]>
Commit | Line | Data |
---|---|---|
c87b9c60 PM |
1 | #!/bin/bash |
2 | # | |
3 | # Get an estimate of how CPU-hoggy to be. | |
4 | # | |
5 | # Usage: cpus2use.sh | |
6 | # | |
7 | # This program is free software; you can redistribute it and/or modify | |
8 | # it under the terms of the GNU General Public License as published by | |
9 | # the Free Software Foundation; either version 2 of the License, or | |
10 | # (at your option) any later version. | |
11 | # | |
12 | # This program is distributed in the hope that it will be useful, | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | # GNU General Public License for more details. | |
16 | # | |
17 | # You should have received a copy of the GNU General Public License | |
0e342a87 PM |
18 | # along with this program; if not, you can access it online at |
19 | # http://www.gnu.org/licenses/gpl-2.0.html. | |
c87b9c60 PM |
20 | # |
21 | # Copyright (C) IBM Corporation, 2013 | |
22 | # | |
23 | # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com> | |
24 | ||
25 | ncpus=`grep '^processor' /proc/cpuinfo | wc -l` | |
26 | idlecpus=`mpstat | tail -1 | \ | |
94162c8d | 27 | awk -v ncpus=$ncpus '{ print ncpus * ($7 + $NF) / 100 }'` |
c87b9c60 PM |
28 | awk -v ncpus=$ncpus -v idlecpus=$idlecpus < /dev/null ' |
29 | BEGIN { | |
30 | cpus2use = idlecpus; | |
31 | if (cpus2use < 1) | |
32 | cpus2use = 1; | |
33 | if (cpus2use < ncpus / 10) | |
34 | cpus2use = ncpus / 10; | |
35 | if (cpus2use == int(cpus2use)) | |
36 | cpus2use = int(cpus2use) | |
37 | else | |
38 | cpus2use = int(cpus2use) + 1 | |
39 | print cpus2use; | |
40 | }' | |
41 |