{"push_id":1905571669,"size":1,"distinct_size":1,"ref":"refs/heads/stable/11","head":"fe0ae490cf21ab97cabb4326ee2807a244b66883","before":"ba9ac57dc08f2ed5be226dd43cde250367136373","commits":[{"sha":"fe0ae490cf21ab97cabb4326ee2807a244b66883","author":{"name":"mav","email":"a9bcd1b9f954a1eccb9b7f5cfa8807256cd67e88@FreeBSD.org"},"message":"MFC r321794: Improve FHA locality control for NFS read/write requests.\n\nThis change adds two new tunables, allowing to control serialization for\nread and write NFS requests separately.  It does not change the default\nbehavior since there are too many factors to consider, but gives additional\nspace for further experiments and tuning.\n\nThe main motivation for this change is very low write speed in case of ZFS\nwith sync=always or when NFS clients requests sychronous operation, when\nevery separate request has to be written/flushed to ZIL, and requests are\nprocessed one at a time.  Setting vfs.nfsd.fha.write=0 in that case allows\nto increase ZIL throughput by several times by coalescing writes and cache\nflushes.  There is a worry that doing it may increase data fragmentation\non disks, but I suppose it should not happen for pool with SLOG.\n\nSponsored by:\tiXsystems, Inc.","distinct":true,"url":"https://api.github.com/repos/bsd-hacker/freebsd/commits/fe0ae490cf21ab97cabb4326ee2807a244b66883"}]}
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