Please keep this exchange on the list. On Thursday 06 December 2007 07:42, Kain, Becki (B.) wrote: > What do you recommend besides iostat? When I run it, i get this: > > avg-cpu: %user %nice %sys %iowait %idle > 35.08 0.00 64.92 0.00 0.00 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read > Blk_wrtn fd0 0.00 0.00 0.00 0 > 0 sda 3.00 0.00 0.00 0 > 0 > > avg-cpu: %user %nice %sys %iowait %idle > 35.96 0.00 64.04 0.00 0.00 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read > Blk_wrtn fd0 0.00 0.00 0.00 0 > 0 sda 21.39 0.00 0.00 0 > 0 > > > Which isn't showing an i/o bottleneck, unless I'm reading this wrong.
Actually, it looks suspicious in itself as a display of current activity. 21 transfers per second on sda with a data rate and total transferred block counts of exactly zero? I've never seen that and it seems nonsensical. Have you checked your disks SMART health status? Are these IDE (not SATA) drives? Have you ensured that their DMA is enabled? You can use "hdparm" to ascertain and control IDE drive DMA status. Of course, running in PIO (programmed I/O, the opposite of DMA) makes things very slow, but does not cause transfers to do nothing, so this would not explain your iostat numbers alone. > Thank you for your help Randall Schulz -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
