Rajagopal Swaminathan wrote: > This list never ceases to amaze me with very very quick and educating responses > > > John R Pierce <pierce at ...> writes: > > >> Rajagopal Swaminathan wrote: >> >> depends on your disk controllers. whats `iostat -x 5` say the IO on >> hdb3 and hda3 is doing? (ignore the first sample, its average since >> > > avg-cpu: %user %nice %system %iowait %steal %idle > 0.13 0.00 31.98 0.00 0.00 67.89 > > Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz > await svctm %util > hda 26.40 0.40 4.20 2.20 3660.80 20.80 575.25 2.74 > 386.97 148.44 95.00 > hdb 0.00 24.80 0.00 6.60 0.00 3988.80 604.36 1.43 > 217.45 143.24 94.54 > ... > > I won't claim I understand everyone of the above columns. > I am in the process of reading man pages. > the import wants there are rsec/s and wsec/s which are read/write sectors/sec, and %util which is %utilization. your disks are 100% busy, and one is reading 3600 sector/sec which is 1.8MB/sec and the other is writing that much. there's no way in h*** a SATA disk should be that slow, my guess is the SATA controller is runnign in IDE PIO mode. you also have 32% CPU utilization, which is real high for just doing this.