On 6/24/06, Dan Nelson <[EMAIL PROTECTED]> wrote:
In the last episode (Jun 24), Nikolas Britton said:
> On 6/23/06, Nikolas Britton <[EMAIL PROTECTED]> wrote:
> > Thanks!, but I got rsh going. I first had to edit /etc/hosts.equiv,
> > after that I figured it out:
> >
> > tar cf - . | rsh 192.168.1.242 'cd /data; tar xpvf -'
> >
> > I was thinking tar -f as in file.tar but it's not, you have to cd
> > into the source directory you want to copy... anyways... I'm
> > getting around 30MB/s now... it should be in the 50-60MB/s range...
> > Good enough for now though. Thanks again...
> >
>
> hostA = P4 3GHz Prescott, Intel 82547EI GigE, FreeBSD 6.1/i386.
> hostB = Athlon64 3000, Marvell Yukon Lite GigE, FreeBSD 6.1/amd64.
>
> Anyone know why load is so high on hostA, is it because I used tar -v?
> top shows:
>
> CPU states: 0.0% user, 1.5% nice, 26.2% system, 61.4% interrupt, 10.9% idle
That 61% interrupt looks bad, but I don't have any ideas.
> PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
> 18698 nbritton 1 130 20 1292K 832K RUN 171:46 28.12% rsh
> 18696 nbritton 1 -4 -20 1588K 1068K getblk 48:25 6.88% bsdtar
Try raising the blocksize in tar. The default is 10K. This bumps it
to 64K:
tar cbf 128 - . | ...
Using: tar cbf 256 - . | rsh ... tar xpbf 64 -
Looks like that fixed the problems on hostA because hostB is now the
problem. The GigE and RAID controller on hostB both sit on the same
33MHz/32-bit PCI bus (Asus A8R-MVP)... and that doesn't help... but
those numbers should be closer to 50MB/s (((33x32)/10)/2 = 52.8MB/s).
hostA:
Load 0.62 0.58 0.58
42.4%Sys 18.3%Intr 4.9%User 0.0%Nice 34.3%Idl
Disks ad0 da0
KB/t 0.00 124
tps 0 257
MB/s 0.00 31.20
% busy 0 30
hostB:
Load 0.59 0.80 0.80
17.4%Sys 54.4%Intr 0.8%User 0.0%Nice 27.4%Idl
Disks ad0 da0
KB/t 0.00 122
tps 0 255
MB/s 0.00 30.43
% busy 0 92 <<<---
Thanks again!
--
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