Are there any plans to support record sizes larger than 128k? We use ZFS file systems for disk staging on our backup servers (compression is a nice feature here), and we typically configure the disk staging process to read and write large blocks (typically 1MB or so). This reduces the number of I/Os that take place to our storage arrays, and our testing has shown that we can push considerably more I/O with 1MB+ block sizes. Thanks for any insight, - Ryan -- UNIX Administrator http://prefetch.net
long topic, it was discuss in a previous thread. in relation to this, there is http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6415647 which can be of interest selim On 9/4/07, Matty <matty91 at gmail.com> wrote:> Are there any plans to support record sizes larger than 128k? We use > ZFS file systems for disk staging on our backup servers (compression > is a nice feature here), and we typically configure the disk staging > process to read and write large blocks (typically 1MB or so). This > reduces the number of I/Os that take place to our storage arrays, and > our testing has shown that we can push considerably more I/O with 1MB+ > block sizes. > > Thanks for any insight, > - Ryan > -- > UNIX Administrator > http://prefetch.net > _______________________________________________ > zfs-discuss mailing list > zfs-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >
Matty writes: > Are there any plans to support record sizes larger than 128k? We use > ZFS file systems for disk staging on our backup servers (compression > is a nice feature here), and we typically configure the disk staging > process to read and write large blocks (typically 1MB or so). This > reduces the number of I/Os that take place to our storage arrays, and > our testing has shown that we can push considerably more I/O with 1MB+ > block sizes. > So other FS and raw devices clearly benefit from larger blocksize but the way ZFS schedule such I/Os, I don''t expect anymore more throughput from bigger blocks. Maybe you''re hitting something else that limits throughput ? -r > Thanks for any insight, > - Ryan > -- > UNIX Administrator > http://prefetch.net > _______________________________________________ > zfs-discuss mailing list > zfs-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss