Re: [PATCH 2.5.47] NUMA scheduler (1/2)

From: Michael Hohnbaum (hohnbaum@us.ibm.com)
Date: Mon Nov 11 2002 - 19:24:14 EST

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In reply to: Erich Focht: "[PATCH 2.5.47] NUMA scheduler (1/2)"
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On Mon, 2002-11-11 at 07:13, Erich Focht wrote:
> Hi,
>
> here come the NUMA scheduler patches for 2.5.47 which emerged from
> Michael's and my work on NUMA schedulers. As usual in two parts:
>
> 01-numa-sched-core-2.5.47-21.patch: core NUMA scheduler infrastructure
> providing a node aware load_balancer
>
> 02-numa-sched-ilb-2.5.47-21.patch: initial load balancing, selects
> least loaded node & CPU at exec()

Built, booted, tested on NUMAQ. Results:

$ reportbench sched47 stock47
Kernbench:
                             Elapsed User System CPU
                 sched47 20.39s 191.824s 50.358s 1187.6%
                 stock47 20.608s 194.536s 53s 1201.4%

Schedbench 4:
                             Elapsed TotalUser TotalSys AvgUser
                 sched47 22.45 34.79 89.84 0.69
                 stock47 29.05 42.58 116.25 0.94

Schedbench 8:
                             Elapsed TotalUser TotalSys AvgUser
                 sched47 39.58 60.98 316.72 1.78
                 stock47 43.30 56.84 346.49 2.44

Schedbench 16:
                             Elapsed TotalUser TotalSys AvgUser
                 sched47 58.83 72.58 941.56 5.30
                 stock47 60.76 82.05 972.31 4.82

Schedbench 32:
                             Elapsed TotalUser TotalSys AvgUser
                 sched47 55.87 122.75 1788.32 11.02
                 stock47 77.93 179.68 2494.06 11.35

Schedbench 64:
                             Elapsed TotalUser TotalSys AvgUser
                 sched47 85.77 360.49 5490.28 21.13
                 stock47 94.31 398.85 6036.95 23.47

Michael

> An up-to-date BK tree containing the whole NUMA scheduler can be found
> at bk://numa-ef.bkbits.net/numa-sched .
>
> Regards,
> Erich

Michael Hohnbaum 503-578-5486 hohnbaum@us.ibm.com T/L 775-5486

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