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

Products

• VMware NSX

Issue/Introduction

• Edge syslog shows the following

/var/log/syslog
<TIMESTAMP>  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
<TIMESTAMP> 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.

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