topic Re: memory utilization causes in Firewall and Security Management

memory utilization causes

umar7 — Mon, 26 Dec 2022 02:28:58 GMT

HI support,

what are the possibilities for the high memory in devices?

what is the first aid for the device ?

what are the commands to verify the high memory?

it will affect the SMS and SG ?

Re: memory utilization causes

Blason_R — Mon, 26 Dec 2022 02:41:59 GMT

There are multiple possibilities for high memory - Like heavy traffic, Heavy connections, not properly fine tuned system or rules. Bug in that specific build or memory leak - You are recommended to always check and see the release notes for hotfix which is currently installed on firewall or mgmt

To identify the root cause there are multiple commands you can use and the most I prefer

top (Any zombie processes/High Utilized processes)

free -m (Swap memory)
top -c
cat /proc/meminfo
vmstat -s
fw ctl pstat
ps auxww
sar -r

Re: memory utilization causes

the_rock — Mon, 26 Dec 2022 02:43:53 GMT

@Blason_R gave you more commands I was going to give, so please follow what he provided.

Re: memory utilization causes

Chris_Atkinson — Mon, 26 Dec 2022 05:20:13 GMT

Does the memory utilization track with your connection table?

What appliance do you have and how much memory is it installed with?

cpview may also be useful here.

Re: memory utilization causes

Timothy_Hall — Mon, 26 Dec 2022 15:29:30 GMT

Need to see free -m output, the "high memory utilization" you see is likely used for buffering/caching to improve the disk I/O performance of the firewall, and does not necessarily indicate a problem or shortage of memory.