On 02/11/2012 07:44 AM, Wu Fengguang wrote:
Note that it's data for XFS. ext4 seems to have some problem with the workload: the majority pages are found to be writeback pages, and the flusher ends up blocking on the unconditional wait_on_page_writeback() in write_cache_pages_da() from time to time... XXX: commit NFS unstable pages via write_inode() XXX: the added congestion_wait() may be undesirable in some situations
Even with these caveats, this seems to be the right way forward.
CC: Jan Kara<jack@xxxxxxx> CC: Mel Gorman<mgorman@xxxxxxx> CC: Rik van Riel<riel@xxxxxxxxxx> CC: Greg Thelen<gthelen@xxxxxxxxxx> CC: Minchan Kim<minchan.kim@xxxxxxxxx> Signed-off-by: Wu Fengguang<fengguang.wu@xxxxxxxxx>
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