[Gluster-devel] Slow fs

Emmanuel Dreyfus manu at netbsd.org
Sat Nov 9 16:06:45 UTC 2013


Hi

On 3.4.1, I had a crash server side because of system limit (heap size). I
restarted, and now the fs is extremely slow.

Here are profile info. Any hint of where is the issue?

silo# gluster volume profile gfs341 info 
Brick: silo:/export/wd2a
------------------------
Cumulative Stats:
   Block Size:                  1b+                   2b+                   4b+
 No. of Reads:                    0                     0                     0
No. of Writes:                  119                    89                   207
 
   Block Size:                  8b+                  16b+                  32b+
 No. of Reads:                    5                     5                     6
No. of Writes:                 2685                 20559                 26884
 
   Block Size:                 64b+                 128b+                 256b+
 No. of Reads:                  183                   440                   333
No. of Writes:                16666                 22414                 26828
 
   Block Size:                512b+                1024b+                2048b+
 No. of Reads:                  162                    87                    86
No. of Writes:                47158                 39862                 46764
 
   Block Size:               4096b+                8192b+               16384b+
 No. of Reads:                  454                   454                   740
No. of Writes:                22016                 14543                  9947
 
   Block Size:              32768b+               65536b+              131072b+
 No. of Reads:                 1897                  5631                209278
No. of Writes:                12471                  3710                   197
 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us         279478      FORGET
      0.00       0.00 us       0.00 us       0.00 us         267232     RELEASE
      0.00       0.00 us       0.00 us       0.00 us          28625  RELEASEDIR
      0.00      47.67 us      28.00 us      61.00 us              3        STAT
      0.00     106.33 us      92.00 us     133.00 us              3    TRUNCATE
      0.00      62.33 us      53.00 us      68.00 us              6       WRITE
      0.00      97.50 us      65.00 us     124.00 us              4       FSTAT
      0.00      81.78 us      46.00 us     109.00 us              9   FTRUNCATE
      0.00     101.38 us      27.00 us     451.00 us              8      STATFS
      0.00     242.00 us     158.00 us     321.00 us              5     READDIR
      0.00    1501.00 us    1501.00 us    1501.00 us              1    SETXATTR
      0.00     531.67 us      49.00 us    1483.00 us              3        OPEN
      0.03    3865.83 us    1687.00 us   11607.00 us              6       FSYNC
      0.06   16270.00 us    6346.00 us   36005.00 us              3      RENAME
      0.18    5054.03 us    2822.00 us   22519.00 us             30    FXATTROP
      0.23   39790.00 us   21818.00 us   89369.00 us              5      CREATE
      0.25    6793.66 us      19.00 us  215339.00 us             32    FINODELK
      0.35    2506.14 us     114.00 us  168464.00 us            120        READ
      0.43   61041.83 us    3273.00 us  239458.00 us              6     XATTROP
      3.07   17162.43 us      51.00 us  431101.00 us            153     SETATTR
      8.95   45045.94 us      30.00 us 2065080.00 us            170    GETXATTR
     10.82   31385.63 us      17.00 us 2941755.00 us            295     ENTRYLK
     16.73   14315.53 us      17.00 us 2502697.00 us           1000     INODELK
     58.89   14729.58 us      86.00 us 3603064.00 us           3420      LOOKUP
 
    Duration: 561493 seconds
   Data Read: 28085570022 bytes
Data Written: 1503297110 bytes
 
