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List:       sun-managers
Subject:    has anyone seen super large numbers for iostat's actv, asvc_t,
From:       Mark Inaba <minaba () nyx ! com>
Date:       2009-09-29 4:46:40
Message-ID: 6EC4D2F788465E4A9B4C7B8C802E55170211F6D148 () CHEXMBXP02 ! ad ! NYX ! com
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we get this only when sampling at 1 second. these are crazy large. the
milliseconds
work out to 48 years, and the %b should be a percentage. i've seen online
references
saying it's ok to be over 100% but the example was between 100-200, not this:

                    extended device statistics
    r/s    w/s   Mr/s   Mw/s wait actv wsvc_t asvc_t  %w  %b device
    0.0    0.0    0.0    0.0  0.0 18445426996.4    0.0    0.0   0
1844542699643 c1
    0.0    0.0    0.0    0.0  0.0 18445426738.2    0.0    0.0   0
1844542673821 c1t0d0
    0.0   12.0    0.0    0.5  0.0 18445427199.3    0.0 1537228672808.6   0
1844542719932 c2
    0.0   12.0    0.0    0.5  0.0 18445427199.3    0.0 1537228672808.6   0
1844542719932 c2t50060E80

it doesn't seem like these numbers are even possible...
well, any insights into what is going on... i'm inclined to think this is a
bug in the output, however
we do have indications of applications seeing lateness. hopefully today we'll
find out if these numbers
actually corresponds to the times the apps notice pauses.


thanks much!
-mark


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