Date: Sat, 24 Jun 2006 11:33:18 -0700 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: "Dan Nelson" <dnelson@allantgroup.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: help with 'tar|rsh tar' Message-ID: <ef10de9a0606241133x33b64c78sae4bf961a4bae46f@mail.gmail.com> In-Reply-To: <20060624162747.GC83209@dan.emsphone.com> References: <ef10de9a0606231834w4e286e90u4027ff6f0835131c@mail.gmail.com> <20060624023139.GA83209@dan.emsphone.com> <ef10de9a0606232054lde0552dv38ecee1a50f2b5b9@mail.gmail.com> <ef10de9a0606240900wb6684drf657de43f644c94e@mail.gmail.com> <20060624162747.GC83209@dan.emsphone.com>
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On 6/24/06, Dan Nelson <dnelson@allantgroup.com> wrote: > In the last episode (Jun 24), Nikolas Britton said: > > On 6/23/06, Nikolas Britton <nikolas.britton@gmail.com> 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! -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/
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