I was experimenting with this tuning option and I can't seem to realize any difference in performance. I'm using 'iozone' to test performance on a couple of Sun Solaris 9 boxes using OpenAFS 1.2.11 and I'm trying to optimize for writing a large file into AFS space. I currently have a 1GB AFS cache and I'm writing a 128MB file into AFS space. With 'fs storebehind -allfiles 0' I get 21MB/s. With 'fs storebehind -allfiles 131072' (128MB) I get the same basic value.
The command line I'm using is: iozone -c -i 0 -s 128m -r 32k -f testfile Does this 'storebehind' option simply not work under Solaris? I wonder because when I use 'iostat -x -z 5' to watch disk performance the write rate is very bursty. I've see up to 40-60MB/s on the AFS cache LUN (it's a stripe from a SAN), but then it trails off and then comes back. On a side note, does performance of AFS cache deteriorate as the cache gets larger? If I wanted a 128GB AFS cache would I be in trouble? Any advice? Chris _______________________________________________ OpenAFS-info mailing list [EMAIL PROTECTED] https://lists.openafs.org/mailman/listinfo/openafs-info
