Thanks for the link. The drive is an IBM Travelstar 60gb 5400 rpm hard drive. I booted into single user mode and did some testing to compare to what I was seeing at runlevel 5. (cr = cached reads timing; br = buffered reads timing) The numbers represent the highest MB/sec from 4 consecutive executions of hdparm -tT hdparm -c0 -d0 -u0 /dev/hda Single user: cr: 704 br: 2.89 RL 5 cr: 698 br: 2.46 hdparm -c1 -d1 -u1 /dev/hda Single User: cr: 724 br: 21.15 RL 5 cr: 709 MB/sec br: 16.97 MB/sec So, I guess at 16.97 MB/sec in runlevel 5, I'm seeing about the best I can expect from this drive. At least with more or less standard hdparm settings. So, I'm getting sufficient performance from the drives now, but startup still takes about 4 minutes from entering my password. If I run hdparm -tT immediately after login, I see buffered reads around 2.5 MB/sec! Top shows load averages around 2 with the CPU showing 90+% waiting. After a short while, the system drops to about 98% idle, but my disk timings do not immediately improve. Puzzling! Glenn On Fri, 08 Oct 2004 08:34:54 -0400, Ted Kaczmarek <tedkaz@xxxxxxxxxxxxx> wrote: > Did enabling dma speed it up? > > http://www.justlinux.com/nhf/Hardware/Hard_Drive_Speed_Tweak_for_Linux.html > > Should have pasted this before. > > I get consistent 36.00 MB/sec on my Sager, but it has 7200 rpm drive and > this is with FC2 running 2.6.8-1.521. > > Ted > > > > On Fri, 2004-10-08 at 13:01 +0100, VJ wrote: > > But he set DMA to 1 ( -d1 ). > > VJ > > > > On Fri, October 8, 2004 1:00 pm, Ted Kaczmarek said: > > > > > > > > > On Fri, 2004-10-08 at 07:29 -0400, Glenn Stauffer wrote: > > >> I installed Core 3 test 2 on a Dell Precision M50 laptop. The > > >> performance is abysmal. > > >> > > >> >From the login screen to the desktop takes almost 4 minutes. Disk > > >> performance seems to have a lot to do with this. With an hdparm line > > >> like: > > >> > > >> hdparm -d1 -c1 -u1 /dev/hda > > >> > > >> I see variable results. with repeated cycles of hdparm -t, I'll see > > >> anything from 570 kB/sec to 10 MB/sec. Nothing higher. Other Dell > > >> laptop users report read rates closer to 20 MB/sec from what I can > > >> glean from Internet posts. > > >> > > >> Any good resources for tuning a Fedora system? Any other advice? > > >> > > >> Thanks, Glenn > > > > > > > > > dma setting may be your problem. > > > > > > Ted > > > > > > -- > > > fedora-list mailing list > > > fedora-list@xxxxxxxxxx > > > To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list > > > > > > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list >
