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SubjectRe: [ANNOUNCE][RFC] PlugSched-6.2 for 2.6.16-rc1 and 2.6.16-rc1-mm1
On Fri, 20 Jan 2006 08:45:43 +1100
Peter Williams <pwil3058@bigpond.net.au> wrote:

> Modifications have been made to spa_ws to (hopefully) address the issues
> raised by Paolo Ornati recently and a new entitlement based
> interpretation of "nice" scheduler, spa_ebs, which is a cut down version
> of the Zaphod schedulers "eb" mode has been added as this mode of Zaphod
> performed will for Paolo's problem when he tried it at my request.
> Paolo, could you please give these a test drive on your problem?

---- spa_ws: the problem is still here

(sched_fooler)
./a.out 3000 & ./a.out 4307 &

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5573 paolo 34 0 2396 292 228 R 59.0 0.1 0:24.51 a.out
5572 paolo 34 0 2392 288 228 R 40.7 0.1 0:16.94 a.out
5580 paolo 35 0 4948 1468 372 R 0.3 0.3 0:00.04 dd

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5573 paolo 34 0 2396 292 228 R 59.3 0.1 0:59.65 a.out
5572 paolo 33 0 2392 288 228 R 40.3 0.1 0:41.32 a.out
5440 paolo 28 0 86652 21m 15m S 0.3 4.4 0:03.34 konsole
5580 paolo 37 0 4948 1468 372 R 0.3 0.3 0:00.10 dd


(real life - transcode)
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5585 paolo 33 0 115m 18m 2432 S 90.0 3.7 0:38.04 transcode
5599 paolo 37 0 50996 4472 1872 R 9.1 0.9 0:04.03 tcdecode
5610 paolo 37 0 4948 1468 372 R 0.6 0.3 0:00.19 dd


DD test takes ages in both cases.

What exactly have you done to spa_ws?


---- spa_ebs: great! (as expected)

(sched_fooler)
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5418 paolo 34 0 2392 288 228 R 51.4 0.1 1:06.47 a.out
5419 paolo 34 0 2392 288 228 R 43.7 0.1 0:54.60 a.out
5448 paolo 11 0 4952 1468 372 D 3.0 0.3 0:00.12 dd

(transcode)
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5456 paolo 34 0 115m 18m 2432 R 51.9 3.7 0:23.34 transcode
5470 paolo 12 0 51000 4472 1872 S 5.7 0.9 0:02.38 tcdecode
5480 paolo 11 0 4948 1468 372 D 3.5 0.3 0:00.33 dd

Very good DD test performance in both cases.


--
Paolo Ornati
Linux 2.6.16-rc1-plugsched on x86_64
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