Greetings,
I'm tracking i386 releng_7 on kind of old single CPU machine and I see
very annoying problem.
top (-S) is not reporting things properly:
last pid: 20337; load averages: 0.43, 0.11,
0.04
up
0+13:20:07 14:37:44
123 processes: 3 running, 102 sleeping, 18 waiting
CPU: 75.0% user, 0.0% nice, 25.0% system, 0.0% interrupt, 0.0% idle
Mem: 108M Active, 702M Inact, 232M Wired, 1212K Cache, 112M Buf, 1958M
Free
Swap: 4096M Total, 4096M Free
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU
COMMAND
10 root 1 171 ki31 0K 8K RUN 769:35 56.15%
idle: cpu0
19375 root 1 8 0 3464K 1616K wait 0:00 0.20% sh
13 root 1 -44 - 0K 8K WAIT 7:35 0.00%
swi1: net
33 root 1 -80 - 0K 8K WAIT 1:57 0.00%
irq18: vgapci0
11 root 1 -32 - 0K 8K WAIT 0:59 0.00%
swi4: clock sio
46 root 1 20 - 0K 8K syncer 0:46 0.00%
syncer
1066 user 1 44 0 32508K 26368K select 0:27 0.00%
kdeinit
977 root 1 44 0 71956K 50668K select 0:23 0.00%
Xorg
As you can see the CPU is 0% idle but the idle process is accounted
56.15%
It doesn't matter how the load is created - web browser, X,
compilation or something else.
Top just reports that only idle process is eating CPU.
Here is part of dmesg info:
FreeBSD 7.2-STABLE #10: Sat May 16 09:05:31 EEST 2009
r...@cheffo.freebsd-bg.org:/usr/obj/usr/src/sys/CORE
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) 64 Processor 3200+ (2200.22-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0x20ff0 Stepping = 0
Features
=
0x78bfbff
<
FPU
,VME
,DE
,PSE
,TSC
,MSR
,PAE
,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
Features2=0x1<SSE3>
AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow!+,3DNow!>
AMD Features2=0x1<LAHF>
real memory = 3221159936 (3071 MB)
avail memory = 3140956160 (2995 MB)
I'm using in my kernel:
options SCHED_ULE # ULE scheduler
options SMP # tried without it - no difference
options HWPMC_HOOKS
device hwpmc
There are other changes from GENERIC, but they are removed/added
drivers and I'm sure the problem is not there.
Any idea why top does not work properly?
--
Best Wishes,
Stefan Lambrev
ICQ# 24134177
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