My system definitely has a problem with load (and not only with a
display/calculation of the load value that is wrong).
Every task I do on the system takes ages. For example, "apt-get upgrade"
for linux-* 3.2.0-24.38 took ~35 minutes. In general, disk access seems
to be very slow, and if there are multiple processes running (backup,
mlocate.updatedb, or other simple but disk IO bound tasks) the system
load is easily around 8-10.
Like Rafael, I am using an encrypted LVM setup. Maybe the calculation of
the load values is not related after all?
Here's my top (someone was asking for it, no?)
top - 09:17:33 up 14 days, 13:40, 1 user, load average: 1.83, 1.93, 2.91
Tasks: 137 total, 1 running, 136 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.8%us, 0.8%sy, 0.0%ni, 73.0%id, 24.3%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2050676k total, 1814212k used, 236464k free, 318688k buffers
Swap: 1998844k total, 23252k used, 1975592k free, 1102336k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6226 root 20 0 17328 1264 908 R 2 0.1 0:00.01 top
1 root 20 0 24320 1516 680 S 0 0.1 0:01.86 init
2 root 20 0 0 0 0 S 0 0.0 0:00.26 kthreadd
3 root 20 0 0 0 0 S 0 0.0 5:37.66 ksoftirqd/0
5 root 20 0 0 0 0 S 0 0.0 0:00.62 kworker/u:0
6 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/0
7 root RT 0 0 0 0 S 0 0.0 0:04.43 watchdog/0
8 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/1
10 root 20 0 0 0 0 S 0 0.0 1:46.03 ksoftirqd/1
12 root RT 0 0 0 0 S 0 0.0 0:03.69 watchdog/1
13 root 0 -20 0 0 0 S 0 0.0 0:00.00 cpuset
14 root 0 -20 0 0 0 S 0 0.0 0:00.00 khelper
15 root 20 0 0 0 0 S 0 0.0 0:00.02 kdevtmpfs
16 root 0 -20 0 0 0 S 0 0.0 0:00.00 netns
17 root 20 0 0 0 0 S 0 0.0 0:00.00 kworker/u:1
18 root 20 0 0 0 0 S 0 0.0 0:04.53 sync_supers
19 root 20 0 0 0 0 S 0 0.0 0:00.08 bdi-default
20 root 0 -20 0 0 0 S 0 0.0 0:00.00 kintegrityd
21 root 0 -20 0 0 0 S 0 0.0 0:00.00 kblockd
22 root 0 -20 0 0 0 S 0 0.0 0:00.00 ata_sff
23 root 20 0 0 0 0 S 0 0.0 0:00.00 khubd
24 root 0 -20 0 0 0 S 0 0.0 0:00.00 md
26 root 20 0 0 0 0 S 0 0.0 0:00.88 khungtaskd
27 root 20 0 0 0 0 S 0 0.0 2:07.20 kswapd0
28 root 25 5 0 0 0 S 0 0.0 0:00.00 ksmd
29 root 39 19 0 0 0 S 0 0.0 0:00.00 khugepaged
30 root 20 0 0 0 0 S 0 0.0 0:00.01 fsnotify_mark
31 root 20 0 0 0 0 S 0 0.0 0:00.00 ecryptfs-kthrea
32 root 0 -20 0 0 0 S 0 0.0 0:00.00 crypto
40 root 0 -20 0 0 0 S 0 0.0 0:00.00 kthrotld
41 root 20 0 0 0 0 S 0 0.0 0:00.00 scsi_eh_0
42 root 20 0 0 0 0 S 0 0.0 0:00.00 scsi_eh_1
63 root 0 -20 0 0 0 S 0 0.0 0:00.00 devfreq_wq
181 root 20 0 0 0 0 S 0 0.0 0:00.00 scsi_eh_2
191 root 20 0 0 0 0 S 0 0.0 2:28.76 scsi_eh_3
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https://bugs.launchpad.net/bugs/995284
Title:
High idle load on 64bit Ubuntu 12.04 with 3.2.0-24-generic kernel
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