Re: [mythtv-users] Software RAID5 no improvement to transfer speed...
Hi, >> 1 prerecorded HD show. The cpu usage hasn't gone higher than 96% so >> I don't >> think its a cpu usage problem. >> > It sure might be, whatever tool you are using to measure CPU load > (top?) is averaging over some period of time, if the average is 96% > then you are almost certainly hitting peaks of 100%+. try running vmstat 1 100 you will notice the following: us: percentage of total processor time consumed by user-space sy: percentage of total processor time consumed by the kernel wa: percentage of total processor time spent in I/O wait id: percentage of total processor time spent idle high us/sy points to not enough CPU, high wa points to IO wait time --> disks cannot follow the load hope this helps tata, Ramses -- >From Winnie-the-Pooh's Little Book of Wisdom: Spare Time: While you wonder what to do, sit down and sing a song. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Software RAID5 no improvement to transfer speed...
On Jan 12, 2006, at 7:39 AM, Steve Adeff wrote: > well I got my software RAID5 up and running. 3 drives, no spares. > but I still get playback stuttering while recording 2 HD channels > and playing > 1 prerecorded HD show. The cpu usage hasn't gone higher than 96% so > I don't > think its a cpu usage problem. > I do have all three drives connected to the same onboard SATA150 > controller > though I don't know if this could be a problem? > It sure might be, whatever tool you are using to measure CPU load (top?) is averaging over some period of time, if the average is 96% then you are almost certainly hitting peaks of 100%+. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Software RAID5 no improvement to transfer speed...
well I got my software RAID5 up and running. 3 drives, no spares. but I still get playback stuttering while recording 2 HD channels and playing 1 prerecorded HD show. The cpu usage hasn't gone higher than 96% so I don't think its a cpu usage problem. I do have all three drives connected to the same onboard SATA150 controller though I don't know if this could be a problem? -- Steve ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
