Re: rebuild fs

2003-08-05 Thread Oleg Drokin
Hello! On Tue, Aug 05, 2003 at 04:56:55PM +0400, Hans Reiser wrote: rephrase that as, use 3.6.11, if it still fails, tell us, the segfault will at least be fixed regardless of whether fsck has enough data to do its job. But it was not failing on the IDE drive anyway. I don't understand

AW: rebuildfs

2003-08-05 Thread Thorsten Mauch
Hi I'm really not a expert in this. I found the tip in: http://www.unixwiz.net/techtips/recovering-ext2.html Maybe it helps a bit Do you mean that we could just miss sync option and got wrong result? I will test it again.

Re: rebuild fs

2003-08-05 Thread Oleg Drokin
Hello! On Tue, Aug 05, 2003 at 04:28:15PM +0400, Hans Reiser wrote: But while rebuilding the tree, I got a segmentation fault. Because I didn't want to continue work on the original raid system, I copied the entire raid disk to the IDE disk. dd if=/dev/rd/c0d0 of=/dev/hda

Re: r4 v. ext3, quick speed vs. cpu experiments

2003-08-05 Thread Brandon Low
On Tue, 08/05/03 at 23:08:31 +0200, Szakacsits Szabolcs wrote: BTW, from your numbers it seems ext3 gives better overall performance. That is an incorrect statement. Reiserfs is KNOWN to be heavier on CPU than other filesystems, it's benefit is not there, it's benefit is in speed of operation,

Re: rebuildfs

2003-08-05 Thread Vitaly Fertman
If dd without conv=noerror fails for you -- you have problems with reading some blocks -- you should use dd_rescue instead as dd forgets to create holes in the target image when cannot read some block. This explains garbage in files in your case. This same effect is available with normal

r4 v. ext3, quick speed vs. cpu experiments

2003-08-05 Thread Grant Miner
mozilla-1.5a.tar is mozilla 1.5alpha source tar, uncompressed. Partition mkfs.ext3 or mkfs.reiser4 --keys=SHORT is run before each run. Linux is 2.6.0-test2. untar mozilla-1.5a.tar (file is on a reiser3 partition): ext3: 17.64s 28% cpu reiser4: 10.79s 67% cpu sum: reiser4 0.61x time, 2.39x cpu

Re: r4 v. ext3, quick speed vs. cpu experiments

2003-08-05 Thread Grant Miner
Szakacsits Szabolcs wrote: How much memory you have? How big is mozilla-1.5a.tar? Did you include 'sync' in the tests? It seems reiser4 numbers are mostly in-memory operations and not all data flushed to disk while this is apparently not true for ext3. BTW, XFS numbers would be also/more

Re: Filesystem Tests

2003-08-05 Thread Andrew Morton
Grant Miner [EMAIL PROTECTED] wrote: I tested the performace of various filesystems with a mozilla build tree of 295MB, with primarily writing and copying operations. The test system is Linux 2.6.0-test2, 512MB memory, 11531.85MB partition for tests. Sync is run a few times throughout