Forum Discussion
NimbostratusHigh memory utillzation on F5 Viprion 2400 model
Hi all,
we have 2 viprion box and from one viprion, we have participate 3 LTM. All of them showing memory utilization high ( like total physical memory 5.5G, OS used memory 5.4 G and TMM is 4.0 G) how to fix the issue and what action we need to take for further.
6 Replies
Hannes_RappAre you sure it's a problem? You're probably looking at memory allocation, not memory utilization.
Try the following:
[bigip-01:Changes Pending] ~ free -m total used free shared buffers cached Mem: 16077 16010 66 0 365 4079 -/+ buffers/cache: 11566 4510From the command above, it looks as if nearly 100% memory is used but in reality only 11566 MB out of 16077 MB are allocated to buffers. That's about 72% true memory usage and not 100%
Vijay_1982_1648yes I have checked that free -m total - 5679 used - 5595 free - 84 swap - total - 1023,used - 91, free - 932. so in the case we need to increase physical memory, if so please suggested how to do that.- Hannes_RappCan you add a new blade? That perhaps may be the easiest option. Your other options come down to configuration optimization (less memory allocation for caching, reduction of idle timeout values etc.). If you run your LTMs as vCMP guests, you may be able to just allocate more memory from the pool of physical memory that is available. For that, the Guest must be shut down, and new provisioning must be made on the Host system. This may help you get started: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/vcmp_admin_11_0_0/7.html
Hannes_Rapp_162Nacreous
Are you sure it's a problem? You're probably looking at memory allocation, not memory utilization.
Try the following:
[bigip-01:Changes Pending] ~ free -m total used free shared buffers cached Mem: 16077 16010 66 0 365 4079 -/+ buffers/cache: 11566 4510From the command above, it looks as if nearly 100% memory is used but in reality only 11566 MB out of 16077 MB are allocated to buffers. That's about 72% true memory usage and not 100%
- Vijay_1982_1648yes I have checked that free -m total - 5679 used - 5595 free - 84 swap - total - 1023,used - 91, free - 932. so in the case we need to increase physical memory, if so please suggested how to do that.
- Hannes_Rapp_162Can you add a new blade? That perhaps may be the easiest option. Your other options come down to configuration optimization (less memory allocation for caching, reduction of idle timeout values etc.). If you run your LTMs as vCMP guests, you may be able to just allocate more memory from the pool of physical memory that is available. For that, the Guest must be shut down, and new provisioning must be made on the Host system. This may help you get started: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/vcmp_admin_11_0_0/7.html
