On Sat, 16 Jun 2007, Balbir Singh wrote:
malc wrote:
On Fri, 15 Jun 2007, Balbir Singh wrote:
malc wrote:
On Thu, 14 Jun 2007, Ingo Molnar wrote:
[..snip..]
Now integral load matches the one obtained via the "accurate" method.
However the report for individual cores are of by around 20% percent.
I think I missed some of the context, is the accounting of individual
tasks
or cpustat values off by 20%? I'll try and reproduce this problem.
Neither actually, the individual core idle times reported via `/proc/stat'
are off by 20 percent, one over estimates and the other under estimates
and the sum is right on the mark.
Interesting, the idle time accounting (done from account_system_time())
has not changed. Has your .config changed? Could you please send
it across. I've downloaded apc and I am trying to reproduce your problem.
http://www.boblycat.org/~malc/apc/cfs/ has config for 2.6.21 an the
diff against 2.6.21.4-cfs-v16.
I updated hog (can be found in the above directory) to call setitimer
with a bit saner values (apprantly tickless has profound effect on
itimers interface). While fooling around with this version of hog
on 2.6.21.4-cfs-v16 i stumbled upon rather strange behavior (the
screenshot is also at the address above, note that kernel was booted
with maxcpus=1)
[..snip..]
--
vale
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
