[Gluster-users] glusterfs performance tuning

[bernhard glomm]

thnx for sharing André!
so in ubuntu 14.04 we can use libgfapi without recompiling qemu? 
it works just out of the box (as described in your first link)?
Regards
Bernhard



> Hi Bernhard,
> 
> i have nearly the same setup:
> - Ubuntu 14.04.
> - 4 nodes (relplicate distributed)
> - bricks are on lvm on a mdadm raid 10
> 
> used bonding (802.3ad/bond-mode 4) before but did not see real benefit
> in speed for vms. depending on what you do 1 gb might be already enough.
> nevertheless we bought 10 ge hardware now
> 
> For the vms i recommend to use libgfapi which will have better
> performance and the load of your gluster nodes will go down:
> 
> http://www.gluster.org/community/documentation/index.php/Libgfapi_with_qemu_libvirt
> 
> I also used these hints:
> http://www.gluster.org/community/documentation/index.php/Virt-store-usecase#Tunables
> 
> Whats also important:
> http://joejulian.name/blog/keeping-your-vms-from-going-read-only-when-encountering-a-ping-timeout-in-glusterfs/
> 
> Regards
> André
> 
> Am 18.12.2014 um 12:39 schrieb Bernhard Glomm:
>> hi all,
>> 
>> I'm looking for some performance tuning suggestions for glusterfs.
>> 
>> The set is:
>> - 2 server with several bricks each (ubuntu 14.04),
>> - each brick is part of a 2way-mirror between them both 
>> - both server are connected with 2 * 1GB NIC
>> - the servers also mount the gluster volumes (fuse) 
>> - each gluster volume hosts mainly a single large file (10-20GB) (VM-Image),
>>  sometimes two or three of them
>> 
>> My qustions:
>> - Which bond mode would you recommend for this set up? 
>> - what are performance parameters/values for "few large files per gluster volume"
>> - are there some performance parameters regarding the use as vm.image storage
>>   (the vms do some caching by themself?)
>> 
>> TIA
>> 
>> Bernhard
>> 
>> 
>> 
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>> 
> 
> 
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