Re: speedup ceph / scaling / find the bottleneck

[Stefan Priebe - Profihost AG <s.priebe@profihost.ag>]

Hello,


Am 02.07.2012 22:30, schrieb Josh Durgin:
> If you add admin_socket=/path/to/admin_socket for your client running
> qemu (in that client's ceph.conf section or manually in the qemu
> command line) you can check that caching is enabled:
>
> ceph --admin-daemon /path/to/admin_socket show config | grep rbd_cache
>
> And see statistics it generates (look for cache) with:
>
> ceph --admin-daemon /path/to/admin_socket perfcounters_dump

This doesn't work for me:
ceph --admin-daemon /var/run/ceph.sock show config
read only got 0 bytes of 4 expected for response length; invalid 
command?2012-07-03 09:46:57.931821 7fa75d129700 -1 asok(0x8115a0) 
AdminSocket: request 'show config' not defined

Also perfcounters does not show anything:
# ceph --admin-daemon /var/run/ceph.sock perfcounters_dump
{}

~]# ceph -v
ceph version 0.48argonaut-2-gb576faa 
(commit:b576faa6f24356f4d3ec7205e298d58659e29c68)

Stefan