Hi,
I just installed the last version of glusterfs 3.0 and I got really bad
performance.
Here it is :
# dd if=/dev/zero of=/users/glusterfs_mnt/sample bs=1k count=100000
This create a file of 100Mo and I got those results :
NFS = 75 Mo/s
Gluster=5,8Mo/s
I tried to change block size, change value of write behind parameters, to add
Read Ahead translator, to remove all performance translator( and it's worst :\
), try with afr translator ... but no change!
My configuration is : replicated and distributed (RAID 10 over network) on
server side over 4 bricks, Giga Ethernet on all servers and clients
What kind of performance do you have? Is it normal?
I also tried to run a iostat test and it run during 24H of CPU time (3 days at
all)....
Here my vol file of server and client computer :
# /etc/glusterfs/glusterfsd.vol
volume posix
type storage/posix
option directory /users/gluster-data
end-volume
volume locks
type features/locks
subvolumes posix
end-volume
volume brick
type performance/io-threads
option thread-count 8
subvolumes locks
end-volume
volume server
type protocol/server
option transport-type tcp/server
option auth.addr.brick.allow *
subvolumes brick
end-volume
------------------------------------------------
#/etc/glusterfs/glusterfs.vol
volume brick1
type protocol/client
option transport-type tcp
option remote-host # IP address of the remote brick
option remote-subvolume brick # name of the remote volume
end-volume
volume brick2
type protocol/client
option transport-type tcp
option remote-host # IP address of the remote brick
option remote-subvolume brick # name of the remote volume
end-volume
volume brick3
type protocol/client
option transport-type tcp
option remote-host
option remote-subvolume brick
end-volume
volume brick4
type protocol/client
option transport-type tcp
option remote-host
option remote-subvolume brick
end-volume
volume rep1
type cluster/replicate
subvolumes brick1 brick2
end-volume
volume rep2
type cluster/replicate
subvolumes brick3 brick4
end-volume
volume distribute
type cluster/distribute
subvolumes rep1 rep2
end-volume
volume writebehind
type performance/write-behind
option window-size 1MB
subvolumes distribute
end-volume
volume cache
type performance/io-cache
option cache-size 512MB
subvolumes writebehind
end-volume
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