It is happens sometimes, im just working and suddenly machine starts lagging. Then it can totaly stops (Nothing works, mouse, keyboard etc.), or sometimes not.
Jun 5 16:04:12 c0rp kernel: [ 2636.897221] CPU1: Package power limit normal Jun 5 16:04:12 c0rp kernel: [ 2636.897222] CPU3: Package power limit normal Jun 5 16:04:12 c0rp kernel: [ 2636.897224] CPU2: Package power limit normal Jun 5 16:04:12 c0rp kernel: [ 2636.897225] CPU0: Package power limit normal Jun 5 16:05:01 c0rp CRON: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Jun 5 16:10:26 c0rp kernel: imklog 5.8.6, log source = /proc/kmsg started. Jun 5 16:10:26 c0rp rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="1267" x-info="http://www.rsyslog.com"] start
This is whats inside syslog quite before hard reset
(command -v debian-sa1 > /dev/null && debian-sa1 1 1) may be this is my problem?
Linux c0rp 3.8.6-030806-generic #201304051406 SMP Fri Apr 5 18:07:42 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Also just before lagging iowait are up
My laptop: Asus Zenbook UX32DV, Ubuntu 12.10 Sorry for my poor english
Edit 1: According to the jnv answer I remove sysstat package. The problem still exists, but now my computer doesn't stops totally. iowait very high, machine lagging and sometimes stops for 20-30 sec. I'm still trying to find a culprit. My hdd is healthy (Smart Data and test utility said). sometimes in iotop output there is kswapd0 causing 80-90% iowait.
Edit 2: According last jnv answer. Yesterday I upgraded my 12.10 to 13.04. Today everything was normal. No iowaits, no lagging.
I explain a little bit my configuration on laptop. My / and /boot are on SSD. Also 2 2Gb swap files on SSD. Swappiness is 10. /home on hdd. zRam is installed, i have 4 zRam partitions.
Also I ordered one 8Gb RAM, and later plan to buy 256Gb SSD and change HDD. If someone intersted here is good HOWTO article. Its in german but google can help.