Hi all!

I have a problem with hardware RAID 1 with PERC H200 controller. There are two SAS HDD size of 1 TB. After OS installation (SLES 11) begins long delays (I/O waits) on the CPU. The system is not already loaded, and I/O waits at the CPU reach 90%. Already reinitialize the RAID array. It is to no avail. I hope for you help.

There is top screens:

Tasks: 208 total, 1 running, 207 sleeping, 0 stopped, 0 zombie

Cpu0 : 8.7%us, 2.2%sy, 0.0%ni, 0.0%id, 87.9%wa, 0.0%hi, 1.2%si, 0.0%st

Cpu1 : 5.5%us, 1.9%sy, 0.6%ni, 10.1%id, 80.5%wa, 0.0%hi, 1.3%si, 0.0%st

Cpu2 : 3.6%us, 1.0%sy, 0.0%ni, 95.0%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st

Cpu3 : 21.9%us, 6.2%sy, 0.3%ni, 58.2%id, 10.1%wa, 2.3%hi, 1.0%si, 0.0%st

Mem: 8039724k total, 5155380k used, 2884344k free, 81024k buffers

Swap: 2104472k total, 0k used, 2104472k free, 4859664k cached

Sorry for my English. Thanks...

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