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Linux I/O analyze - part 2

Posted on 2013-01-25
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Last Modified: 2013-01-26
Hi,

Could you please help me with an analyze of the following iostat values?
Are they OK or not?

Thank you!


Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.02    24.15  0.09  8.76     5.27   263.38    30.36     0.02    2.40   3.06   2.71
sda               0.13    11.62  0.23  3.09    48.46   117.73    49.97     0.02    6.35   0.41   0.14
dm-0              0.00     0.00  0.36 14.72    48.46   117.73    11.02     0.08    5.62   0.09   0.14

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00     7.80  0.00  1.60     0.00    75.20    47.00     0.01    8.50   6.75   1.08
sda               0.00    16.00  0.00  7.20     0.00   185.60    25.78     0.03    4.69   0.28   0.20
dm-0              0.00     0.00  0.00 23.20     0.00   185.60     8.00     0.09    3.95   0.09   0.20

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    10.80  0.00  3.20     0.00   112.00    35.00     0.03    7.88   5.44   1.74
sda               0.00    38.60  0.00 12.60     0.00   409.60    32.51     0.05    4.03   0.22   0.28
dm-0              0.00     0.00  0.00 51.20     0.00   409.60     8.00     0.22    4.32   0.05   0.28

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00     7.00  0.00  1.80     0.00    70.40    39.11     0.02   11.44   6.33   1.14
sda               0.00    11.00  0.00  6.20     0.00   137.60    22.19     0.03    4.29   0.26   0.16
dm-0              0.00     0.00  0.00 17.20     0.00   137.60     8.00     0.05    3.00   0.09   0.16

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    27.00  0.00 11.80     0.00   310.40    26.31     0.11    9.56   5.42   6.40
sda               0.00    38.60  0.00  8.60     0.00   377.60    43.91     0.05    6.07   0.30   0.26
dm-0              0.00     0.00  0.00 47.20     0.00   377.60     8.00     0.32    6.83   0.06   0.26

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    13.40  0.00 23.80     0.00   297.60    12.50     1.32   55.39   3.58   8.52
sda               0.00    33.20  0.00  8.20     0.00   331.20    40.39     0.04    4.32   0.22   0.18
dm-0              0.00     0.00  0.00 41.40     0.00   331.20     8.00     0.21    5.02   0.04   0.18

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    23.00  0.00 15.20     0.00   305.60    20.11     0.22   14.67   4.92   7.48
sda               0.00    35.40  0.00 11.60     0.00   376.00    32.41     0.06    4.95   0.26   0.30
dm-0              0.00     0.00  0.00 47.00     0.00   376.00     8.00     0.30    6.37   0.06   0.30

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    95.40  0.00 22.40     0.00   942.40    42.07     0.45   19.88   3.03   6.78
sda               0.00    35.00  0.00  8.40     0.00   347.20    41.33     0.05    6.10   0.31   0.26
dm-0              0.00     0.00  0.00 43.40     0.00   347.20     8.00     0.28    6.41   0.06   0.26

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    20.76  0.00  4.39     0.00   201.20    45.82     0.06   13.09   4.68   2.06
sda               0.00    53.49  0.00 12.77     0.00   530.14    41.50     0.05    4.08   0.22   0.28
dm-0              0.00     0.00  0.00 66.27     0.00   530.14     8.00     0.28    4.22   0.04   0.28

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00     8.80  0.00  1.20     0.00    80.00    66.67     0.01    8.67   8.67   1.04
sda               0.00    15.60  0.00  7.40     0.00   184.00    24.86     0.03    3.38   0.27   0.20
dm-0              0.00     0.00  0.00 23.00     0.00   184.00     8.00     0.06    2.77   0.09   0.20

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    25.60  0.00 10.40     0.00   288.00    27.69     0.13   12.52   3.75   3.90
sda               0.00    38.40  0.00  8.40     0.00   374.40    44.57     0.04    4.81   0.24   0.20
dm-0              0.00     0.00  0.00 46.80     0.00   374.40     8.00     0.23    4.94   0.04   0.20

