Esther Filderman wrote:
To some degree, OpenAFS will always write slower than standard NFS, because AFS is actually making sure it's not writing crap. NFS will happily write stuff at blazingly fast speeds, not caring whether the data it writes is sane or corrupted.
The reason NFS appears to be faster is because you're not doing an apple - apples comparision - if you were you would have to turn off attribute caching on NFS - at that point you'd find that performance is essentially equal Rich
I'm told that you can tell NFSv3 to do error checking and it slows the write speed WAY down. I've never played with it myself (yet). On the other hand, you should be able to get a bit more speed out of this. I'll echo what Jason said -- look at upping your chunksize flag on afsd. For a system that's writing lots of large files, sending the files over in larger chunks should help. I would start with -10 or -12 and work from there. Good luck. Moose _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
-- Rich Sudlow University of Notre Dame Center for Research Computing 128 Information Technology Center PO Box 539 Notre Dame, IN 46556-0539 (574) 631-7258 office phone (574) 631-9283 office fax _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
