Bugzilla – Bug 113283
Installation of first CD, painfully slow
Last modified: 2007-02-21 14:16:54 UTC
Installing the first CD on my IBM 390E Thinkpad was painfully slow, >8 h (I checked that DMA was enabled, it had main power all the time) The other CDs was much quicker - why?
Forgot: I did also check with vmstat, there was no swapping either.
Please provide YaST2 logs, see: http://www.opensuse.org/index.php/Bug_Reporting_FAQ#YaST
Created attachment 47837 [details] The requested logs
Jiri, please have a look if you can see anything strange.
Hmm, I doubt it was problem of YaST itself...
Still very slow install with 10.0 RC1 (still on the first CD) 2/3 is done with 6.41 h remaining on first CD... no swapping, 60% cpu in sys, 40% in wait with top I can see that much time is spent in hi (hardware interrupt?), probably due to DMA off (since I with the RC1 have to run with "safe settings", see bug #117541) Could it be that with earlier install CD did run without DMA (I do not think so), RC1 tries to but fails... But what changes to CD2, reboot?
Hmm, this sounds more like a kernel problem...
10.1 alpha 4 could be installed without using safe settings - still slow...
You might want to check the DMA mode on that device. While the installation is running, switch to console 2 (Ctrl-Alt-F2) and invoke "hdparm /dev/hdb". I suspect DMA is off (using_dma = 0). That might explain the poor performance.
DMA of on CDROM? Could be it! Will try to test with 10.2 later.
Installed 10.2 same slowness... hdparm is showing that DMA is on. /proc is also showing DMA on. Maybe the disks just are SLOW. hdparm -tT /dev/hda cache 160.15 MB/s buffered disk 8.57 MB/s hdparm -tT /dev/hdc cache 160.9 MB/s buffered disk 1.92 MB/s (ouch) Tried other settings, resulted in slower operation -c1 => half speed, -u1 => 4/5 speed Having data compressed on CD should help a little but it is still much slower than the HD...
Ouch, 1.92MB/s pretty much explains it. Please post /var/log/boot.msg, the result of 'hwinfo --all', 'hdparm -I /dev/hda' and 'hdparm -I /dev/hdc'
Roger, ping.
Closing as invalid. Please reopen when the info can be provided. Thanks.