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Sabbie
n00b
Joined: 23 May 2004
Posts: 24
Location: Netherlands
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 Posted: Thu Oct 01, 2009 1:00 pm Post subject: Unresponsive system when copying files |
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My box becomes very slow when copying a large amount of files from one partition to another.
When copying files from sdb3 (ReiserFS) to sdb5 (Ext3) (internal sata disk) the load average slowly climbs to somewhere around 9 and my box becomes very slow.
hdparm output:
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root@pearl linux # hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads: 3464 MB in 2.00 seconds = 1732.17 MB/sec
Timing buffered disk reads: 198 MB in 3.01 seconds = 65.84 MB/sec
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Veldrin
Veteran
Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Thu Oct 01, 2009 1:09 pm Post subject: |
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how do you copy those files? drag-n-drop? CLI + cp?
What scheduler are you using (cat /sys/block/sda/queue/scheduler should give you a hint)
How much RAM is installed, and how much is used (during copy) |
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Sabbie
n00b
Joined: 23 May 2004
Posts: 24
Location: Netherlands
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| Posted: Thu Oct 01, 2009 2:37 pm Post subject: |
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Copied them using Drag n Drop @ Gnome + nautilus.
Problem persists when copying in a terminal.
Scheduler:
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sabbie@pearl ~ $ cat /sys/block/sdb/queue/scheduler
noop anticipatory deadline [cfq]
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2GB of memory is installed, 1.2GB is used, this doesn't really change during the copying. Swap file is at ease. |
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Yamakuzure
Advocate
Joined: 21 Jun 2006
Posts: 2285
Location: Adendorf, Germany
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| Posted: Thu Oct 01, 2009 3:02 pm Post subject: |
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If you are working on a 64bit system then this thread might be relative:
AMD64 system slow/unresponsive during disk access (Part 2)
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