[Gluster-users] Poor performance with small files

[Alex Crow]

> Upgrade to 3.6.3 and set client.event-threads and server.event-threads to at least 4:
>
> "Previously, epoll thread did socket even-handling and the same thread was used for serving the client or processing the response received from the server. Due to this, other requests were in a queue untill the current epoll thread completed its operation. With multi-threaded epoll, events are distributed that improves the performance due the parallel processing of requests/responses received."
>
> Here are the guidelines for tuning them:
>
> https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/Small_File_Performance_Enhancements.html
>
> In my testing with epoll threads at 4 I saw a between a 15% and 50% increase depending on the workload.
>
> There are several smallfile perf enhancements in the works:
>
> *http://www.gluster.org/community/documentation/index.php/Features/Feature_Smallfile_Perf
>
> *Lookup unhashed is the next feature and should be ready with 3.7(correct me if I am wrong).
>
> *If you are using RAID 6 you may want to do some testing with RAID 10 or JBOD, but the benefits here only come into play with alot of concurrent access(30+ processes / threads working with different files).
>
> *Tiering may help here if you want to add some SSDs, this is also a 3.7 feature.
>
> HTH!
>
> -b
Hi,

I'm on 3.6.3 and these options are not available:

volume set: failed: option : client.event-threads does not exist
volume set: failed: option : server.event-threads does not exist

Any ideas?

Alex

-- 
This message is intended only for the addressee and may contain
confidential information. Unless you are that person, you may not
disclose its contents or use it in any way and are requested to delete
the message along with any attachments and notify us immediately.
"Transact" is operated by Integrated Financial Arrangements plc. 29
Clement's Lane, London EC4N 7AE. Tel: (020) 7608 4900 Fax: (020) 7608
5300. (Registered office: as above; Registered in England and Wales
under number: 3727592). Authorised and regulated by the Financial
Conduct Authority (entered on the Financial Services Register; no. 190856).