Have I mentioned how much I love graphs?
Performance on the IMAP server had been getting progressively worse following a recent Cyrus upgrade. A periodic maintenence job on the IMAP server was taking an increasing amount of time to run, and was driving the system load progressively higher. One-minute load averages of over 70 were starting to show up with regularity, and the problem was getting more and more noticable.
A fix was eventually found. Can you guess when it was put in place?
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http://people.csail.mit.edu/noahm/blosxom.cgi/imap-server-load.trackback
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