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CFMX High CPU utilisation
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andyt
Mar 8, 2005, 10:05:00 AM3/8/05
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We are running CFMX 6.1 on a dual Xeon server running SuSE Linux 8.2. Several
times a day, the CPU time consumed by one of the cfuson processes will increase
to about 99.9% on one CPU as reported by top. After a while another CPU joins
this at the head of the top listing with 99.9% CPU load until eventually all 4
logical CPUs are fully loaded and the server stops responding to CF page
requests. The only way out of this is to restart CF (and in fact I have a
shell script that runs every 60 seconds to see if this has happened and if so,
restarts CF). But this should not happen - nothing is logged to the CF logs
when this happens so why does it happen? If the problem is left uncorrected,
the load avarage goes up to 20+ and eventually the server crashes (or hangs,
it's hard to tell as nothing is written to the system logs). Andy
times a day, the CPU time consumed by one of the cfuson processes will increase
to about 99.9% on one CPU as reported by top. After a while another CPU joins
this at the head of the top listing with 99.9% CPU load until eventually all 4
logical CPUs are fully loaded and the server stops responding to CF page
requests. The only way out of this is to restart CF (and in fact I have a
shell script that runs every 60 seconds to see if this has happened and if so,
restarts CF). But this should not happen - nothing is logged to the CF logs
when this happens so why does it happen? If the problem is left uncorrected,
the load avarage goes up to 20+ and eventually the server crashes (or hangs,
it's hard to tell as nothing is written to the system logs). Andy
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