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Subject: Re: [PATCH 2.5.47] NUMA scheduler (1/2)
From: Michael Hohnbaum <hohnbaum@us.ibm.com>
To: Erich Focht <efocht@ess.nec.de>
Cc: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>, Robert Love <rml@tech9.net>,
       Anton Blanchard <anton@samba.org>, Ingo Molnar <mingo@elte.hu>,
       Stephen Hemminger <shemminger@osdl.org>,
       linux-kernel <linux-kernel@vger.kernel.org>
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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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