Interval 3 Stats:
   Block Size:                512b+              131072b+ 
 No. of Reads:                    0                    40 
No. of Writes:                    2                     0 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us              1      FORGET
      0.00       0.00 us       0.00 us       0.00 us              3     RELEASE
      0.00      61.00 us      61.00 us      61.00 us              1        STAT
      0.00      63.00 us      63.00 us      63.00 us              1        OPEN
      0.00      94.00 us      94.00 us      94.00 us              1    TRUNCATE
      0.00      62.50 us      61.00 us      64.00 us              2       WRITE
      0.00      68.00 us      44.00 us      92.00 us              2      STATFS
      0.00      86.33 us      46.00 us     109.00 us              3   FTRUNCATE
      0.00      30.80 us      23.00 us      41.00 us             10    FINODELK
      0.00     184.00 us     158.00 us     210.00 us              2     READDIR
      0.00      97.50 us      65.00 us     124.00 us              4       FSTAT
      0.03    2557.00 us    1691.00 us    3423.00 us              2       FSYNC
      0.03    6346.00 us    6346.00 us    6346.00 us              1      RENAME
      0.03     166.03 us     121.00 us     278.00 us             40        READ
      0.09    8913.00 us    3273.00 us   14553.00 us              2     XATTROP
      0.24    4524.00 us    2895.00 us   10112.00 us             10    FXATTROP
      0.60   57210.50 us   25052.00 us   89369.00 us              2      CREATE
      2.86   11905.35 us      57.00 us  190800.00 us             46     SETATTR
      6.60   19771.62 us     396.00 us  608832.00 us             64    GETXATTR
      9.39   13431.40 us      19.00 us  971690.00 us            134     ENTRYLK
     11.96    6496.44 us      17.00 us  950230.00 us            353     INODELK
     68.17   14177.33 us      94.00 us 1380707.00 us            922      LOOKUP
 
    Duration: 28 seconds
   Data Read: 5242880 bytes
Data Written: 1800 bytes
 
Brick: debacle:/export/wd1a
---------------------------
Cumulative Stats:
   Block Size:                  1b+                   4b+                   8b+
 No. of Reads:                    0                     3                    54
No. of Writes:                    1                     0                     4
 
   Block Size:                 16b+                  32b+                  64b+
 No. of Reads:                 1125                  1277                   837
No. of Writes:                    6                     7                    18
 
   Block Size:                128b+                 256b+                 512b+
 No. of Reads:                  944                  1177                  1707
No. of Writes:                   31                    79                   121
 
   Block Size:               1024b+                2048b+                4096b+
 No. of Reads:                 1436                  3085                  1828
No. of Writes:                  281                   596                   317
 
   Block Size:               8192b+               16384b+               32768b+
 No. of Reads:                  983                  3788                   461
No. of Writes:                  289                   504                  4091
 
   Block Size:              65536b+              131072b+ 
 No. of Reads:                44771                 50582 
No. of Writes:                 2242                   159 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us         288178      FORGET
      0.00       0.00 us       0.00 us       0.00 us         276611     RELEASE
      0.00       0.00 us       0.00 us       0.00 us          29662  RELEASEDIR
      0.00      65.50 us      30.00 us     101.00 us              2        STAT
      0.00      65.00 us      38.00 us     115.00 us              3        OPEN
      0.00      47.62 us      24.00 us     106.00 us              8      STATFS
      0.00      53.88 us      32.00 us      72.00 us              8   FTRUNCATE
      0.00      26.56 us      10.00 us      84.00 us             18    FINODELK
      0.00      24.23 us       8.00 us      63.00 us             22     ENTRYLK
      0.00     212.00 us     189.00 us     229.00 us              5       FSYNC
      0.01    2144.00 us    2144.00 us    2144.00 us              1     READDIR
      0.01      84.46 us      73.00 us     121.00 us             37        READ
      0.03     215.22 us      44.00 us    6190.00 us             37       FSTAT
      0.09    7455.00 us    2237.00 us   13052.00 us              3      RENAME
      0.23   19000.33 us      62.00 us   56797.00 us              3    TRUNCATE
      0.47   19886.67 us    1217.00 us   75636.00 us              6     XATTROP
      0.50     833.23 us      40.00 us   66927.00 us            151     SETATTR
      0.77    4586.33 us      27.00 us  115632.00 us             42    GETXATTR
      0.91   14307.44 us    1107.00 us  107253.00 us             16    FXATTROP
      2.06  103694.20 us   14683.00 us  447120.00 us              5      CREATE
     12.50    2043.20 us       9.00 us 1030204.00 us           1540     INODELK
     82.41    3470.41 us      76.00 us  998615.00 us           5976      LOOKUP
 
