https://connect.hyland.com/t5/alfresco-forum/does-alfresco-just-ignore-xmx/m-p/147677#M39079 <P>In our front-end the user can set Xms and Xmx for all of the transform, ActiveMQ, Solr, and Alfresco services. They're all well-behaved, apart from Alfresco. If you set both values to 512M, for example, Alfresco will hold at about 500M for a minute or so, and then run up a Gigabyte of PSS memory. This is real memory which Linux can't claim back: it's not listed as 'available' (memavailable in /proc/meminfo) until Alfresco is stopped.</P><P>Alfresco does this even if it's doing nothing at all; it basically runs at 1.0-1.1 GB all the time.</P><P>So what's going on? I ran up an instance a few minutes ago, and 'ps' is correctly showing that I requested "-Xms500M -Xmx600M". The log includes this line:</P><PRE>2024-05-10 15:53:28,057 INFO [org.alfresco.service.descriptor.DescriptorService] [main] Alfresco JVM - v17.0.9+9; maximum heap size 533.500MB</PRE><P>but the PSS shown for this JVM process is 1.1GB. It feels very much like Alfresco is requesting hundreds of extra MBs to subvert the heap limit requests.</P> Fri, 10 May 2024 16:08:35 GMT atTheBeach 2024-05-10T16:08:35Z https://connect.hyland.com/t5/alfresco-forum/does-alfresco-just-ignore-xmx/m-p/147677#M39079 <P>In our front-end the user can set Xms and Xmx for all of the transform, ActiveMQ, Solr, and Alfresco services. They're all well-behaved, apart from Alfresco. If you set both values to 512M, for example, Alfresco will hold at about 500M for a minute or so, and then run up a Gigabyte of PSS memory. This is real memory which Linux can't claim back: it's not listed as 'available' (memavailable in /proc/meminfo) until Alfresco is stopped.</P><P>Alfresco does this even if it's doing nothing at all; it basically runs at 1.0-1.1 GB all the time.</P><P>So what's going on? I ran up an instance a few minutes ago, and 'ps' is correctly showing that I requested "-Xms500M -Xmx600M". The log includes this line:</P><PRE>2024-05-10 15:53:28,057 INFO [org.alfresco.service.descriptor.DescriptorService] [main] Alfresco JVM - v17.0.9+9; maximum heap size 533.500MB</PRE><P>but the PSS shown for this JVM process is 1.1GB. It feels very much like Alfresco is requesting hundreds of extra MBs to subvert the heap limit requests.</P> Fri, 10 May 2024 16:08:35 GMT https://connect.hyland.com/t5/alfresco-forum/does-alfresco-just-ignore-xmx/m-p/147677#M39079 atTheBeach 2024-05-10T16:08:35Z