Hello all, For some reason, one of my partitions is MUCH slower than the others. Any other partition, even on the same disk, gives me speeds of 40-50 MB/s. This one however gives only 4-8 MB/s. This is independent of the partition being mounted or not. smartctl does not give me any errors, and fschk didn't find any problems either. Any thoughts/suggestions? Regards, Pieter Hulshoff
On Mon, 24 Jan 2005, Pieter Hulshoff wrote:
Hello all,
For some reason, one of my partitions is MUCH slower than the others. Any other partition, even on the same disk, gives me speeds of 40-50 MB/s. This one however gives only 4-8 MB/s. This is independent of the partition being mounted or not. smartctl does not give me any errors, and fschk didn't find any problems either. Any thoughts/suggestions?
What filesystem? How are you measuring the speed?
--
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Jon Nelson
On Monday 24 January 2005 22:41, Jon Nelson wrote:
On Mon, 24 Jan 2005, Pieter Hulshoff wrote:
Hello all,
For some reason, one of my partitions is MUCH slower than the others. Any other partition, even on the same disk, gives me speeds of 40-50 MB/s. This one however gives only 4-8 MB/s. This is independent of the partition being mounted or not. smartctl does not give me any errors, and fschk didn't find any problems either. Any thoughts/suggestions?
What filesystem? How are you measuring the speed?
Filesystem is ReiserFS, but since I'm using hdparm for the speedtest the filesystem shouldn't really matter. I've tried copying files as well though, and I see about the same difference in speed. Regards, Pieter Hulshoff
Pieter Hulshoff wrote:
For some reason, one of my partitions is MUCH slower than the others. Any other partition, even on the same disk, gives me speeds of 40-50 MB/s. This one however gives only 4-8 MB/s. This is independent of the partition being mounted or not. smartctl does not give me any errors, and fschk didn't find any problems either. Any thoughts/suggestions?
End of disk partitions can be considerably slower than those at the front, but factor of 10 is more than I can recall ever seeing. -- "The message of the cross is foolishness to those who are perishing, but to us who are being saved, it is the power of God." 1 Corinthians 1:18 NIV Team OS/2 ** Reg. Linux User #211409 Felix Miata *** http://members.ij.net/mrmazda/
On Monday 24 Jan 2005 21:22 pm, Pieter Hulshoff wrote:
Hello all,
For some reason, one of my partitions is MUCH slower than the others. Any other partition, even on the same disk, gives me speeds of 40-50 MB/s. This one however gives only 4-8 MB/s. This is independent of the partition being mounted or not. smartctl does not give me any errors, and fschk didn't find any problems either. Any thoughts/suggestions?
Is there a difference in the number of files, their sizes or how they are distributed across directories between this and the other partitions? Dylan
Regards,
Pieter Hulshoff
-- "I see your Schwartz is as big as mine" -Dark Helmet
On Tuesday 25 January 2005 01:08, Dylan wrote:
On Monday 24 Jan 2005 21:22 pm, Pieter Hulshoff wrote:
Hello all,
For some reason, one of my partitions is MUCH slower than the others. Any other partition, even on the same disk, gives me speeds of 40-50 MB/s. This one however gives only 4-8 MB/s. This is independent of the partition being mounted or not. smartctl does not give me any errors, and fschk didn't find any problems either. Any thoughts/suggestions?
Is there a difference in the number of files, their sizes or how they are distributed across directories between this and the other partitions?
Not really, and since I use hdparm for the speed testing those factors should be irrelevant. I've got 5 disks in this machine, 1 of which is set up exactly like this one (same partition sizes), and that one works as advertised. All other disks also act normal; it's just this one partition on this one disk. Even when I test the speed from a rescue setup I get the same numbers. Regards, Pieter Hulshoff
The Tuesday 2005-01-25 at 06:16 +0100, Pieter Hulshoff wrote:
Not really, and since I use hdparm for the speed testing those factors should be irrelevant.
I don't know, I have found some diferences between dos / linux partitions.
I've got 5 disks in this machine, 1 of which is set up exactly like this one (same partition sizes), and that one works as advertised. All other disks also act normal; it's just this one partition on this one disk. Even when I test the speed from a rescue setup I get the same numbers.
Did you test for badblocks? You can also run the manufacturer test utility, perhaps it has some problem. sfdisk --list devices will do some testing on the partition limits. I don't have more ideas. -- Cheers, Carlos Robinson
participants (5)
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Carlos E. R. -
Dylan -
Felix Miata -
Jon Nelson -
Pieter Hulshoff