Re: [RadosGW] Performance for Concurrency Connections

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On Wed, Sep 11, 2013 at 10:37 PM, Kuo Hugo <tonytkdk@xxxxxxxxx> wrote:
> Yes. I restart it by /etc/init.d/radosgw for times before.  :D
>
> btw, I check several things here to prevent any permission issue.
>
> root@p01:/var/run# /etc/init.d/radosgw start
> Starting client.radosgw.gateway...
> root@p01:/var/run# ps aux | grep rados
> root     25823  1.8  0.0 16436340 7096 ?       Ssl  22:30   0:00
> /usr/bin/radosgw -n client.radosgw.gateway
> root     26055  0.0  0.0   9384   920 pts/0    S+   22:30   0:00 grep
> --color=auto rados
> root@p01:/var/run# ls ceph/
> root@p01:/var/run# ls -ald ceph/
> drwxrwxrwx 2 root root 40 Sep  9 07:47 ceph/
>
>
> apparently, the radosgw is running by root. For safety, I change the mode of
> /var/run/ceph to fully opened.
> Still no luck with radosgw admin socket stuff.
>
> One more thing about the performance is that performance down to 20~30% once
> run out of memory to cache inode. A quick reference number is 1KB object
> uploading test.
> The performance from 1200reqs/sec --> 300reqs/sec.  That's a potential issue
> which I observed.  Any way to work around would be great.
>
>

You can try disabling the rgw cache. We just found out an issue with
it so it may be interesting to see how the system behaves without it:

rgw cache enabled = false

Yehuda
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