254_ticked)
and it seems to work, but it does appear to slow down the kernel some
--- a while loop inside clock interrupt (then again, I really don't
know much about it).
Forgot to mention everything runs fine with GENERIC kernel.
I didn't realize excite somehow put tabs at the beginning of each
line. Here is the original message without tabs:
-----
kernel: 4.4-STABLE
motherboard: P2L97-DS (dual PII 300MHZ)
top and ps give 0.00% cpu usage for all processes.
cvsupping didn't help.
LINT config file says
# Notes on APM
# The flags takes the following meaning for apm0:
# 0x0020 Statclock is broken.
# If apm is omitted, some systems require sysctl -w
kern.timecounter.method=1
# for correct timekeeping.
but all combinations of setting apm on/off and
setting timecounter.method on/off do not correct
the problem (I reboot into single-user for
sysctl then reboot again to be sure).
Been talked about in google some, but no resolution
from what I've seen. There is a patch mentioned,
but I am hoping for something less ad hoc;
why wouldn't the patch appear from cvsup?
Please CC my email if you reply.
Thanks.
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