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00     8.40  0.00  7.20     0.00   124.80    17.33     0.05    7.25   6.75   4.86
sda               0.00    43.60  0.00  8.40     0.00   416.00    49.52     0.05    6.07   0.31   0.26
dm-0              0.00     0.00  0.00 52.00     0.00   416.00     8.00     0.32    6.15   0.05   0.26

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    12.00  0.00 24.60     0.00   292.80    11.90     1.51   61.34   3.79   9.32
sda               0.00    36.20  0.00  8.40     0.00   356.80    42.48     0.05    5.57   0.31   0.26
dm-0              0.00     0.00  0.00 44.60     0.00   356.80     8.00     0.30    6.68   0.06   0.26

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    61.80  0.00 20.40     0.00   657.60    32.24     0.34   16.58   4.38   8.94
sda               0.00    29.60  0.00 12.60     0.00   337.60    26.79     0.07    5.46   0.27   0.34
dm-0              0.00     0.00  0.00 42.20     0.00   337.60     8.00     0.26    6.12   0.08   0.34

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    39.00  0.00  8.20     0.00   377.60    46.05     0.15   18.29   3.20   2.62
sda               0.00    36.80  0.00  8.00     0.00   358.40    44.80     0.04    4.40   0.30   0.24
dm-0              0.00     0.00  0.00 44.80     0.00   358.40     8.00     0.22    4.84   0.05   0.24

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    29.80  0.00  6.40     0.00   289.60    45.25     0.12   18.81   4.00   2.56
sda               0.00    51.40  0.00 13.00     0.00   515.20    39.63     0.07    5.48   0.29   0.38
dm-0              0.00     0.00  0.00 64.40     0.00   515.20     8.00     0.42    6.56   0.06   0.38

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    13.60  0.00  3.00     0.00   132.80    44.27     0.03   10.67   5.27   1.58
sda               0.00    21.20  0.00  7.40     0.00   228.80    30.92     0.03    3.95   0.35   0.26
dm-0              0.00     0.00  0.00 28.60     0.00   228.80     8.00     0.12    4.10   0.09   0.26

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    18.76  0.00  9.58     0.00   226.75    23.67     0.09    8.94   5.29   5.07
sda               0.00    47.50  0.00 13.17     0.00   485.43    36.85     0.05    4.00   0.21   0.28
dm-0              0.00     0.00  0.00 60.68     0.00   485.43     8.00     0.27    4.45   0.05   0.28

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    11.20  0.00  9.00     0.00   161.60    17.96     0.09    9.56   6.13   5.52
sda               0.00    15.60  0.00  7.00     0.00   180.80    25.83     0.04    6.00   0.31   0.22
dm-0              0.00     0.00  0.00 22.60     0.00   180.80     8.00     0.11    5.05   0.10   0.22

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    15.40  0.00 22.00     0.00   299.20    13.60     0.77   35.07   4.39   9.66
sda               0.00    38.60  0.00  8.40     0.00   376.00    44.76     0.05    6.10   0.29   0.24
dm-0              0.00     0.00  0.00 47.00     0.00   376.00     8.00     0.32    6.84   0.05   0.24

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
cciss/c0d0        0.00    80.60  0.00 21.20     0.00   814.40    38.42     0.51   24.27   3.48   7.38
sda               0.00    28.00  0.00  8.40     0.00   291.20    34.67     0.04    4.31   0.26   0.22
dm-0              0.00     0.00  0.00 36.40     0.00   291.20     8.00     0.17    4.55   0.06   0.22

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Question by:g0all
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un1x86 earned 500 total points
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Here the same thing. What exactly do you need to analyse? The number also very depends on what you are looking for. Write speed? Then you would need to tell what disks are attached.

Is your system idling?
High runqueues?

Please provide more detailed information.
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by:g0all
ID: 38821722
I will return additional information.
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