    Duration: 561508 seconds
   Data Read: 11439890349 bytes
Data Written: 393336122 bytes
 
Interval 3 Stats:
   Block Size:              65536b+ 
 No. of Reads:                   11 
No. of Writes:                    0 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us              1      FORGET
      0.00       0.00 us       0.00 us       0.00 us              3     RELEASE
      0.00      30.00 us      30.00 us      30.00 us              1        STAT
      0.00      37.50 us      26.00 us      49.00 us              2      STATFS
      0.00     115.00 us     115.00 us     115.00 us              1        OPEN
      0.01      17.12 us      12.00 us      23.00 us              8     ENTRYLK
      0.01     142.00 us     142.00 us     142.00 us              1    TRUNCATE
      0.01      56.67 us      39.00 us      69.00 us              3   FTRUNCATE
      0.01      32.43 us      13.00 us      84.00 us              7    FINODELK
      0.02     209.00 us     189.00 us     229.00 us              2       FSYNC
      0.02      48.73 us      48.00 us      51.00 us             11       FSTAT
      0.04      84.09 us      76.00 us     117.00 us             11        READ
      0.56   13052.00 us   13052.00 us   13052.00 us              1      RENAME
      1.59   18707.50 us   14683.00 us   22732.00 us              2      CREATE
      2.14     172.60 us      12.00 us   23403.00 us            291     INODELK
      3.28   38566.50 us    1497.00 us   75636.00 us              2     XATTROP
      4.19   16414.83 us    1176.00 us   85980.00 us              6    FXATTROP
      5.02    2619.51 us      45.00 us   66927.00 us             45     SETATTR
     83.10    1549.53 us      80.00 us  171269.00 us           1260      LOOKUP
 
    Duration: 27 seconds
   Data Read: 1146101 bytes
Data Written: 0 bytes
 
Brick: hangar:/export/wd3a
--------------------------
Cumulative Stats:
   Block Size:                  1b+                   4b+                   8b+
 No. of Reads:                    0                     0                     0
No. of Writes:                    1                     3                    58
 
   Block Size:                 16b+                  32b+                  64b+
 No. of Reads:                    1                     0                     0
No. of Writes:                 1130                  1284                   855
 
   Block Size:                128b+                 256b+                 512b+
 No. of Reads:                    0                     0                     0
No. of Writes:                  975                  1256                  1827
 
   Block Size:               1024b+                2048b+                4096b+
 No. of Reads:                    3                     3                    32
No. of Writes:                 1716                  3677                  2110
 
   Block Size:               8192b+               16384b+               32768b+
 No. of Reads:                   25                   166                   141
No. of Writes:                 1248                  1042                  4118
 
   Block Size:              65536b+              131072b+ 
 No. of Reads:                  904                132762 
No. of Writes:                 2293                   341 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us         289743      FORGET
      0.00       0.00 us       0.00 us       0.00 us         276611     RELEASE
      0.00       0.00 us       0.00 us       0.00 us          29662  RELEASEDIR
      0.00     127.67 us     103.00 us     150.00 us              3    TRUNCATE
      0.00      80.00 us      42.00 us     127.00 us              8   FTRUNCATE
      0.00     276.00 us      78.00 us     800.00 us              4       FSTAT
      0.00     550.00 us      69.00 us    1512.00 us              3        OPEN
      0.00     174.13 us     121.00 us     258.00 us             15     READDIR
      0.00     155.94 us      21.00 us    1508.00 us             18    FINODELK
      0.03   15207.67 us    6407.00 us   32591.00 us              3      RENAME
      0.03    9230.33 us    2991.00 us   26321.00 us              6     XATTROP
      0.07    1779.54 us     150.00 us   33052.00 us             67        READ
      0.29   65312.50 us      38.00 us  226590.00 us              8      STATFS
      0.30  106863.80 us   25134.00 us  403476.00 us              5      CREATE
      0.69   77226.81 us    2748.00 us  773357.00 us             16    FXATTROP
      0.71  255734.60 us     334.00 us 1032546.00 us              5       FSYNC
      1.52   18027.92 us      51.00 us  863671.00 us            151     SETATTR
      3.85   12032.38 us      40.00 us 2023922.00 us            574    GETXATTR
     11.50   21288.11 us      15.00 us 4791081.00 us            969     ENTRYLK
     23.47   16990.93 us      18.00 us 3870756.00 us           2479     INODELK
     57.55   22760.43 us      94.00 us 4753189.00 us           4537      LOOKUP
 
