[php-maint] Bug#741254: Bug#741254: php5-common: use of fuser in cron.d/php5 eats up a lot of cpu time, need backporting

[Ondřej Surý]

Control: severity -1 wishlist
Control: tags -1 +wontfix

On Mon, Mar 10, 2014, at 14:01, Paolo Benvenuto wrote:
> Package: php5-common
> Version: 5.4.4-14+deb7u8
> Severity: normal
> 
> /etc/cron.d/php5 in 5.4.4 uses fuser in order to delete old session files
> in /var/lib/php5. According to user reports, using fuser isn't the best
> solution. In particulare it leads to fuser eating up a significant amount
> of cpu time if web server used intensively.
> 
> On my server I backported the solution of 5.5.9+dfsg-1, importing
> /usr/lib/php5/sessionclean and /usr/libe/php5/maxlifetime from 5.5.9, and
> changed /etc/cron.d/php5 as in 5.5.9, see my configuration file reported
> above.
> 
> As a result, now cpu usage is far less intensive: system cpu time use has
> reduced by one order of magnitude!
> 
> I think the solution used in 5.5.9 can be backported producing a new
> version of 5.4.4
> 
> 
> -- System Information:
> Debian Release: 7.4
>   APT prefers stable
>   APT policy: (650, 'stable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 3.2.0-4-amd64 (SMP w/12 CPU cores)
> Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> 
> Versions of packages php5-common depends on:
> ii  dpkg    1.16.12
> ii  libc6   2.17-7
> ii  psmisc  22.19-1+deb7u1
> ii  sed     4.2.1-10
> ii  ucf     3.0025+nmu3
> 
> php5-common recommends no packages.
> 
> php5-common suggests no packages.
> 
> -- Configuration Files:
> /etc/cron.d/php5 changed:
> 
> 09,39 *     * * *     root   [ -x /usr/lib/php5/maxlifetime ] && [ -x
> /usr/lib/php5/sessionclean ] && [ -d /var/lib/php5 ] &&
> /usr/lib/php5/sessionclean /var/lib/php5 $(/usr/lib/php5/maxlifetime)
> 
> 
> -- no debconf information
> 
> _______________________________________________
> pkg-php-maint mailing list
> pkg-php-maint at lists.alioth.debian.org
> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-php-maint


-- 
Ondřej Surý <ondrej at sury.org>
Knot DNS (https://www.knot-dns.cz/) – a high-performance DNS server