Re: 2.6.21-rc3-mm1 RSDL results

Con Kolivas
2007-03-13T20:27:03Z

On Wednesday 14 March 2007 05:21, Mark Lord wrote:
> Con Kolivas wrote:
> > Can you try the new version of RSDL. Assuming it doesn't oops on you it
> > has some accounting bugfixes which may have been biting you.
>
> Retesting today with 2.6.21-rc3-git7 + 2.6.21-rc3-sched-rsdl-0.30.patch.
>
> Still not pleasant to use the GUI with a kernel build (-j1 or -j2)
> happening unless the build is manually "nice'd".
>
> Also, accounting looks weird in top(1).
>
> With a 100% busy machine, top will show something like this :
> > top - 14:20:11 up 10:22, 1 user, load average: 2.65, 2.80, 2.18
> > Tasks: 134 total, 4 running, 128 sleeping, 0 stopped, 2 zombie
> > Cpu(s): 68.7% us, 6.7% sy, 24.7% ni, 0.0% id, 0.0% wa, 0.0% hi, 0.0%
> > si Mem: 2076964k total, 2002560k used, 74404k free, 148924k
> > buffers Swap: 2409740k total, 244k used, 2409496k free, 1448876k
> > cached
> >
> > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> > 1824 root 36 10 11748 7244 1936 R 4.0 0.3 0:00.12 cc1
> > 1845 root 31 0 8080 5272 1412 R 1.7 0.3 0:00.05 cc1
> > 4139 root 20 0 176m 35m 6860 S 1.3 1.7 18:59.35 Xorg
> > 29381 root 20 0 33712 16m 12m R 1.0 0.8 0:27.24 konsole
> > 3 root 20 0 0 0 0 S 0.3 0.0 0:00.49 events/0
> > 1529 root 20 0 2556 1460 752 S 0.3 0.1 0:00.05 make
> > 14623 root 20 0 2200 1144 860 R 0.3 0.1 0:00.89 top
> > 1 root 20 0 1568 532 464 S 0.0 0.0 0:00.22 init
> > 2 root 39 19 0 0 0 S 0.0 0.0 0:00.01 ksoftirqd/0
> > 4 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper
> > 5 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthread
>
> Mmm.. I wonder where all of that 100% CPU went to.. the busiest tasks
> are only showing up as 4.0% and 1.7% (when in fact they are using near
> 100%).

Nothing ever looks like it stays running for very long. That would be enough
to account for this sort of top picture. What HZ are you running? Do you
usually run two makes at different nice levels?

Thanks.

--
-ck