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STANFORD UNIVERSITY

INFORMATION TECHNOLOGY SERVICES

AFS Connection Statistics

This report lists the number of connections on each of our AFS servers. Blocked connections are clients who are stalled waiting for an AFS server thread. Active connections are connections that were actively serving data or reading from an AFS client at the time of the report. The total connection number (not all that meaningful) is the count of clients that the AFS server is aware of (generally a count of clients that have connected to the server since its last reboot).

There should be no blocked connections. If the blocked connection number ever rises above one, the server is busier than it should be, and this may explain slow performance. (AFS administrators will be automatically paged if the blocked connection count rises too high.)

The active connection count is the best indicator of server busyness relative to other servers if there are no actual problems. We use this metric occasionally to see if the usage of servers is out of balance. Some servers will just always be busier due to the nature of the clients they server.

These statistics are updated once an hour.

Active connections:   2,610
 Total connections:  53,233
    Unique clients:   3,007

Server               Blocked  Active   Total
-------------------- ------- ------- -------
afssvr1                    0     323   4,474
afssvr2                    0     211   3,062
afssvr3                    0     150   7,070
afssvr4                    0     268   4,443
afssvr5                    0       1     692
afssvr6                    0       0   1,847
afssvr22                   0       0     380
afssvr40                   0     143   1,959
afssvr41                   0     158   3,624
afssvr42                   0     152   3,191
afssvr43                   0      81   1,465
afssvr44                   0      84   2,020
afssvr45                   0     316   5,001
afssvr46                   0     223   5,151
afssvr47                   0     236   3,954
afssvr48                   0     238   3,743
afssvr49                   0      16     664
afssvr50                   0      10     487
afssvr-dev                 0       0       6

Report generated: 2008-03-12 14:31:22 -0700
Last modified Tuesday, 05-Dec-2006 09:11:37 PM

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