slow disk with kioslaves

sdpeterson · n00b Joined: 21 Mar 2005 Posts: 10

Did anyone submit a bug report for this? If so, could you point me to it so I can keep track of the progress? Thanks.

aries · Posted: Sat May 07, 2005 7:41 pm Post subject:

Hello. I just tried pmount and it works fine but slower than mounting with fstab.
Is it possible to tweak the mounting options with pmount?

If I mount an external harddisk with reiserfs and copy a 600MB file to this disk:
- mounted with fstab (with noatime option) transfer ratio >10MB/s.
- mounted with pmount and media:/ transfer ratio <5MB/s.

Turning KDED Media Manager OFF makes no difference for this.

btw: whats the difference (if there is any) between automatic mounting with ivman and pmount?

superstoned · Guru Joined: 17 Dec 2004 Posts: 430

aries · Posted: Mon May 09, 2005 7:40 pm Post subject:

Thanks!.

I ran some tests:
1. The temp directory seems to be in ///tmp/kde-xxx
2. I doubt if mounting pmount is really slower than mounting with fstab, see results
3. measuring transfer ratio by copying large files to the external disk (with krusader) is unreliable.
( testing transfer ratio with hparm is only possible directly to the harddisk (eg. hdparm -tT /dev/sda))

Writing about 600MB to my external firewire disk:
1. copy from hda2 to external disk: ~5-6MB/s mounted by pmount
2. copy from hda2 to external disk: ~10-15MB/s mounted by fstab
3. copy from hda2 to external disk: >10MB/s mounted by pmount
4. copy from hda2 to external disk: 0..15MB/s mounted by pmount

superstoned · Guru Joined: 17 Dec 2004 Posts: 430

aries · Posted: Tue May 10, 2005 5:30 pm Post subject:

I copy with krusader:

Krusader mounts my external disk named 65G media if I enter this disk.
After that the name changes into sda2, which is the mountpoint in /dev
Then copy from ~/test -> media:/sda2/mp3 and from media:/sda2/mp3 -> ~/test

I have some problems with pmount/kded:
- ¨buffer I/O error on device sda2, logical block 1610 ¨ (and some blocks more)
- REISERFS: aborting journal for filesystem on sdb2
- KDE deamon (kded) died and caused signal 11

Once the disk is mounted in KDE (krusader) the disk is available in the shell.
Unfortunately not before, what if you want to use pmount in shell only, with no KDE/gnome started?

Maybe this has todo one has to ´safely remove´ hardware, but I don know how to to this in KDE

superstoned · Guru Joined: 17 Dec 2004 Posts: 430

what is the filesystem on the externel disk? reiserfs problems might cause all this...

if you want to have this disk available in the shell, you just have to mount it yourself.