On Tuesday 13 April 2004 16:39, Götz Reinicke wrote:
> Hi,
>
> I have tried to copy some files to one server using scp and noticed a
> poor speed. I can copy files with about 4 MB/sec :-(.
>
> Copying the same files to other servers I get a speed about 8 MB/sec.
>
> The NIC is a 3Com 905b fastethernet, the switch is a cisco catalyst
> fastethernet.
>
> Any ideas what can cause this difference?
>
> A hdparm -Tt on the "slow" server showes:
>
> Timing buffer-cache reads: 512 MB in 2.00 seconds = 256.00 MB/sec
> Timing buffered disk reads: 84 MB in 3.03 seconds = 27.72 MB/sec
scp uses ssh to copy file, which includes encryption and maybe
compression. Due to thus, the speed depends on the CPU speed too.
>
> This should be ok, or?
>
> Regards
>
> Götz Reinicke
> --
> Götz Reinicke
> IT Koordinator - IT OfficeNet
>
> Tel. +49 (0) 7141 - 969 420
> Fax +49 (0) 7141 - 969 55 420
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>
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>
>
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Regards,
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