Hello, I've been getting intermittant reports of slow read performance on a new AFS file server that I recently set up based on ZFS. It is using locally attached disks in a RAID-Z2 (double parity) configuration. I was wondering if anyone might be able to provide any ideas for tuning / investigating the problem. The slow performance that's been reported seems to be against a RW volume with no replicas.
Right now, I am using OpenAFS 1.4.4 with the "no fsync" patch. The options I'm using for the fileserver are "-nojumbo" and "-nofsync". I've also set the ZFS parameters "atime" to "off" and "recordsize" to "64K" as recommended in Dale Ghent's presentation at the OpenAFS workshop. There are a bunch of file server options that I'm not sure if they would help or not. Any advice would be appreciated as I'm looking at ZFS-based file servers for some new file servers I'm setting up, but my experience so far has been mostly with the OpenAFS 1.2 inode-based file server. Brian -- Brian Sebby ([EMAIL PROTECTED]) | Unix and Operation Services Phone: +1 630.252.9935 | Computing and Information Systems Fax: +1 630.252.4601 | Argonne National Laboratory _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
