Hello, Trying to find why almost every process that requires IO has near 100% wait times. Even a simple 'cp' command has enormous wait times and doesn't appear at or near the top of the list when running 'top'. This was occurring when writing to a raid, but have tested writing to the system drive and the same thing occurs. Running the 'cp command copying a 19GB file from /tmp/file1 /tmp/file2 will take 50 minutes The same command on another identical system will take 10 minutes. Any ideas on what could be causing this? Top output when running cp; top - 15:22:17 up 13 min, 2 users, load average: 7.28, 2.22, 0.79 Tasks: 162 total, 1 running, 161 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.3%sy, 0.0%ni, 0.3%id, 99.3%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.0%us, 0.0%sy, 0.0%ni, 20.9%id, 79.1%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.3%sy, 0.0%ni, 21.2%id, 78.5%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.3%sy, 0.0%ni, 31.6%id, 68.1%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.0%sy, 0.0%ni, 40.0%id, 60.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 0.0%us, 0.0%sy, 0.0%ni, 37.1%id, 62.9%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 0.0%sy, 0.0%ni, 17.5%id, 82.5%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 0.0%sy, 0.0%ni, 37.6%id, 62.4%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 33020488k total, 5782932k used, 27237556k free, 316k buffers Swap: 8393952k total, 0k used, 8393952k free, 5562388k cached <snip> top - 15:28:05 up 18 min, 2 users, load average: 10.12, 7.39, 3.60 Tasks: 161 total, 1 running, 160 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.7%sy, 0.0%ni, 11.7%id, 87.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.3%sy, 0.0%ni, 39.0%id, 60.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.0%sy, 0.0%ni, 27.1%id, 72.9%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.0%sy, 0.0%ni, 90.0%id, 10.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 0.0%us, 0.0%sy, 0.0%ni, 26.2%id, 73.8%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 0.0%sy, 0.0%ni, 52.8%id, 47.2%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 0.0%sy, 0.0%ni, 53.6%id, 46.4%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 33020488k total, 9431856k used, 23588632k free, 316k buffers Swap: 8393952k total, 0k used, 8393952k free, 9154708k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 20 0 864 336 272 S 0 0.0 0:01.28 init 2 root 15 -5 0 0 0 S 0 0.0 0:00.00 kthreadd 3 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/0 4 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksoftirqd/0 5 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/1 6 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksoftirqd/1 7 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/2 8 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksoftirqd/2 9 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/3 10 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksoftirqd/3 11 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/4 12 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksoftirqd/4 13 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/5 14 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksoftirqd/5 15 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/6 <snip> 'cp' is not showing up, but it is running; root 3915 0.2 0.0 8296 696 pts/0 D+ 15:20 0:02 cp file1 file2 Thank you, James -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org