Package: prelink Version: 0.0.20071009-1 Severity: wishlist
The attached patch suggests how to introduce I/O idle scheduling, by tuning the CFQ scheduler (available since kernel 2.6.13) through the ionice utility provided by the util-linux package (schedutils in Ubuntu). Thanks! -- a.m. System Information: Debian Release: lenny/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: i386 (i686) Kernel: Linux 2.6.23.1 Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages prelink depends on: ii libc6 2.6.1-6 GNU C Library: Shared libraries ii libelfg0 0.8.6-4 an ELF object file access library ii libselinux1 2.0.15-2+b1 SELinux shared libraries prelink recommends no packages. -- no debconf information
--- debian/prelink.cron.daily 2007-10-28 20:51:12.000000000 +0100 +++ /etc/cron.daily/prelink 2007-10-28 20:53:42.000000000 +0100 @@ -1,7 +1,21 @@ #!/bin/bash +# Read default configuration . /etc/default/prelink +# +# Set the task to run with "idle" I/O priority if possible +# Linux supports io scheduling priorities and classes since +# 2.6.13 with the CFQ io scheduler +# + +if [ -f /usr/bin/ionice ]; then + ionice -c3 -p $$ +fi + +# +# Further lower the load in a more traditional way +# renice +19 -p $$ >/dev/null 2>&1 # Default action. Won't do anything. Bug#231007.
