Gentoo Archives: gentoo-user

From: Alex Schuster <wonko@×××××××××.org>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] 100% CPU usage with no processes to blame?
Date: Fri, 16 Feb 2007 22:58:32
Message-Id: 200702162353.44206.wonko@wonkology.org
In Reply to: Re: [gentoo-user] 100% CPU usage with no processes to blame? by Grant
1 Grant writes:
2
3 > Shouldn't top have provided some kind of info for why the CPU usage
4 > was 100% for 5 minutes straight? If it does display trends, shouldn't
5 > it have picked up on that one?
6
7 I bet it was updatedb. This is what top shows me when it is running:
8
9 Cpu(s): 15.6% us, 12.6% sy, 0.3% ni, 0.0% id, 70.2% wa, 1.3% hi, 0.0% si
10 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11 1563 root 18 0 1936 928 528 R 8.9 0.2 0:09.68 updatedb
12
13 Whatever this "wa" entry is, probably something with I/O related waiting,
14 it seems is it not being taken into account for the %CPU culumn entry of the
15 process.
16
17 I think whis was different with kernel 2.4, it did not show such a high
18 load, while performing similar as now when updatedb was running.
19
20 Alex
21 --
22 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] 100% CPU usage with no processes to blame? Alan McKinnon <alan@××××××××××××××××.za>