Dear all, I was interested in the performance difference between filesystem operations inside a local and global zone. Therefore I utilized filebench and made several performance tests with the OLTP script for filebench. Here are some of my results:
-> In the global zone (filebench operates on basis of UFS): [b]281,850.2 IOPS/sec[/b] -> In the local zone (filebench operates on basis of UFS): [b]181,716 IOPS/sec[/b] So a huge difference bewteen the local and global zone when operating on basis of UFS. After I saw the huge difference I wondered if I will see such a huge difference when using ZFS. Here are the results: -> In the global zone (filebench operates on basis of ZFS): [b]1,710,268.1 IOPS/sec[/b] -> In the local zone (filebench operates on basis of ZFS): [b]449,332.6 IOPS/sec[/b] I was a little bit surprised to see a big difference again. Besides: ZFS outperforms UFS - but this is already known. So in a first analysis I suspected the loop-back-device driver to cause the performance degredation. I repeated the tests without the loop-back-driver by mounting UFS device directly inside the zone. I couldn't discover the performance degredation again. This leads me to the assumption, that the loop-back-driver causes the performance degredation - but how can I make sure it is the loop-back-driver and not anything else? Does anyone has an idea how to explore this phenomen? Regards André -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
