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On Sat, 2005-07-23 at 16:48 +0200, Simon Strandman wrote: |
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> With the glibc 2.3.5 currently in gentoo I get: |
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> isidor ~ # ./memcpy 2200 1000 1048576 |
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> Memory to memory copy rate = 1291.600098 MBytes / sec. Block size = 1048576. |
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> |
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> But with glibc 2.3.5 + amd64 optimized strings I get: |
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> isidor ~ # ./memcpy 2200 1000 1048576 |
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> Memory to memory copy rate = 2389.321777 MBytes / sec. Block size = 1048576. |
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> |
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> That's an improvement of over 1000mb/s! Suse 9.3 also gives about |
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> 2300mb/s out of the box. |
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|
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Hmm, I don't see much difference here. |
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|
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before: |
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allan@aw ~ $ ./a.out 2420 1000 1048576 |
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Memory to memory copy rate = 1110.198486 MBytes / sec. Block size = |
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1048576. |
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|
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after: |
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aw allan # ./a.out 2420 1000 1048576 |
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Memory to memory copy rate = 1154.922974 MBytes / sec. Block size = |
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1048576. |
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|
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Allan |
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|
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-- |
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