Cameron Harr wrote:
Vladislav Bolkhovitin wrote:
I ran each test 3 times and took the averages. In order to get a
quick look at performance per run, I added a column in the summary
that sums the IOPs for each test with SRPT thread enabled and then
not enabled. Test 4 seems to give the best results. Here's a brief
summary of that summary with just SRPT thread=0:
Baseline: 356226.39
Test 1: 371217.6533
Test 2: 370553.78
Test 3: 373295.2033
Test 4: 399385.2233
Test 5: 393204.5833
Linux CPU scheduler does really impressive job!
Interesting, will something change with:
1. The latest SVN. It has some changes, which might make a difference.
Sorry for the delay.
This is with SVN rev 673. I don't hit the high I hit before, but at
a 1.8% difference (with test 4), it's statistically noise.
Test 1: 390631.5133
Test 2: 386125.4133
Test 3: 356268.0267
Test 4: 392237.7867
Test 5: 390012.1467
I just ran again, this time with rev 680 and am a little concerned to
see the drop in performance. I verified that debug is not on. I'll try
to start another run on 680 to see if I get similar results.
Test 1:368342.41
Test 2:366787.2067
Test 3:345334.68
Test 4:372684.58
Test 5:372184.8333
I re-compiled and re-ran the tests and numbers are a little better but
performance still seems to have gone down from 673:
Test 1:373751.66
Test 2:371242.6067
Test 3:347988.1467
Test 4:378247.31
Test 5:375616.53
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