Date: Sun, 1 Aug 1999 13:27:51 +0930 From: Greg Lehey <grog@lemis.com> To: FreeBSD current users <FreeBSD-current@FreeBSD.ORG>, FreeBSD Committers <cvs-committers@FreeBSD.ORG> Subject: Recent -CURRENT doesn't show process times on some hardware Message-ID: <19990801132751.S64532@freebie.lemis.com>
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For about a week now, I've been tracking -CURRENT on two machines,
panic and mojave, building world almost daily. On mojave, a number of
process timing functions have not been working at all during this
time, though panic has no problems. For example:
$ cat loop.c
main ()
{
while (1);
}
$ make loop
cc loop.c -o loop
$ loop&
[1] 54987
$ ps up54987
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
grog 54987 0.0 0.2 756 224 p2 R 1:20PM 0:28.98 loop
$ ps up54987
In other words, though the process is looping in user state, ps shows
no CPU usage, though the process time is being counted relatively
correctly.
Also,
$ time loop
Terminated [killed from another xterm]
real 0m15.136s
user 0m0.000s
sys 0m15.040s
Here the time has been attributed to the system, though it's all in
user space.
top shows:
CPU states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 0.0% idle
Mem: 47M Active, 8284K Inact, 30M Wired, 6812K Cache, 9530K Buf, 576K Free
Swap: 256M Total, 192K Used, 256M Free
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
54999 grog 28 0 756K 224K RUN 0:15 0.00% 0.00% loop
The CPU timing information is always 0.0% for everything.
vmstat shows:
r b w avm fre flt re pi po fr sr wd0 wc0 in sy cs us sy id
1 1 0 9228 7284 112 0 0 0 133 11 0 0 131 230 23 0 0 0
1 1 0 9228 7280 4 0 0 0 0 0 0 0 106 43 24 0 0 0
What makes this all the more puzzling is that it happens only on one
machine. Hint: it's a laptop (Dell Latitude CPi). panic is a normal
Pentium machine of no particular lineage. Does this ring a bell with
anybody?
Greg
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