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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