Slab memory leak on Ubuntu Xenial stemcells
Article ID: 293847
Updated On:
Products
Operations Manager
Issue/Introduction
This issue has been observed on TAS and TKGi environment utilizing Ubuntu Xenial stemcell versions 621.241 and higher.
This issue may result in intermittent unresponsive VM's. This problem has not been seen on all TAS and TKGi foundations but rather only ones with certain characteristics (BOSH add-ons, specific application workloads).
/proc/meminfo shows low free memory and high amount of Slab memory.
slabtop command shows high amount of memory usage by TCP.
This issue may result in intermittent unresponsive VM's. This problem has not been seen on all TAS and TKGi foundations but rather only ones with certain characteristics (BOSH add-ons, specific application workloads).
/proc/meminfo shows low free memory and high amount of Slab memory.
slabtop command shows high amount of memory usage by TCP.
Environment
Product Version: 2.10
Resolution
Canonical has released a fix in the Ubuntu kernel v4.15.0-197.208 . From changelog https://www.ubuntuupdates.org/package/core/bionic/main/updates/linux-source-4.15.0:
Ubuntu Xenial stemcell 621.330 includes the Ubuntu kernel v4.15.0-197
https://docs.pivotal.io/stemcells/stemcells.html#621-line
Memory leak while using NFQUEUE to delegate the decision on TCP packets to
userspace processes (LP: #1991774)
- SAUCE: netfilter: nf_queue: Fix memory leak in nf_queue_entry_get_refs
Ubuntu Xenial stemcell 621.330 includes the Ubuntu kernel v4.15.0-197
https://docs.pivotal.io/stemcells/stemcells.html#621-line
Feedback
Yes
No
Powered by
