Symptoms
Some customers have noticed multiple cpdavd children consuming 98% of the CPU and causing high load averages.
Description
Seeing process output (ps) and noticing several cpdavd connections using 98% CPU.
root 4095998 0.0 0.0 57388 39168 ? Ss Mar07 14:44 cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2058922 91.9 0.0 56680 34016 ? R Mar08 39583:44 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2050699 91.6 0.0 56680 34252 ? R Mar09 38094:22 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2244957 91.7 0.0 56680 34252 ? R Mar09 38075:20 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 470323 91.4 0.0 56680 33992 ? R Mar10 36608:35 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2275809 89.7 0.0 56812 34300 ? R Mar15 30534:37 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2297549 90.0 0.0 56812 34300 ? R Mar15 30609:27 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1539796 89.5 0.0 57076 34612 ? R Mar16 29153:48 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1867725 89.5 0.0 57076 34868 ? R Mar16 29137:09 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1884914 89.5 0.0 57076 34868 ? R Mar16 29140:31 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 815407 89.1 0.0 57076 35444 ? R Mar17 27667:41 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 914364 89.1 0.0 57076 35444 ? R Mar17 27652:13 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1031085 89.1 0.0 57076 35444 ? R Mar17 27634:13 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1054549 89.1 0.0 57076 35444 ? R Mar17 27631:33 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 820928 88.6 0.0 57208 35272 ? R Mar18 26182:35 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 999507 88.6 0.0 57344 34760 ? R Mar18 26153:43 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 4165152 88.3 0.0 57208 35016 ? R Mar19 24751:57 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 166447 88.3 0.0 57208 35016 ? R Mar19 24719:12 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2953174 87.9 0.0 57208 34760 ? R Mar20 23323:57 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2922716 86.4 0.0 56936 35524 ? R Mar23 19029:16 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 2971350 86.4 0.0 56936 35524 ? R Mar23 19019:38 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 689819 85.1 0.0 57068 35264 ? R Mar25 16162:50 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 747430 85.1 0.0 57068 35264 ? R Mar25 16151:54 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 856179 82.0 0.0 57124 35736 ? R Mar30 9413:40 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 3075727 81.4 0.0 57124 35224 ? R Mar31 8126:17 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1523061 81.5 0.0 57388 35472 ? R Apr01 6908:59 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
root 1410638 78.5 0.0 57388 35756 ? R 02:27 769:21 \_ cpdavd - accepting connections on: 2079, 2080, 2091, 2077, 2078
Previously, we had assumed it was related to an older version of OpenSSL not working properly with TLS caching. But this is also now being reported with current (newer) versions of OpenSSL.
We've opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-46615. Follow this article to receive an email notification when a solution is published in the product.
Workaround
You may safely kill the child processes with kill -9 <pid>
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