Thanks Peter. I've checked the performance history but there is very little
running on the box, and CPU is usually 99% idle. There is also 8GB of RAM on
here, and usually 6GB free.
Ed.
Have you monitored your server during that time to work out what is the
rate-limiter? On UNIX, 'vmstat 5' is a good (if terse) choice; on
Windows, performance monitor and look for %CPU, memory pages per second,
and disk I/O.
My own guess, based on nothing at all, is that other processes (backup,
AV scans, ...) running overnight have caused the Java VM running Tomcat
to be paged out and that your machine's taking a long time to page
everything back in. But I wouldn't put money on it.
- Peter
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