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dvck0
n00b
Joined: 27 May 2004
Posts: 18
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 Posted: Mon Mar 28, 2005 12:58 am Post subject: SATA copy file, system slow down |
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Hi
I have problem with system performance, if copy files on SATA disk or between SATA.
Asus P4P800
p42.8
1gb
2x200GB sata hdd
kernel 2.6.11-r4
swap partition size 512MB
if I copy file, system is load 100%
help me please |
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lbrtuk
l33t
Joined: 08 May 2003
Posts: 910
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| Posted: Mon Mar 28, 2005 1:44 am Post subject: |
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This is because you don't have dma enabled for your drive.
Are you using the scsi libata drivers? |
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dvck0
n00b
Joined: 27 May 2004
Posts: 18
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| Posted: Mon Mar 28, 2005 2:19 pm Post subject: |
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yes i use drives in kernel
#
# SCSI low-level drivers
#
CONFIG_SCSI_SATA=y
CONFIG_SCSI_ATA_PIIX=y
i don't know, how enabled dma for SATA
hdparm don't work with SCSI devices |
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lbrtuk
l33t
Joined: 08 May 2003
Posts: 910
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| Posted: Mon Mar 28, 2005 6:19 pm Post subject: |
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| All scsi sata drivers set themselves to use dma by default, so you shouldn't have to do anything. The drives show up properly as /dev/sda etc. then? |
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dvck0
n00b
Joined: 27 May 2004
Posts: 18
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| Posted: Mon Mar 28, 2005 9:16 pm Post subject: |
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yes i have sata disk in /dev/sda and /dev/sdb
but not solved my problem
system is very high load if I copy files
if i start copy speed is 40MB/s but a moment 11MB/s and system high load
some buffer is full?? i don't know
pls help me |
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