13.2.7. Viewing List of Write Performance

You can view list of write throughput of files on each brick or nfs server. If brick name is not specified, then the metrics of all the bricks belonging to that volume will be displayed. The output will be the write throughput.

This command will initiate a write for the specified count and block size and measures the corresponding throughput directly on back-end export (bypassing glusterFS processes). To view list of write performance on each brick:

View list of write performance on each brick using the following command:

# gluster volume top VOLNAME write-perf [bs blk-size count count] [nfs | brick BRICK-NAME] [list-cnt cnt]

For example, to view write performance on brick server:/export/ of test-volume, 256 block size of count 1, and list count 10:

# gluster volume top test-volume write-perf bs 256 count 1 brick server:/export/ list-cnt 10

Brick: server:/export/dir1

256 bytes (256 B) copied, Throughput: 2.8 MB/s

# gluster volume top test-volume write-perf bs 256 count 1 brick server:/export/ list-cnt 10
Brick: server:/export/dir1 256 bytes (256 B) copied, Throughput: 2.8 MB/s
       ==========Write throughput file stats========

write                filename                 Time
throughput
(MBps)
 
1170.00    /clients/client0/~dmtmp/SEED/     -2012-05-09
           SMALL.FIL                     15:39:09.171494

1008.00    /clients/client6/~dmtmp/SEED/     -2012-05-09
           LARGE.FIL                      15:39:09.73189

949.00    /clients/client0/~dmtmp/SEED/      -2012-05-09
          MEDIUM.FIL                     15:38:36.927426

936.00   /clients/client0/~dmtmp/SEED/       -2012-05-09
         LARGE.FIL                        15:38:36.933177    
897.00   /clients/client5/~dmtmp/SEED/       -2012-05-09
         MEDIUM.FIL                       15:39:09.33628

897.00   /clients/client6/~dmtmp/SEED/       -2012-05-09
         MEDIUM.FIL                       15:39:09.27713

885.00   /clients/client0/~dmtmp/SEED/       -2012-05-09
          SMALL.FIL                      15:38:36.924271

528.00   /clients/client5/~dmtmp/SEED/       -2012-05-09
         LARGE.FIL                        15:39:09.81893

516.00   /clients/client6/~dmtmp/ACCESS/    -2012-05-09
         FASTENER.MDB                    15:39:01.797317