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From BRA Lento <glico...@gmail.com>
Subject I/O Wait only in one CPU
Date Sat, 06 Apr 2013 23:41:40 GMT
Hi all,

   First of all, thanks to all developers that help in development of this
powerfull proxy software.
   My scenario is: 2xCPU ( Intel(R) Xeon(R) CPU X5650 ) with 98GB RAM and
PERC5 with 14 ( 2TB) discs, and Intel 10G card.
   The software version is 3.3.2 ( master branch ), and it's performing
really well ( 1.7 Gbps ) with 50~60% idle.
   I'm running TS in forward proxy mode, but I have one question about how
TS performs the "load balacing" (proxy.config.cache.threads_per_disk) with
2x physical CPUs,
   i guess that TS was doing the right thing but PERC5 is doing the wrong
spread. My question is: Is there a way to force the I/O spreading against
second CPU ?

   My proxy.config.cache.threads_per_disk is 32.

   Below are my TOP statistics.
   Thanks in advance.

 Tasks: 196 total,   1 running, 195 sleeping,   0 stopped,   0 zombie
Cpu0  :  2.0%us,  5.1%sy,  0.0%ni, 55.6%id, 36.4%wa,  0.0%hi,  1.0%si,
 0.0%st
Cpu1  :  2.1%us,  4.1%sy,  0.0%ni, 54.6%id, 38.1%wa,  0.0%hi,  1.0%si,
 0.0%st
Cpu2  :  2.0%us,  4.0%sy,  0.0%ni, 70.7%id, 23.2%wa,  0.0%hi,  0.0%si,
 0.0%st
Cpu3  :  0.0%us,  2.1%sy,  0.0%ni, 62.5%id, 35.4%wa,  0.0%hi,  0.0%si,
 0.0%st
Cpu4  :  2.0%us,  3.0%sy,  0.0%ni, 72.7%id, 22.2%wa,  0.0%hi,  0.0%si,
 0.0%st
Cpu5  :  2.0%us,  5.0%sy,  0.0%ni, 49.5%id, 43.6%wa,  0.0%hi,  0.0%si,
 0.0%st
Cpu6  :  0.0%us,  3.1%sy,  0.0%ni, 54.6%id, 42.3%wa,  0.0%hi,  0.0%si,
 0.0%st
Cpu7  :  0.0%us,  4.0%sy,  0.0%ni, 66.7%id, 29.3%wa,  0.0%hi,  0.0%si,
 0.0%st
Cpu8  :  4.0%us,  5.1%sy,  0.0%ni, 61.6%id, 19.2%wa,  0.0%hi, 10.1%si,
 0.0%st
Cpu9  :  3.1%us,  5.2%sy,  0.0%ni, 66.0%id, 18.6%wa,  0.0%hi,  7.2%si,
 0.0%st
Cpu10 :  6.1%us,  6.1%sy,  0.0%ni, 67.3%id, 12.2%wa,  0.0%hi,  8.2%si,
 0.0%st
Cpu11 :  6.2%us,  4.1%sy,  0.0%ni, 61.9%id, 15.5%wa,  0.0%hi, 12.4%si,
 0.0%st
Cpu12 :  4.2%us,  3.1%sy,  0.0%ni, 80.2%id,  5.2%wa,  0.0%hi,  7.3%si,
 0.0%st
Cpu13 :  5.3%us,  3.2%sy,  0.0%ni, 77.9%id,  4.2%wa,  0.0%hi,  9.5%si,
 0.0%st
Cpu14 :  5.1%us,  3.1%sy,  0.0%ni, 70.4%id, 11.2%wa,  0.0%hi, 10.2%si,
 0.0%st
Cpu15 :  4.1%us,  5.1%sy,  0.0%ni, 79.6%id,  2.0%wa,  0.0%hi,  9.2%si,
 0.0%st
Cpu16 :  4.1%us,  3.1%sy,  0.0%ni, 81.4%id,  3.1%wa,  0.0%hi,  8.2%si,
 0.0%st
Cpu17 :  8.1%us,  4.0%sy,  0.0%ni, 73.7%id,  7.1%wa,  0.0%hi,  7.1%si,
 0.0%st
Cpu18 :  5.1%us,  4.1%sy,  0.0%ni, 76.5%id,  3.1%wa,  0.0%hi, 11.2%si,
 0.0%st
Cpu19 :  5.1%us,  4.1%sy,  0.0%ni, 75.5%id,  6.1%wa,  0.0%hi,  9.2%si,
 0.0%st
Cpu20 :  2.9%us,  4.9%sy,  0.0%ni, 76.5%id,  3.9%wa,  0.0%hi, 11.8%si,
 0.0%st
Cpu21 :  5.8%us,  4.9%sy,  0.0%ni, 64.1%id, 10.7%wa,  0.0%hi, 14.6%si,
 0.0%st
Cpu22 :  7.9%us,  4.0%sy,  0.0%ni, 68.3%id,  5.9%wa,  0.0%hi, 13.9%si,
 0.0%st
Cpu23 :  7.1%us,  2.0%sy,  0.0%ni, 68.7%id, 11.1%wa,  0.0%hi, 11.1%si,
 0.0%st

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