Hello Matthew, Wednesday, February 14, 2007, 1:50:28 AM, you wrote:
MA> Robert Milkowski wrote: >> Hello zfs-discuss, >> >> A file system with a lot of small files. >> zfs send fsA | ssh [EMAIL PROTECTED] zfs recv fsB >> >> On a sending site nothing else is running or touching the disks. >> Yet still the performance is far from being satisfactionary. >> When serving data the same pool/fs can read over 100MB/s. >> This is s10u3. >> >> Maybe it's due that zfs send is single threaded and traversing lot >> of small blocks just take a time and can't saturate underlying LUNs? MA> Yes, there are two problems: MA> 1. as you noticed, zfs send only issues one read i/o at a time. MA> 2. there are some inefficiencies with the way we process the files, so MA> that many small files is considerably slower than a few large files MA> (even with the same size and number of blocks) MA> We're working on these... Any BUG IDs so I can track them? -- Best regards, Robert mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
