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
