[Bugs] [Bug 1370092] VERY poor replica write perfomance

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1370092



--- Comment #3 from Badalyan Vyacheslav <v.badalyan at open-bs.ru> ---
Brick: intel2:/mnt/ram/b1
-------------------------
Cumulative Stats:
   Block Size:             131072b+
 No. of Reads:                   40
No. of Writes:                28672
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us              8     RELEASE
      0.00       0.00 us       0.00 us       0.00 us              6  RELEASEDIR
      0.00       2.83 us       1.00 us       8.00 us              6     OPENDIR
      0.00      19.43 us      14.00 us      25.00 us              7       FLUSH
      0.00      35.50 us      22.00 us      46.00 us              4      STATFS
      0.01      63.86 us      48.00 us     101.00 us              7 REMOVEXATTR
      0.02      45.06 us      11.00 us     129.00 us             16    GETXATTR
      0.03     102.88 us      77.00 us     123.00 us              8        OPEN
      0.05      73.84 us      33.00 us     131.00 us             19       FSTAT
      0.05      26.52 us      13.00 us      91.00 us             58    FINODELK
      0.07     128.56 us     103.00 us     166.00 us             16     XATTROP
      0.11     280.33 us     123.00 us     945.00 us             12     READDIR
      0.16     118.03 us      33.00 us    2967.00 us             40        READ
      0.48     141.82 us      38.00 us     458.00 us            102    FXATTROP
      0.91     555.98 us       6.00 us   21644.00 us             50      LOOKUP
      5.09      18.80 us      11.00 us    1050.00 us           8228     INODELK
     15.93   69172.43 us   65170.00 us   84091.00 us              7    TRUNCATE
     77.09      81.75 us      56.00 us    5169.00 us          28672       WRITE

    Duration: 126 seconds
   Data Read: 5242880 bytes
Data Written: 3758096384 bytes

Interval 1 Stats:
   Block Size:             131072b+
 No. of Reads:                    0
No. of Writes:                20480
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us              5     RELEASE
      0.00      17.60 us      14.00 us      21.00 us              5       FLUSH
      0.01      58.80 us      48.00 us      79.00 us              5 REMOVEXATTR
      0.02      97.80 us      77.00 us     116.00 us              5        OPEN
      0.04      39.10 us      19.00 us      66.00 us             20     INODELK
      0.05      74.71 us      38.00 us     119.00 us             14       FSTAT
      0.05      26.93 us      13.00 us      91.00 us             42    FINODELK
      0.06     124.50 us     103.00 us     162.00 us             10     XATTROP
      0.06     129.80 us      77.00 us     190.00 us             10      LOOKUP
      0.54     148.45 us      38.00 us     458.00 us             76    FXATTROP
     16.84   70477.40 us   65170.00 us   84091.00 us              5    TRUNCATE
     82.32      84.12 us      59.00 us    5169.00 us          20480       WRITE

    Duration: 68 seconds
   Data Read: 0 bytes
Data Written: 2684354560 bytes

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