version 1.1, 2010/07/10 23:02:32
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version 1.2, 2010/07/10 23:25:33
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Line 54 This machine uses HT - so technically sp
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Line 54 This machine uses HT - so technically sp
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## PAE ## |
## PAE ## |
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[[build-pae.png]] |
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[[hackbench-pae.png]] |
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[[sysbench-pae.png]] |
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Overall, PAE affects memory performance by a 15-20% ratio; this is particularly noticeable with sysbench and hackbench, where bandwidth and thread/process creation time are all slower. |
Overall, PAE affects memory performance by a 15-20% ratio; this is particularly noticeable with sysbench and hackbench, where bandwidth and thread/process creation time are all slower. |
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Userland remains rather unaffected, with differences in the 5% range; build.sh -j4 runs approximately 5% slower under PAE, both for native and Xen case. |
Userland remains rather unaffected, with differences in the 5% range; build.sh -j4 runs approximately 5% slower under PAE, both for native and Xen case. |
Line 64 Notice that, in a MP context, Xen stays
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Line 68 Notice that, in a MP context, Xen stays
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## Xen ballooning ## |
## Xen ballooning ## |
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[[build-balloon.png]] |
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[[hackbench-balloon.png]] |
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[[sysbench-balloon.png]] |
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In essence, there is not much to say. Results are all below the 5% margin, adding the balloon thread did not affect performance or process creation/scheduling drastically. It is all noise. The timeout delay added by cherry@ seems to be reasonable (can be revisited later, but does not seem to be critical). |
In essence, there is not much to say. Results are all below the 5% margin, adding the balloon thread did not affect performance or process creation/scheduling drastically. It is all noise. The timeout delay added by cherry@ seems to be reasonable (can be revisited later, but does not seem to be critical). |