Re: Wierd context-switching issue on Xeon patch for 7.4.1

Dave,

> Yeah, I did some more testing myself, and actually get better numbers
> with increasing spins per delay to 1000, but my suspicion is that it is
> highly dependent on finding the right delay for the processor you are
> on.

Well, it certainly didn't help here:

procs                      memory      swap          io     system         cpu
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
 2  0      0 14870744 123872 1129912    0    0     0     0 1027 187341 48 27
26  0
 2  0      0 14869912 123872 1129912    0    0     0    48 1030 126490 65 18
16  0
 2  0      0 14867032 123872 1129912    0    0     0     0 1021 106046 72 16
12  0
 2  0      0 14869912 123872 1129912    0    0     0     0 1025 90256 76 14 10
0
 2  0      0 14870424 123872 1129912    0    0     0     0 1022 135249 63 22
16  0
 2  0      0 14872664 123872 1129912    0    0     0     0 1023 131111 63 20
17  0
 1  0      0 14871128 123872 1129912    0    0     0    48 1024 155728 57 22
20  0
 2  0      0 14871128 123872 1129912    0    0     0     0 1028 189655 49 29
22  0
 2  0      0 14871064 123872 1129912    0    0     0     0 1018 190744 48 29
23  0
 2  0      0 14871064 123872 1129912    0    0     0     0 1027 186812 51 26
23  0


--
-Josh Berkus
 Aglio Database Solutions
 San Francisco