| From: | Ashley Cambrell <ash(at)freaky-namuh(dot)com> |
|---|---|
| To: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: tweaking MemSet() performance |
| Date: | 2002-08-30 23:31:25 |
| Message-ID: | 3D70004D.9010201@freaky-namuh.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Andrew Sullivan wrote:
>On Thu, Aug 29, 2002 at 01:27:41AM -0400, Neil Conway wrote:
>
>
>>Also, if anyone would like to contribute the results of doing the
>>benchmark on their particular system, that might provide some useful
>>additional data points.
>>
>>
Linux 2.4.18 (preempt) gcc 2.95.4 Dual Althon 1600XP 1Gb DDR
memset() *64 2.999s
MemSet() *64 3.640s
memset() *128 4.211s
MemSet() *128 5.933s
memset() *256 6.624s
MemSet()*256 14.889s
memset() *512 11.182s
MemSet()*512 28.583s
memset() *1024 20.288s
MemSet()*1024 55.853s
memset() *2048 38.513s
MemSet()*2048 1m50.555s
memset()*4096 1m15.010s
MemSet()*4096 3m40.381s
Linux 2.4.16 gcc 2.95.4 Dual Celeron 400 512Mb PC66
memset() *64 15.618s
MemSet() *64 12.864s
memset() *128 24.524s
MemSet() *128 21.852s
memset() *256 53.963s
MemSet() *256 52.012s
memset() *512 1m31.232s
MemSet() *512 1m39.445s
memset() *1024 2m44.609s
MemSet() *1024 3m14.567s
memset() *2048 5m12.630s
MemSet() *2048 6m24.916s
memset() *4096 10m8.183s
MemSet() *4096 12m43.830s
Ashley Cambrell
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