[Gluster-devel] [Gluster-users] glusterfs replica volume self heal dir very slow!!why?

Roman romeo.r at gmail.com
Fri Sep 5 11:23:57 UTC 2014


consider looking at this topic
. This guy made lots of test. It seems like 50 MB/s (or around 400 Mbps) is
the theoretical maximal limit for replica 1. I am waiting for comments to
this too.

2014-09-05 11:15 GMT+03:00 justglusterfs at gmail.com <justglusterfs at gmail.com>

> Hi all:
>       I do the  following test:
>      I create a glusterfs  replica volume (replica count is 2 ) with two
> server node(server A and server B), then  mount the volume in client node,
>     then, I  shut down the network of server A node, in  client node, I
> copy a dir(which has a lot of small files), the dir size is *2.9GByte,*
>     when  copy finish, I start the network of server A node,   now,
> glusterfs  self-heal-daemon start heal dir  from  server B to  server  A,
>     in the  end,  I find the self-heal-daemon   heal the  dir *use  40 m**inutes,
> * *It's too slow!  why?*
>    I   find out   related options  with  self-heal, as  follow:
> *   cluster.self-heal-window-size*
>  *   cluster.self-heal-readdir-size*
> *   cluster.background-self-heal-count*
>   I  want  to ask, modify  the above options can improve  the
>  performance of heal dir?  if possible, please give a reasonable value
> about above options。
>   thanks!
> ------------------------------
> justglusterfs at gmail.com
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Best regards,
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