[Gluster-users] GlusterFS performance

[John Smith]

crap i messed up the cut n paste... nevermind...

the summary: dd 'local' to 'local' vs cp 'local' to 'glusterfs', on
the same machine: local was seconds faster.

- John Smith

On Thu, May 23, 2013 at 4:40 PM, John Smith <lbalbalba at gmail.com> wrote:
> For what its worth : This is what I get in a 1CPU 2GBRAM Vmware guest
> VM thats running on my desktop. '/tmp' is a 'local' xfs lvm2 fs, and
> '/mnt/glusterfs/0/' is a glusterfs mountpoint, where servernode and
> clientnode are the same vm. Not blazingly fast as its a vm on a
> desktop, but noticably slower than doing a comparable 'cp' on a
> non-glusterfs mountpoint.
>
> - John Smith
>
>
> # gluster volume profile patchy start
> Starting volume profile on patchy has been successful
> [root at host1 glusterfs]# dd if=/dev/zero of=/tmp/1GB bs=1GB count=1
> 1+0 records in
> 1+0 records out
> 1000000000 bytes (1.0 GB) copied, 12.7146 s, 78.6 MB/s
> # time cp /tmp/1GB /tmp/1GB.1
>
> real    0m17.574s
> user    0m0.014s
> sys     0m6.142s
> # time cp /tmp/1GB /mnt/glusterfs/0/
>
> real    0m24.628s
> user    0m0.019s
> sys     0m7.736s
> [root at host1 glusterfs]# gluster volume profile patchy info
> Brick: host1.localdomain:/d/backends/patchy
> -------------------------------------------
> Cumulative Stats:
>    Block Size:              32768b+              131072b+              262144b+
>  No. of Reads:                    0                     0                     0
> No. of Writes:                    1                  7625                     2
>
>  %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
>  ---------   -----------   -----------   -----------   ------------        ----
>       0.00       0.00 us       0.00 us       0.00 us              1     RELEASE
>       0.00       0.00 us       0.00 us       0.00 us              1  RELEASEDIR
>       0.00      58.00 us      56.00 us      60.00 us              2      STATFS
>       0.00     177.00 us     177.00 us     177.00 us              1       FLUSH
>       0.01     793.00 us     793.00 us     793.00 us              1      CREATE
>       0.01     127.22 us      45.00 us     394.00 us              9      LOOKUP
>      99.98    1292.19 us     177.00 us  200453.00 us           7628       WRITE
>
>     Duration: 76 seconds
>    Data Read: 0 bytes
> Data Written: 1000000000 bytes
>
> Interval 0 Stats:
>    Block Size:              32768b+              131072b+              262144b+
>  No. of Reads:                    0                     0                     0
> No. of Writes:                    1                  7625                     2
>
>  %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
>  ---------   -----------   -----------   -----------   ------------        ----
>       0.00       0.00 us       0.00 us       0.00 us              1     RELEASE
>       0.00       0.00 us       0.00 us       0.00 us              1  RELEASEDIR
>       0.00      58.00 us      56.00 us      60.00 us              2      STATFS
>       0.00     177.00 us     177.00 us     177.00 us              1       FLUSH
>       0.01     793.00 us     793.00 us     793.00 us              1      CREATE
>       0.01     127.22 us      45.00 us     394.00 us              9      LOOKUP
>      99.98    1292.19 us     177.00 us  200453.00 us           7628       WRITE
>
>     Duration: 76 seconds
>    Data Read: 0 bytes
> Data Written: 1000000000 bytes