So I'm looking into a complaint from a client about there server
getting unresponsive when their students all login in the morning. I
used sar -r to get today's (I'm assuming) historyical data and grabbed
this pieces from around their start time:

06:20:01 AM kbmemfree kbmemused  %memused kbbuffers  kbcached
kbcommit   %commit
07:40:01 AM  [masked]  [masked]     70.15   [masked]  [masked]
[masked]     22.06
07:50:01 AM  [masked]  [masked]     70.78   [masked]  [masked]
[masked]     22.59
08:00:01 AM  [masked]  [masked]     82.64   [masked]  [masked]
[masked]     46.48
08:10:01 AM   [masked]  [masked]     97.39   [masked]  [masked]
[masked]     78.18
08:20:01 AM   [masked]  [masked]     97.69   [masked]  [masked]
[masked]     79.13
08:30:01 AM   [masked]  [masked]     97.49   [masked]  [masked]
[masked]     79.31
08:40:01 AM  [masked]  [masked]     66.84   [masked]  [masked]
[masked]     36.08
08:50:01 AM  [masked]  [masked]     66.71   [masked]  [masked]
[masked]     35.88
09:00:01 AM  [masked]  [masked]     67.05   [masked]  [masked]
[masked]     36.19
09:10:01 AM   [masked]  [masked]     90.19   [masked]  [masked]
[masked]     77.57
09:20:01 AM   [masked]  [masked]     96.24   [masked]  [masked]
[masked]     79.69
09:30:01 AM   [masked]  [masked]     96.51   [masked]  [masked]
[masked]     80.24
09:40:01 AM   [masked]  [masked]     95.68   [masked]  [masked]
[masked]     80.07
09:50:01 AM  [masked]  [masked]     72.85   [masked]  [masked]
[masked]     44.01
10:00:01 AM   [masked]  [masked]     93.51   [masked]  [masked]
[masked]     77.35
10:10:01 AM  [masked]  [masked]     82.61   [masked]  [masked]
[masked]     59.71
10:20:01 AM   [masked]  [masked]     94.83   [masked]  [masked]
[masked]     79.12
10:30:02 AM  [masked]  [masked]     64.34   [masked]  [masked]
[masked]     35.98
10:40:01 AM  [masked]  [masked]     64.60   [masked]  [masked]
[masked]     36.01
10:50:01 AM  [masked]  [masked]     64.81   [masked]  [masked]
[masked]     36.04

So I'm looking at the memused column and I can see it's sitting in the
90% used range. Would you read this that it's using up to much memory
and getting unresponsive because of it? I just want to make sure that
I'm reading this correctly.

MS

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