Hi ogmp,

The snippet of log showed concerns a situation which is already heavily affected by a severe lack of memory.
In order to try to figure out the origin of the issue, we should check the preceding part of the log, and in particular the lines of LightstreamerMonitorText.
It must be understood if the trend of the fields "Total heap" and "free heap" is proportional to the load that the server was experiencing at that time or if some external cause, a memory leak, compromises the amount of memory available to the server.

Please could you confirm the Lightstreamer version in use and if you have customized the script launch

Code:
set JAVA_OPTS=-server -XX:MaxGCPauseMillis=1000
Regards,
Giuseppe