git: kernel - Fix cluster_write() inefficiency

Matthew Dillon dillon at
Mon Mar 6 17:39:40 PST 2017

commit cf297f2cccd7fd102041ebf174af66a31a5ef5ce
Author: Matthew Dillon <dillon at>
Date:   Mon Mar 6 17:36:48 2017 -0800

    kernel - Fix cluster_write() inefficiency
    * A bug in the cluster code was causing HAMMER to write out 64KB buffers in
      32KB overlapping segments, resulting in data being written to the media
    * This fix just about doubles HAMMER's sequential write bandwidth.

Summary of changes:
 sys/kern/vfs_cluster.c | 41 +++++++++++++++++++++--------------------
 1 file changed, 21 insertions(+), 20 deletions(-)

DragonFly BSD source repository

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