Messages in this thread | | | Date | Tue, 24 Sep 2002 09:26:38 +1000 | From | Con Kolivas <> | Subject | [BENCHMARK] Statistical representation of IO load results with contest |
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Thank you all who responded with suggestions on how to get useful data out of the IO load module from contest. These are _new_ results with a sync,swapoff,swapon before conducting just the IO load. I have digested all your suggestions and come up with the following:
n=5 for number of samples
Kernel Mean CI(95%) 2.5.38 411 344-477 2.5.39-gcc32 371 224-519 2.5.38-mm2 95 84-105
The mean is a simple average of the results, and the CI(95%) are the 95% confidence intervals the mean lies between those numbers. These numbers seem to be the most useful for comparison.
Comparing 2.5.38(gcc2.95.3) with 2.5.38(gcc3.2) there is NO significant difference (p 0.56)
Comparing 2.5.38 with 2.5.38-mm2 there is a significant diffence (p<0.001)
After playing with all these it appears I should do the following to contest:
Add sync,swapoff,swapon before each load Perform noload and process_load twice to ensure no abnormal results Perform mem_load 3 times Perform IO_fullmem 5 times (and rename it just IO_load) Drop IO_halfmem (adds no more useful information and just adds time). Do a statistical analysis like the above when posting information.
Comments?
Con
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