Editing ReiserFS (section)

==Performance==
Compared with [[ext2]] and [[ext3]] in version 2.4 of the Linux kernel, when dealing with files under 4&nbsp;[[KiB]] and with tail packing enabled, ReiserFS may be faster.<ref>{{cite web |title=PHP Manual |url=http://php.net/manual/en/function.session-save-path.php |website=php.net |publisher=The PHP Group |access-date=5 December 2018}}</ref>

Before Linux 2.6.33,<ref>{{cite web|url=https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8ebc423238341b52912c7295b045a32477b33f0 |title=kill-the-BKL |website= git.kernel.org}}</ref> ReiserFS heavily used the [[Giant lock#Linux|big kernel lock]] (BKL)—a global kernel-wide lock—which does not scale well for systems with multiple cores,<ref name="mahoney-proposal">{{cite web |author = Jeff Mahoney |url=http://article.gmane.org/gmane.linux.suse.opensuse.devel/4312 | date = 2006-09-14 | title = Proposal: Change in Default FS for Releases >= 10.2 | access-date = 2009-08-23 | website = gmane.org }}.</ref> as the critical code parts are only ever executed by one core at a time.