Ideas:
1. Fragmented files?
2. Overload of your computer's power supply, causing it to supply reduced
voltages to some peripherals, which causes them to make too many soft
errors?
3. Somewhat defective ribbon, which causes the same result?
Do you have a disk testing program suitable for your hard disk, which
would let you check the hard disk and see if it has unusually high rate of
soft errors (for IBM produced hard disks, there is such a test program,
which is provided together with Disk Manager)?
--- Omer
There is no IGLU Cabal. Errors were made and recovered from with no error
messages and no statistics, until that fateful day....
WARNING TO SPAMMERS: see at http://www.zak.co.il/spamwarning.html
On Sat, 19 Jan 2002, tal amir wrote:
> i am having the strangest problem :
>
> around 2 days ago one of my four disks (seagate ST330620A) started to respond very
>slowly.
> this happened without me changing any of its parameter's or moving it to another
> ide channel or anything.
> it gives me about 4mbps, unlike all the others that give 20-35 mbps :
>
>
> [root@whatsup home]# hdparm -t /dev/hda
>
> /dev/hda:
> Timing buffered disk reads: 64 MB in 1.82 seconds = 35.16 MB/sec
> [root@whatsup home]# hdparm -t /dev/hdb
>
> /dev/hdb:
> Timing buffered disk reads: 64 MB in 15.55 seconds = 4.12 MB/sec
> [root@whatsup home]# hdparm -t /dev/hdc
>
> /dev/hdc:
> Timing buffered disk reads: 64 MB in 2.92 seconds = 21.92 MB/sec
> [root@whatsup home]# hdparm -t /dev/hdd
>
> /dev/hdd:
> Timing buffered disk reads:64 MB in 3.12 seconds = 20.51 MB/sec
> [root@whatsup home]#
>
>
> so the disk writing is slow, but the cash writing is fast :
>
> [root@whatsup home]# hdparm -T /dev/hda
>
> /dev/hda:
> Timing buffer-cache reads: 128 MB in 0.61 seconds =209.84 MB/sec
> [root@whatsup home]# hdparm -T /dev/hdb
>
> /dev/hdb:
> Timing buffer-cache reads: 128 MB in 0.60 seconds =213.33 MB/sec
> [root@whatsup home]# hdparm -T /dev/hdc
>
> /dev/hdc:
> Timing buffer-cache reads: 128 MB in 0.61 seconds =209.84 MB/sec
> [root@whatsup home]# hdparm -T /dev/hdd
>
> /dev/hdd:
> Timing buffer-cache reads: 128 MB in 0.60 seconds =213.33 MB/sec
> [root@whatsup home]#
>
> i am using ext3 on all 4 disks (not that the filesystem suppose to change much in
> this case).
>
> this is mandrake 8.1, Linux version 2.4.8-26mdk .
> this is the only seagate drive, the 3 others are IBM-DTLA-307030, all of them
> are 7200 rpm.
>
> any idea what might couse this ?
>
>
> ------------------------------
> Amir Tal
> System Administrator
> icq : 15748705
> http://whatsup.homelinux.com
> -------------------------------
>
>
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