improving concurrency/performance

[Huaqing Zheng]

On 11/4/05, John Madden <jmadden at ivytech.edu> wrote:
> I've had great experience with the performance of Cyrus thus far, but I'm testing
> a migration at the moment (via imapcopy) and I'm having some pretty stinky
> results.  There's no iowait (4 stripes on a 2Gbps SAN), no cpu usage, nothing
> waiting on the network, and still I'm seeing terrible performance.  I assume this
> points to something internal, such as concurrency on the db files.

Have you tried running something like postmark

   http://packages.debian.org/stable/utils/postmark

to benchmark your filesystem?

--
Huaqing Zheng
Beer and Code Wrangler at Large