    Duration: 561502 seconds
   Data Read: 17497120878 bytes
Data Written: 470443381 bytes
 
Interval 3 Stats:
   Block Size:             131072b+ 
 No. of Reads:                   24 
No. of Writes:                    0 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us              1      FORGET
      0.00       0.00 us       0.00 us       0.00 us              3     RELEASE
      0.00      69.00 us      69.00 us      69.00 us              1        OPEN
      0.00      51.00 us      38.00 us      64.00 us              2      STATFS
      0.00     150.00 us     150.00 us     150.00 us              1    TRUNCATE
      0.00      88.33 us      42.00 us     127.00 us              3   FTRUNCATE
      0.00     200.33 us     143.00 us     254.00 us              3     READDIR
      0.00     276.00 us      78.00 us     800.00 us              4       FSTAT
      0.00     346.14 us      24.00 us    1508.00 us              7    FINODELK
      0.01    6407.00 us    6407.00 us    6407.00 us              1      RENAME
      0.03    9475.00 us    5680.00 us   13270.00 us              2     XATTROP
      0.11    2800.33 us     154.00 us   19781.00 us             24        READ
      0.41  122646.00 us     610.00 us  244682.00 us              2       FSYNC
      0.67   66579.33 us    2976.00 us  368832.00 us              6    FXATTROP
      0.72  214305.00 us   25134.00 us  403476.00 us              2      CREATE
      1.57   20415.13 us      53.00 us  863671.00 us             46     SETATTR
      7.13   43065.32 us     380.00 us 2023922.00 us             99    GETXATTR
     17.08   57053.73 us      21.00 us 4791081.00 us            179     ENTRYLK
     19.27   24833.95 us      18.00 us 1721894.00 us            464     INODELK
     52.99   31373.74 us      99.00 us 4753189.00 us           1010      LOOKUP
 
    Duration: 27 seconds
   Data Read: 3145728 bytes
Data Written: 0 bytes
 
Brick: hangar:/export/wd1a
--------------------------
Cumulative Stats:
   Block Size:                  1b+                   2b+                   4b+
 No. of Reads:                    0                     1                     1
No. of Writes:                  119                    89                   206
 
   Block Size:                  8b+                  16b+                  32b+
 No. of Reads:                   18                   456                   638
No. of Writes:                 2674                 20109                 26254
 
   Block Size:                 64b+                 128b+                 256b+
 No. of Reads:                  653                  1114                  1047
No. of Writes:                16225                 21757                 26094
 
   Block Size:                512b+                1024b+                2048b+
 No. of Reads:                  815                   445                  1022
No. of Writes:                46483                 39502                 45837
 
   Block Size:               4096b+                8192b+               16384b+
 No. of Reads:                 1188                  2113                   808
No. of Writes:                21375                 14211                  9791
 
