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Posted to users@trafficserver.apache.org by BRA Lento <gl...@gmail.com> on 2013/04/07 01:41:40 UTC
I/O Wait only in one CPU
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