[Gluster-users] GlusterFS Slow Performance In One Direction

[Jeffery Soo]

Sorry to bump this, but I'm surprised that no one had any thoughts.
What could cause the speed in my setup to be so slow in one direction?

Thanks
Jeffery Soo wrote:
> Does anyone have any ideas?
> I also notice the performance on listing and other things is not like 
> DRBD.
> Is there something in my config files that I should change?
>
> Thanks
> Jeffery Soo wrote:
>> Here's my setup. I have 2 servers with the exact hardware and OS 
>> configuration.
>> Each server is also a client.  I've tried to do a "DRBD" style setup 
>> using GlusterFS.
>>
>> Let's say I have gluserfs mounted on /mnt/gluster
>>
>> On Remote 1's shell I issue this command:
>>
>> cp /mnt/gluster/test1000mbfile /mnt/gluster/test100mbfile--
>>
>> The transfer rate to Server 2 reaches about 30-40 MB/s.
>>
>> The problem is if I do this same thing on Server 2, the transfer rate 
>> to Server 1 is only about 10-15 MB/s
>> Does anyone have any idea what is causing the slow performance from 
>> Server 2 to Server 1?
>>
>> Server 2 is capable of sending at 40MB/s to Server 1 in an SCP 
>> transfer, so I've ruled out network or hardware issues.
>>
>> =====================================================
>>
>> Both servers have the same glusterfsd.vol and glusterfs.vol files:
>>
>> Client File:
>>
>> +------------------------------------------------------------------------------+ 
>>
>>  1: volume remote1
>>  2:   type protocol/client
>>  3:   option transport-type tcp
>>  4:   option remote-host xx.xx.xx.xx
>>  5:   option remote-subvolume brick
>>  6: end-volume
>>  7:
>>  8: volume remote2
>>  9:   type protocol/client
>> 10:   option transport-type tcp
>> 11:   option remote-host xx.xx.xx.xx
>>  17:   option remote-subvolume brick
>> 18: end-volume
>> 19:
>> 20: volume replicate
>> 21:   type cluster/replicate
>> 22:   subvolumes remote1 remote2
>> 23: end-volume
>> 24:
>> 25: volume writebehind
>> 26:   type performance/write-behind
>> 27:   option window-size 1MB
>> 28:   subvolumes replicate
>> 29: end-volume
>> 30:
>> 31: volume cache
>> 32:   type performance/io-cache
>> 33:   option cache-size 512MB
>> 34:   subvolumes writebehind
>> 35: end-volume
>>
>> Server
>> =================
>>  1: volume posix
>>  2:   type storage/posix
>>  3:   option directory /data/export
>>  4: end-volume
>>  5:
>>  6: volume locks
>>  7:   type features/locks
>>  8:   subvolumes posix
>>  9: end-volume
>> 10:
>> 11: volume brick
>> 12:   type performance/io-threads
>> 13:   option thread-count 8
>> 14:   subvolumes locks
>> 15: end-volume
>> 16:
>> 17: volume server
>> 18:   type protocol/server
>> 19:   option transport-type tcp
>> 20:   option auth.addr.brick.allow *
>> 21:   subvolumes brick
>> 22: end-volume
>>
>>
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>>
>
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