diff options
| author | Lennart Poettering <lennart@poettering.net> | 2011-08-21 00:28:30 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2011-08-21 20:07:45 +0200 |
| commit | 94959f0fa0c19ae1db0e63d9a5dfc94c660825ba (patch) | |
| tree | 22733bd2908d5001892f454cb786c279cd538e1f /man | |
| parent | 9e37286844f67ca7c59e923dd27ad193dfdda7eb (diff) | |
exec: allow passing arbitrary path names to blkio cgroup attributes
If a device node is specified, then adjust the bandwidth/weight of it,
otherwise find the backing block device of the file system the path
refers to and adjust its bandwidth/weight.
Diffstat (limited to 'man')
| -rw-r--r-- | man/systemd.exec.xml | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml index 6bc8bf3e79..ce6833b843 100644 --- a/man/systemd.exec.xml +++ b/man/systemd.exec.xml @@ -859,10 +859,15 @@ processes. Takes either a single weight value (between 10 and 1000) to set the default block IO weight, or a - space separated pair of a device node - path and a weight value to specify the + space separated pair of a file path + and a weight value to specify the device specific weight value (Example: - "/dev/sda 500"). This controls the + "/dev/sda 500"). The file path may be + specified as path to a block device + node or as any other file in which + case the backing block device of the + file system of the file is + determined. This controls the <literal>blkio.weight</literal> and <literal>blkio.weight_device</literal> control group attributes, which @@ -879,17 +884,22 @@ <term><varname>BlockIOWriteBandwidth=</varname></term> <listitem><para>Set the per-device - overall block IO bandwith limit for the - executed processes. Takes a space - separated pair of a device node path - and a bandwith value (in bytes per - second) to specify the device specific - bandwidth. If the bandwith is suffixed - with K, M, G, or T the specified - bandwith is parsed as Kilobytes, - Megabytes, Gigabytes, resp. Terabytes - (Example: "/dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0 5M"). This - controls the + overall block IO bandwith limit for + the executed processes. Takes a space + separated pair of a file path and a + bandwith value (in bytes per second) + to specify the device specific + bandwidth. The file path may be + specified as path to a block device + node or as any other file in which + case the backing block device of the + file system of the file is determined. + If the bandwith is suffixed with K, M, + G, or T the specified bandwith is + parsed as Kilobytes, Megabytes, + Gigabytes, resp. Terabytes (Example: + "/dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0 + 5M"). This controls the <literal>blkio.read_bps_device</literal> and <literal>blkio.write_bps_device</literal> |