[CentOS] How to speed up Rsync transfers

Dan Carl danc at bluestarshows.com
Sat Feb 23 16:38:24 UTC 2008


----- Original Message ----- 
From: "nate" <centos at linuxpowered.net>
To: <centos at centos.org>
Sent: Friday, February 22, 2008 10:33 PM
Subject: RE: [CentOS] How to speed up Rsync transfers


> Dan Carl wrote:
>>
>
>> I just ran a test from one local box the another on a 100Mbit link and 
>> the
>> fastest transfer OI got was 10MBytes/second but most were between
>> 1MBytes/second and 4MBytes/second.
>
> Pardon the stupid suggestions but
>
> - Did the test you run with iperf, was that a bi-directional test,
>  are you sure you weren't testing your inbound speed at ~700KByte/s
>  rather than your outbound speed? With most connections, inbound
>  speed is several times faster than outbound speed.
Not stupid question me stupid,  I only tested it one way.
I guess I just assumed iperf was testing both up and down.
I didn't have remote access to the source servers firewall, so I had iperf 
listening on the distination server.
Monday I'll run the test the other way.
> - Do you know what sort of bandwidth your "supposed" to have from your
>  ISP?
source server business DSL 1.5m down / 878k up
distination server T1 colo at a large ISP.
>
> nate
Sounds like I'll be stuck with the tranfer rate I'm getting.
Thanks Nate
Dan
>
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