On Tue, 17 May 2011 23:14:03 +0100 Hugo Monteiro <[email protected]> wrote:
> - Low performance and high discrepancy between test results > Transfer rates (only a few) hardly touched 30MB/s between the server and > a client sitting on the same network, connected via GB ethernet. Most of > the times that transfer rate is around 20MB/s, falling down to 13 or > 14MB/s in some cases. The client and server configs would help. I'm not used to looking at single-client performance, but... assuming you're using a disk cache, keep in mind the data is written twice: once to the cache and once on the server. So, especially when you're running the client and server on the same machine, there's no way you're going to reach the theoretical 110M/s of the disk. You may want to see what you get with memcache (or if you want to try a 1.6 client, cache bypass) and a higher chunksize. Just running dd on a box I have, running a 1.4 afsd with -memcache -chunksize 24 made it jump from the low 20s to high 40s/low 50s (M/s), after starting with the defaults for a 100M disk cache. -- Andrew Deason [email protected] _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
