In https://man7.org/linux/man-pages/man4/random.4.html In "/proc interfaces" section, item "poolsize", part "Linux 2.6 and later", it is said the file contains value 4096. That is not correct anymore since commit 6e8ec2552c7d ("random: use computational hash for entropy extraction") Also mentionned in https://bugzilla.kernel.org/show_bug.cgi?id=216061