linux-kernel - Re: Scalability requirements for sysv ipc

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Date:	Sat, 22 Mar 2008 20:35:04 +0100
From:	Mike Galbraith <efault@....de>
To:	Manfred Spraul <manfred@...orfullife.com>
Cc:	paulmck@...ux.vnet.ibm.com, Nadia Derbey <Nadia.Derbey@...l.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Scalability requirements for sysv ipc


On Sat, 2008-03-22 at 15:22 +0100, Manfred Spraul wrote:
> Mike Galbraith wrote:
> > Total: 4691827                                Total: 3942000
> >   
> Thanks. Unfortunately the test was buggy, it bound the tasks to the 
> wrong cpu :-(
> Could you run it again? Actually 1 cpu and 4 cpus are probably enough.

Sure.  (ran as before, hopefully no transcription errors)

2.6.22.18-cfs-v24-smp                         2.6.24.3-smp
Result matrix: (psem)
  Thread   0:  2395778       1:  2395779         Thread   0:  2054990       1:  2054992
Total: 4791557                                Total: 4009069
Result matrix: (pmsg)
  Thread   0:  2317014       1:  2317015         Thread   0:  1959099       1:  1959099
Total: 4634029                                Total: 3918198


Result matrix:
  Thread   0:  2340716       2:  2340716         Thread   0:  1890292       2:  1890293
  Thread   1:  2361052       3:  2361052         Thread   1:  1899031       3:  1899032
Total: 9403536                                 Total: 7578648
Result matrix:
  Thread   0:  1429567       2:  1429567         Thread   0:  1295071       2:  1295071
  Thread   1:  1429267       3:  1429268         Thread   1:  1289253       3:  1289254
Total: 5717669                                 Total: 5168649 


Result matrix:
  Thread   0:  2263039       3:  2263039         Thread   0:  1351208       3:  1351209
  Thread   1:  2265120       4:  2265121         Thread   1:  1351300       4:  1351300
  Thread   2:  2263642       5:  2263642         Thread   2:  1319512       5:  1319512
Total: 13583603                                Total: 8044041
Result matrix:
  Thread   0:   483934       3:   483934         Thread   0:   514766       3:   514767
  Thread   1:   239714       4:   239715         Thread   1:   252764       4:   252765
  Thread   2:   270216       5:   270216         Thread   2:   253216       5:   253217
Total: 1987729                                 Total: 2041495


Result matrix:
  Thread   0:  2260038       4:  2260039         Thread   0:   642235       4:   642236
  Thread   1:  2262748       5:  2262749         Thread   1:   642742       5:   642743
  Thread   2:  2271236       6:  2271237         Thread   2:   640281       6:   640282
  Thread   3:  2257651       7:  2257652         Thread   3:   641931       7:   641931
Total: 18103350                                Total: 5134381
Result matrix:
  Thread   0:   382811       4:   382811         Thread   0:   342297       4:   342297
  Thread   1:   382801       5:   382802         Thread   1:   342309       5:   342310
  Thread   2:   376620       6:   376621         Thread   2:   343857       6:   343857
  Thread   3:   376559       7:   376559         Thread   3:   343836       7:   343836
Total: 3037584                                 Total: 2744599


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