   Block Size:              32768b+               65536b+              131072b+
 No. of Reads:                  528                  6478                153851
No. of Writes:                12407                  3688                   153
 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us         278772      FORGET
      0.00       0.00 us       0.00 us       0.00 us         267233     RELEASE
      0.00       0.00 us       0.00 us       0.00 us          28625  RELEASEDIR
      0.00      66.60 us      59.00 us      79.00 us              5       WRITE
      0.00    1908.00 us    1908.00 us    1908.00 us              1     READDIR
      0.01    1413.71 us      35.00 us    9513.00 us              7      STATFS
      0.01    4227.67 us      63.00 us   12551.00 us              3        OPEN
      0.01    4651.33 us      75.00 us   13710.00 us              3    TRUNCATE
      0.01     416.73 us      14.00 us    8592.00 us             37       FSTAT
      0.02   19443.00 us   19443.00 us   19443.00 us              1    SETXATTR
      0.02    4094.20 us    1650.00 us    9259.00 us              5       FSYNC
      0.03    4631.62 us      42.00 us   36533.00 us              8   FTRUNCATE
      0.05    1433.56 us      35.00 us   48945.00 us             36    READLINK
      0.13   24155.33 us    5373.00 us   83746.00 us              6     XATTROP
      0.14    5630.43 us      21.00 us   74418.00 us             28    FINODELK
      0.15   32752.40 us   26251.00 us   40382.00 us              5      CREATE
      0.19   69616.33 us    5391.00 us  188134.00 us              3      RENAME
      0.19    2929.67 us     151.00 us   66289.00 us             72        READ
      0.28   11943.19 us    2855.00 us   95080.00 us             26    FXATTROP
      0.95    7093.66 us      53.00 us  418369.00 us            151     SETATTR
      1.50   76999.59 us      17.00 us 1692792.00 us             22     ENTRYLK
      3.39   88812.86 us      32.00 us 1730394.00 us             43    GETXATTR
     23.83   37513.31 us      17.00 us 4552377.00 us            716     INODELK
     69.10   20612.44 us      88.00 us 5304073.00 us           3778      LOOKUP
 
    Duration: 561502 seconds
   Data Read: 20818299002 bytes
Data Written: 1477574380 bytes
 
Interval 3 Stats:
   Block Size:                512b+              131072b+ 
 No. of Reads:                    0                    24 
No. of Writes:                    2                     0 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us              1      FORGET
      0.00       0.00 us       0.00 us       0.00 us              3     RELEASE
      0.00      69.00 us      69.00 us      69.00 us              1        OPEN
      0.00      62.00 us      39.00 us      85.00 us              2      STATFS
      0.00      64.00 us      59.00 us      69.00 us              2       WRITE
      0.00     169.00 us     169.00 us     169.00 us              1    TRUNCATE
      0.00      76.00 us      52.00 us     100.00 us              3   FTRUNCATE
      0.00     139.11 us      39.00 us     509.00 us              9    READLINK
      0.01    2932.50 us    1751.00 us    4114.00 us              2       FSYNC
      0.03    6897.50 us    5373.00 us    8422.00 us              2     XATTROP
      0.04    1268.91 us      14.00 us    8592.00 us             11       FSTAT
      0.14    5535.10 us    2905.00 us   13880.00 us             10    FXATTROP
      0.15   29488.00 us   26251.00 us   32725.00 us              2      CREATE
      0.25    4117.08 us     151.00 us   38975.00 us             24        READ
      0.29   11564.40 us      22.00 us   74418.00 us             10    FINODELK
      0.47  188134.00 us  188134.00 us  188134.00 us              1      RENAME
      2.40   20793.83 us      53.00 us  418369.00 us             46     SETATTR
      4.25  211640.62 us      17.00 us 1692792.00 us              8     ENTRYLK
      4.41  439321.25 us     640.00 us 1730394.00 us              4    GETXATTR
     24.88   43685.58 us      20.00 us 2885874.00 us            227     INODELK
     62.67   22440.90 us     108.00 us 2617203.00 us           1113      LOOKUP
 
    Duration: 27 seconds
   Data Read: 3145728 bytes
Data Written: 1800 bytes

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu at netbsd.org




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