Very high memory utilisation by ovn process threads in RHOSP13.
Issue
- We performed
ROSP13
Z stream minor upgrade on stage overcloud after that we are observing sudden surge in memory byOVN
on compute nodes. - During the spike, we see the consumption by
networking-ovn
thread constantly keeps increasing couple withovs-vswitchd
process constantly segaulting.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
39242 root 20 0 81532 32380 2924 R 99.3 0.0 1410:14 ovn-controller
39253 42435 20 0 38.2g 38.0g 7200 S 22.8 7.6 75:10.56 networking-ovn-
44227 42435 20 0 37.3g 37.0g 3188 S 21.8 7.4 60:32.52 networking-ovn-
44222 42435 20 0 37.3g 37.1g 3192 S 21.5 7.4 58:39.25 networking-ovn-
44220 42435 20 0 37.2g 37.0g 3192 S 20.8 7.4 62:15.17 networking-ovn-
44208 42435 20 0 37.3g 37.1g 3192 S 20.5 7.4 55:32.46 networking-ovn-
44218 42435 20 0 37.3g 37.1g 3188 S 19.8 7.4 57:45.08 networking-ovn-
44223 42435 20 0 37.3g 37.1g 3192 S 19.5 7.4 56:15.26 networking-ovn-
44214 42435 20 0 37.2g 37.0g 3188 S 19.1 7.4 58:24.53 networking-ovn-
44202 42435 20 0 37.3g 37.1g 3188 S 18.5 7.4 56:50.21 networking-ovn-
44212 42435 20 0 37.2g 37.0g 3192 S 18.5 7.4 55:16.42 networking-ovn-
44229 42435 20 0 37.2g 37.0g 1828 S 18.5 7.4 56:27.28 networking-ovn-
44207 42435 20 0 37.3g 37.1g 3188 S 18.2 7.4 57:10.12 networking-ovn-
44210 42435 20 0 37.3g 37.1g 3188 S 18.2 7.4 56:47.39 networking-ovn-
- Very high memory utilisation by ovn processes in RHOSP13.
Environment
- Red Hat OpenStack Platform (RHOSP) 13.0.
- Red Hat OpenStack Platform (RHOSP) 13.0 latest z release.
- OVN controller service.
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