13.2.6. Viewing List of Read Performance

You can view the read throughput of files on each brick. 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 read throughput.
This command will initiate a read for the specified count and block size and measures the corresponding throughput directly on the back-end export (bypassing glusterFS processes).
To view list of read performance on each brick
  • View list of read performance on each brick using the following command:
    # gluster volume top VOLNAME read-perf [bs blk-size count count] [nfs | brick BRICK-NAME] [list-cnt cnt]
    For example, to view read performance on brick server:/export/ of test-volume, 256 block size of count 1, and list count 10:
    # gluster volume top test-volume read-perf bs 256 count 1 brick server:/export/ list-cnt 10
    Brick: server:/export/dir1 256 bytes (256 B) copied, Throughput: 4.1 MB/s 
           ==========Read throughput file stats========
    
    read         filename                         Time
    through
    put(MBp
    s)
    
    2912.00   /clients/client0/~dmtmp/PWRPNT/    -2012-05-09
               TRIDOTS.POT                   15:38:36.896486
                                               
    2570.00   /clients/client0/~dmtmp/PWRPNT/    -2012-05-09
               PCBENCHM.PPT                  15:38:39.815310
                                               
    2383.00   /clients/client2/~dmtmp/SEED/      -2012-05-09
               MEDIUM.FIL                    15:52:53.631499
                                               
    2340.00   /clients/client0/~dmtmp/SEED/      -2012-05-09
               MEDIUM.FIL                    15:38:36.926198
    
    2299.00   /clients/client0/~dmtmp/SEED/      -2012-05-09
               LARGE.FIL                     15:38:36.930445
                                                          
    2259.00  /clients/client0/~dmtmp/PARADOX/    -2012-05-09
              COURSES.X04                    15:38:40.549919
                                               
    2221.00  /clients/client9/~dmtmp/PARADOX/    -2012-05-09
              STUDENTS.VAL                   15:52:53.298766
                                               
    2221.00  /clients/client8/~dmtmp/PARADOX/    -2012-05-09
             COURSES.DB                      15:39:11.776780
                                               
    2184.00  /clients/client3/~dmtmp/SEED/       -2012-05-09
              MEDIUM.FIL                     15:39:10.251764
                                               
    2184.00  /clients/client5/~dmtmp/WORD/       -2012-05-09
             BASEMACH.DOC                    15:39:09.336572