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MQSeries.net Forum Index » WebSphere Application Server » MQ 8 memory issue

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sharonv
PostPosted: Sun Dec 24, 2017 5:26 am    Post subject: MQ 8 memory issue Reply with quote

Apprentice

Joined: 03 Feb 2011
Posts: 27

Hi
we have an mq dedicated server . MQ 8005 with linux RHAT ENT 7.4
this runs on a VM machine with 4 GB ram memory
We use linear logs
Soon after installing the MQ 8005 we started to receive alerts from our monitor system regarding memory exceeding 80 %
i checked our recorded data and noticed that the physical memory builds up and on 3am it it partially cleared by our delete mq log job

i checked also the virtual memory and there i found that MQ uses far more virtual memory then the physical one , and it keeps building up for a week
till the virtual memory maxes and then it is cleaned

i compared this behavior with a physical machine and saw the memory is cleaned often and not reaching any limits

i also compared performance between this server and the old one ( 7.5 with same memory) and the mq8805 seems to do better slightly
so this is not effecting the performance

Does anyone encountered this behavior ? what can i do about it ?

Thanks
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