Hmm pretty odd. When I ran test on ceph kernel vs ceph fuse , FUSE has always been slower for both read and writes.
Try using tools like fio to run IO test with directIO(bypass system cache) -- Deepak On Apr 8, 2017, at 4:50 PM, Kyle Drake <k...@kyledrake.net<mailto:k...@kyledrake.net>> wrote: Pretty much says it all. 1GB test file copy to local: $ time cp /mnt/ceph-kernel-driver-test/test.img . real 2m50.063s user 0m0.000s sys 0m9.000s $ time cp /mnt/ceph-fuse-test/test.img . real 0m3.648s user 0m0.000s sys 0m1.872s Yikes. The kernel driver averages ~5MB and the fuse driver averages ~150MBish? Something crazy is happening here. It's not caching, I ran both tests fresh. Ubuntu 16.04.2, 4.4.0-72-generic, ceph-fuse 10.2.6-1xenial, ceph-fs-common 10.2.6-0ubuntu0.16.04.1 (I also tried the 16.04.2 one, same issue). Anyone run into this? Did a lot of digging on the ML and didn't see anything. I'm was going to use FUSE for production, but it tends to lag more on a lot of small requests so I had to fall back the kernel driver. _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------
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