Re: [expert] 3 Hard-drive problems
On Saturday 16 June 2001 07:23, Jesper Holmberg wrote: Below follow three problems I've had since I installed Mdk8. Sorry to post them all in the same message, but I don't know whether or not they are related. What I did during the installation was to change (all partitions but one) to ReiserFS. But I did no repartitioning, just changed the FS from Ext2. 1. The harddrive is very slow, compared to before. A rough estimate is 3-5 times slower when reading from disk. This is also true on fairly small files, which I expected to benefit from using ReiserFS. 2. Using hdparm on the drive has no perceptible change whatsoever. I have fiddled with all the ususal settings to improve my disappointing performance, but with no effect. Doesn't hdparm work with Reiserfs? 3. The size of one of the partitions is incorrectly estimated by df. df says this: used: /dev/hda6 126M 80M 46M 64% /home but du -sh /home says this: 52M /home There seems to be about 30M missing, and this has been th case since installing. Could someone help me shed some light on these issues? TIA Jesper p.s. Here follows my /etc/fstab, if useful: /dev/hda8 / reiserfs defaults 1 1 /dev/hda5 /boot ext2 noatime 1 2 none /dev/pts devpts mode=0620 0 0 /dev/hda6 /home reiserfs defaults 1 2 /mnt/cdrom /mnt/cdrom supermount fs=iso9660,dev=/dev/cdrom 0 0 /mnt/floppy /mnt/floppy supermount fs=vfat,dev=/dev/fd0 0 0 /dev/hda1 /mnt/windows vfat user,exec,umask=0,codepage=850,iocharset=iso8859-1 0 0 none /proc proc defaults 0 0 /dev/hda7 swap swap defaults 0 0 Well, this is what I've done: Installed MD 7.2 with Reiser (with my motherboaard, Soltek SL-75DRV, the MD 8.0 with ext2 the XWindows simply don't start after install). With 7.2 everything works really fine. Upgrate to 8.0 and use old kernel. Here you have MD 8.0, Reiser, and UDMA. (cdrecord do not work with old kernels) Fedneg
[expert] 3 Hard-drive problems
Below follow three problems I've had since I installed Mdk8. Sorry to post them all in the same message, but I don't know whether or not they are related. What I did during the installation was to change (all partitions but one) to ReiserFS. But I did no repartitioning, just changed the FS from Ext2. 1. The harddrive is very slow, compared to before. A rough estimate is 3-5 times slower when reading from disk. This is also true on fairly small files, which I expected to benefit from using ReiserFS. 2. Using hdparm on the drive has no perceptible change whatsoever. I have fiddled with all the ususal settings to improve my disappointing performance, but with no effect. Doesn't hdparm work with Reiserfs? 3. The size of one of the partitions is incorrectly estimated by df. df says this: used: /dev/hda6 126M 80M 46M 64% /home but du -sh /home says this: 52M /home There seems to be about 30M missing, and this has been th case since installing. Could someone help me shed some light on these issues? TIA Jesper p.s. Here follows my /etc/fstab, if useful: /dev/hda8 / reiserfs defaults 1 1 /dev/hda5 /boot ext2 noatime 1 2 none /dev/pts devpts mode=0620 0 0 /dev/hda6 /home reiserfs defaults 1 2 /mnt/cdrom /mnt/cdrom supermount fs=iso9660,dev=/dev/cdrom 0 0 /mnt/floppy /mnt/floppy supermount fs=vfat,dev=/dev/fd0 0 0 /dev/hda1 /mnt/windows vfat user,exec,umask=0,codepage=850,iocharset=iso8859-1 0 0 none /proc proc defaults 0 0 /dev/hda7 swap swap defaults 0 0
Re: [expert] 3 Hard-drive problems
On Saturday 16 June 2001 07:23, Jesper Holmberg wrote: Below follow three problems I've had since I installed Mdk8. Sorry to post them all in the same message, but I don't know whether or not they are related. What I did during the installation was to change (all partitions but one) to ReiserFS. But I did no repartitioning, just changed the FS from Ext2. 1. The harddrive is very slow, compared to before. A rough estimate is 3-5 times slower when reading from disk. This is also true on fairly small files, which I expected to benefit from using ReiserFS. 2. Using hdparm on the drive has no perceptible change whatsoever. I have fiddled with all the ususal settings to improve my disappointing performance, but with no effect. Doesn't hdparm work with Reiserfs? 3. The size of one of the partitions is incorrectly estimated by df. df says this: used: /dev/hda6 126M 80M 46M 64% /home but du -sh /home says this: 52M /home There seems to be about 30M missing, and this has been th case since installing. Could someone help me shed some light on these issues? TIA Jesper p.s. Here follows my /etc/fstab, if useful: /dev/hda8 / reiserfs defaults 1 1 /dev/hda5 /boot ext2 noatime 1 2 none /dev/pts devpts mode=0620 0 0 /dev/hda6 /home reiserfs defaults 1 2 /mnt/cdrom /mnt/cdrom supermount fs=iso9660,dev=/dev/cdrom 0 0 /mnt/floppy /mnt/floppy supermount fs=vfat,dev=/dev/fd0 0 0 /dev/hda1 /mnt/windows vfat user,exec,umask=0,codepage=850,iocharset=iso8859-1 0 0 none /proc proc defaults 0 0 /dev/hda7 swap swap defaults 0 0 If you are using a VIA chipset, the slow-down is ftom the disabling of DMA on the ide bus. The Bug was admitted just before we shipped, and we had no time to refine the crippling to the particular bad chip. Reiserfs is iffy in this latest edition. It is really affecting other parts of the kernel, particularly nfs. The only good news is that the notail partitions seem stable (probably no help for the many small files scenario.) But reiser is not generally faster on many small files. the improved storage efficiency ot the system is bought a cost of incredible code complexity. The notail takes much more storage for a host of small files, but will look them up a lot faster, because the data tree structure is not complicated by alien objects. Try installing with kernel-linus-2.4.3-2mdk off the install disk and booting with that. Of course, no reiser partitions but it should be acceptably fast. Or wait for MandrakeFreq scheduled to be out soon for a little more speed, or possibly a lot, and still with Reiser. Civileme
