Re: [Networker] Slow speeds to disk.

As previously posted I have averaged 35MB/sec with a single job on my
similar setup.
My settings
2.6 kernel with JFS, large file system, maxtor maxline SATA and 3 ware
controllers.
I only use 2 partitions for 10TB. Unlike 6x, I found it easier in 7x to
have fewer partitions.

What kernel? 2.6 has some serious benefits. I am using 2.6.0-test9-bk12
and will probably try 2.6.3 when it comes out. Its been stable since I
installed it so I havent touched it.

What network adaptor? Ours is Intel Corp. 82546EB Gigabit. Is it set
right to match your switch?

Have you tried a bulk ftp test from a client to see throughput?

Are you using a hardware raid controller or software raid?

On the linux cluster list, they rave about the speed of software raid.
My particular setup uses hardware raid 5 assembled with software raid to
get the 2 large partitions.




On Tue, 2004-02-17 at 08:58, Ungaro, Matt wrote:
> Hi Everyone,
>         I have a Networker 7 server running on Redhat 9. This is on an
> Aberdeen Systems Blackwatch with 8 180GB IDE disks in a RAID 5. I'm backing
> up to disk before cloning off to tape. The adv_file devices are all on the
> RAID 5, formatted with JFS. Currently, I'm getting very poor speed writing to
> disk. I have 2 Gigabit Ethernet connections from this system, one into my
> internal network, and one into the DMZ, so I can backup both networks
> simultaneously without being bottlenecked by the firewall. All of my clients
> are at 100Mbps. I'm currently maxing out at 10MB/second to disk (I'm getting
> faster throughput with 1 stream going to my HVD Storedge L9). My question is,
> is there anything to do to speed this up? I would think 10MB/second would be
> the minimum speed I'd get, not the max. There's 4 adv_file devices, each one
> has 4 target sessions allowable, and the server is set to 64 for
> parrallelism. Any more info needed, let me know. I'm a tad bit confused and
> frustrated on this one.
>
> Matt Ungaro (mjungaro AT capitolindemnity DOT com)
> Network Specialist
> Capitol Indemnity Corporation
> 4610 University Ave. Ste. 1400
> Madison, WI  53705
> Phone: (608)232-5654
> Fax: (608)232-5671
>
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--
Charles Weber <weberc AT comcast DOT net>

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