Example—Checking Buffer Activity
The following example of sar -b output shows that the %rcache and %wcache buffers are not causing any slowdowns. All the data is within acceptable limits.
$ sar -b SunOS touchstone 5.9 Generic sun4u 03/04/2003 00:00:00 bread/s lread/s %rcache bwrit/s lwrit/s %wcache pread/s pwrit/s 01:00:00 0 0 100 0 0 50 0 0 02:00:00 0 0 100 0 0 45 0 0 03:00:00 0 0 100 0 0 72 0 0 04:00:00 0 0 100 0 0 43 0 0 05:00:00 0 0 100 0 0 42 0 0 06:00:00 0 0 100 0 0 48 0 0 07:00:00 0 0 100 0 0 42 0 0 08:00:00 0 0 100 0 0 48 0 0 08:20:01 0 0 100 0 0 42 0 0 08:40:00 0 0 100 0 0 48 0 0 09:00:00 0 0 100 0 0 43 0 0 09:20:01 0 2 99 0 2 83 0 0 09:40:01 0 0 98 0 0 61 0 0 10:00:02 0 1 99 0 0 62 0 0 Average 0 0 99 0 0 74 0 0 |
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