[Gluster-users] gluster write performance
mathieu.chateau at lotp.fr
Sat Jul 18 20:13:31 UTC 2015
you can try tuning your TCP settings to be more aggressives (both on 1
client and all gluster bricks) in /etc/systctl.conf:
# increase Linux autotuning TCP buffer limit to 32MB
net.ipv4.tcp_rmem="4096 87380 33554432"
net.ipv4.tcp_wmem="4096 65536 33554432"
# increase the length of the processor input queue
# recommended default congestion control is htcp
2015-07-18 22:11 GMT+02:00 Roman <romeo.r at gmail.com>:
> But when I'm inside of VM, I'm getting 50-53 MB/s for replica and 120 MB
> for distributed volumes...
> whats the logic? that slow write speed directly to mounted gfs volume
> slows down backup and restore process of VMs by VE.
> 2015-07-18 22:47 GMT+03:00 Roman <romeo.r at gmail.com>:
>> Looked a lot from forums, but didn't find much..
>> So I've got glusterfs 3.6.4
>> 1 Gbps network
>> replicate and distributed volumes
>> so when i read from any of them, I get maxed-out network performance
>> (around 80-120 MB/sec)
>> If i write to distributed volume, I get 16 MB/sec
>> If i write to replicated volume, I get around half of it (which is
>> logical) 8-10MB/sec
>> i use XFS (with all set recommended options) and EXT4 for gluster. no
>> Disks are in HW RAID5 for Distributed volume and RAID0 for Replicated
>> volume options:
>> performance.write-behind: off
>> server.allow-insecure: on
>> cluster.server-quorum-type: server
>> cluster.quorum-type: auto
>> network.remote-dio: enable
>> cluster.eager-lock: enable
>> performance.stat-prefetch: off
>> performance.io-cache: off
>> performance.read-ahead: off
>> performance.quick-read: off
>> Am I missing something?
>> Best regards,
> Best regards,
> Gluster-users mailing list
> Gluster-users at gluster.org
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