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Excessive IO caused by systemd-journald

Hacker News·Excessive IO caused by systemd-journald·about 1 month ago
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systemd version the issue has been seen with 257.9 Used distribution Debian 13 Linux kernel version used 6.12.57+deb13-amd64 Component systemd-journald Expected behaviour you didn't see Log writes should be within order of magnitude of syslog Unexpected behaviour you saw VM doing ~50 IOPS when writing 2 lines of log per second Steps to reproduce the problem this is exactly same issue #15292 that was closed without good reason Step 1. Use journald in mode where it writes to hard drive. The FS is XFS Step 2. have constant stream of log entries going on a VM Jan 03 13:37:01 cthylla haproxy[727]: 192.168.1.1:48550 [03/Jan/2026:13:37:01.392] f_www b_icinga/web 0/0/0/6/6 302 153 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.0" Jan 03 13:37:03 cthylla haproxy[727]: 192.168.1.1:36892 [03/Jan/2026:13:37:03.403] f_www b_icinga/web 0/0/0/7/7 302 153 - - ---- 2/2/0/0/0 0/0 "GET / HTTP/1.0" Jan 03 13:37:05 cthylla haproxy[727]: 192.168.1.1:36904 [03/Jan/2026:13:37:05.416] f_www b_icinga/web 0/0/0/6/6 302 153 - - ---- 2/2/0/0/0…

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