Edge memory alert: The datapath mempool usage for malloc_heap has reached X%

Products

• VMware NSX

Issue/Introduction

• Log lines similar to the below are encountered on the NSX Manager in /var/log/syslog

NSX 6665 FABRIC [nsx@6876 comp="nsx-edge" subcomp="datapathd" s2comp="stats" tname="stats21" level="INFO"] rte malloc_heap socket 0: free 255113792 size 4294967296 mempool 2515015040
NSX 6665 FABRIC [nsx@6876 comp="nsx-edge" subcomp="datapathd" s2comp="stats" tname="stats21" level="INFO"] rte malloc_heap socket 0: free 255113792 size 4294967296 mempool 2515015040

• The Edge may have been deployed with a Medium, Large or X-Large form factor.
• The number of vCPUs on the Edge was manually increased. For example, from 4 vCPUs to 8 vCPUs
• Since the vCPU change, the memory consumption on the edge has increased leading to memory exhaustion.

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Environment

VMware NSX
VMware NSX-T Data Center

Resolution

Manually adjusting the resources on an existing NSX Edge is not supported. To increase Edge resources please see the following KB 383091

Additional Information

If this article did not help resolve your issue, you can review the following article for further information about Edge Datapath mempool usage high alarm