On Wed, 8 Nov 2006, Joshua Baker-LePain wrote:
Date: Wed, 8 Nov 2006 07:43:23 -0500 (EST) From: Joshua Baker-LePain jlb17@duke.edu Reply-To: CentOS mailing list centos@centos.org To: CentOS mailing list centos@centos.org Subject: Re: [CentOS] Problems with LTO-3 and U320 on Centos 4.4
On Wed, 8 Nov 2006 at 12:21pm, Adam Huffman wrote
Apologies for hijacking the thread, but I'm seeing speeds of only around 30MB/s with an LTO3 library connected via 2Gb fibre channel, both with tar and with Bacula.
Would you know how to go about investigating this?
What blocksize are you using? That has the biggest impact on tape performance of any of the factors I've looked at.
I had some experiences with much slower systems (both tapes, connections and CPU/memory) when to get any performance close to rated tape speed, I had to use buffering (there was buffer utility); I guess -fifo feature of star should be looked at.
Wojtek