BackupPC-users

Re: [BackupPC-users] Setup two NIC's to improve performance

2010-06-09 13:13:05
Subject: Re: [BackupPC-users] Setup two NIC's to improve performance
From: Ed McDonagh <ed.mcdonagh AT rmh.nhs DOT uk>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Wed, 09 Jun 2010 18:10:40 +0100
What about the big and little 'm'? 'm'illi/'M'ega... makes quite a lot
of difference too, even if a millibit/byte isn't a very useful unit!

Ed

On Wed, 2010-06-09 at 17:09 +0100, Tyler J. Wagner wrote:
> Doh! I missed the big B, and I'm a network engineer. No donut for me!
> 
> Tyler
> 
> On Wednesday 09 June 2010 16:47:48 Bruce wrote:
> > Oh, umn sorry.
> > 
> > I should have been more clear.  I was trying to say 100 megabyte (MB)
> > per second.  Not mbit (mb).
> > 
> > I've actually seen 109MB/s on a couple of intel nics here.
> > 
> > Tyler J. Wagner wrote:
> > > On Wednesday 09 June 2010 16:07:32 Bruce wrote:
> > >> Some notes on this though.  A good professional 1GB nic can push about
> > >> 100/MBs.  Often you will run into CPU or HD bottlenecks before you get
> > >> this far unless you've got a pretty decent cpu and  some type of raid hd
> > >> setup.
> > >
> > > I have a no-name server with a 3-ware SATA RAID controller and two
> > > gigabit ethernet interfaces. Between two servers on the same gigabit LAN,
> > > using default 1500-byte MTU, copying between disks, I can push 200 mbit.
> > > Just testing UDP with iperf I can easily hit 400 mbit.
> > >
> > > Gigabit should sustain 600 mbit. If you're seeing 100 mbit, keep
> > > investigating.
> > >
> > > Regards,
> > > Tyler
> > 
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