Re: alternative approaches to CEPH-FS

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On 11/18/2013 01:19 AM, YIP Wai Peng wrote:
> Hi Dima,
> 
> Benchmark FYI.
> 
> $ /usr/sbin/bonnie++ -s 0 -n 5:1m:4k
> Version  1.97      ------Sequential Create------ --------Random Create--------
> altair              -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>      5:1048576:4096    18   1   609  11   604   9    18   1   436  10   686  9
> Latency              1187ms   70907us     261ms    2352ms     205ms    111ms

Is this on an FS on RBD on the NFS server, mounted and exported? I get

> Version  1.96       ------Sequential Create------ --------Random Create--------
> nautilus            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>      5:1048576:4096    19   1  5422  99   123   2    41   3  4525  99   127   2
> Latency             86381us     746us   44125us     303ms     746us   60720us

on an ext4 filesystem mounted on top of DRBD device backed by an LSI
raid (10, battery-backed) on the main node and an mdadm raid-0 on the
passive node. This is on the server with he FS exported and mounted (but
not getting much use -- I ran it after hours). On a client & during
working hours I get

> Version  1.96       ------Sequential Create------ --------Random Create--------
> stingray            -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>      5:1048576:4096     3   0  1952  29  1385  13     2   0  1553  18   575   5
> Latency              16383ms   19662us    153ms    8482ms    1935us    4467ms

--
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu

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