Hi Brad, I believe benr experienced the same/similar issue here: http://www.opensolaris.org/jive/message.jspa?messageID=77347
If it is the same, I believe its a known ZFS/NFS interaction bug, and has to do with small file creation. Best Regards, Jason On 1/2/07, Brad Plecs <[EMAIL PROTECTED]> wrote:
I had a user report extreme slowness on a ZFS filesystem mounted over NFS over the weekend. After some extensive testing, the extreme slowness appears to only occur when a ZFS filesystem is mounted over NFS. One example is doing a 'gtar xzvf php-5.2.0.tar.gz'... over NFS onto a ZFS filesystem. this takes: real 5m12.423s user 0m0.936s sys 0m4.760s Locally on the server (to the same ZFS filesystem) takes: real 0m4.415s user 0m1.884s sys 0m3.395s The same job over NFS to a UFS filesystem takes real 1m22.725s user 0m0.901s sys 0m4.479s Same job locally on server to same UFS filesystem: real 0m10.150s user 0m2.121s sys 0m4.953s This is easily reproducible even with single large files, but the multiple small files seems to illustrate some awful sync latency between each file. Any idea why ZFS over NFS is so bad? I saw the threads that talk about an fsync penalty, but they don't seem relevant since the local ZFS performance is quite good. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
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