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nextcloud: switch PHP-FPM to dynamic mode and add max_requests to recycle stale workers (#7969)

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Simon L.
2026-04-20 15:38:55 +02:00
committed by GitHub
parent 091fb8e814 66236c1a2e
commit 7bae058dbe
1 changed files with 20 additions and 5 deletions
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@@ -244,12 +244,27 @@ RUN set -ex; \
imagemagick-tiff \
coreutils; \
\
grep -q '^pm = dynamic' /usr/local/etc/php-fpm.d/www.conf; \
sed -i 's/^pm = dynamic/pm = ondemand/' /usr/local/etc/php-fpm.d/www.conf; \
# Sync this with max db connections and MaxRequestWorkers
# We don't actually expect so many children but don't want to limit it artificially because people will report issues otherwise.
# Also children will usually be terminated again after the process is done due to the ondemand setting
# Use dynamic pm mode: spare workers stay alive between requests so every request is served immediately
# without waiting for a new process to spawn (unlike ondemand which forks on every request when idle).
# pm.max_children: upper bound on worker processes; synced with max DB connections and MaxRequestWorkers.
# Set high so users never hit an artificial limit under peak load — spare-server bounds keep idle memory usage low.
sed -i 's/^pm.max_children =.*/pm.max_children = 5000/' /usr/local/etc/php-fpm.d/www.conf; \
# pm.start_servers: number of workers pre-forked at container startup.
# Having 2 workers ready immediately means the first requests after boot are served without any spawn delay.
sed -i '/^;pm.start_servers/s/^;//' /usr/local/etc/php-fpm.d/www.conf; \
sed -i 's/^pm.start_servers =.*/pm.start_servers = 2/' /usr/local/etc/php-fpm.d/www.conf; \
# pm.min_spare_servers: floor of idle workers kept alive at all times.
# Guarantees at least 1 ready worker so a sudden burst of requests is handled without any fork wait.
sed -i '/^;pm.min_spare_servers/s/^;//' /usr/local/etc/php-fpm.d/www.conf; \
sed -i 's/^pm.min_spare_servers =.*/pm.min_spare_servers = 1/' /usr/local/etc/php-fpm.d/www.conf; \
# pm.max_spare_servers: ceiling of idle workers kept alive during quiet periods.
# Capping at 3 limits idle memory consumption while still keeping a small ready pool.
sed -i '/^;pm.max_spare_servers/s/^;//' /usr/local/etc/php-fpm.d/www.conf; \
sed -i 's/^pm.max_spare_servers =.*/pm.max_spare_servers = 3/' /usr/local/etc/php-fpm.d/www.conf; \
# pm.max_requests: recycle each worker after handling 500 requests.
# PHP extensions and apps can leak memory over time; recycling prevents those leaks from accumulating indefinitely.
sed -i '/^;pm.max_requests/s/^;//' /usr/local/etc/php-fpm.d/www.conf; \
sed -i 's/^pm.max_requests =.*/pm.max_requests = 500/' /usr/local/etc/php-fpm.d/www.conf; \
sed -i 's|access.log = /proc/self/fd/2|access.log = /proc/self/fd/1|' /usr/local/etc/php-fpm.d/docker.conf; \
\
echo "[ -n \"\$TERM\" ] && [ -f /root.motd ] && cat /root.motd" >> /root/.bashrc; \