In cazul in care rsyslog foloseste mult procesor (100% sau mai mult) in OpenVZ, trebuie comentata linia de mai jos pentru ca, kernelul vps-urilor nu ruleaza in interiorul acestora iar rsyslog incearca fara nici un motiv, in mod constant sa citeasca /proc/kmsg producand astfel milioane de erori intr-un timp foarte scurt (de unde si consumul ridicat de CPU).

/var/log/syslog va arata ceva de genul:

Sep 16 21:47:38 server kernel: Cannot read proc file system: 1 - Operation not permitted.
Sep 16 21:48:08 server kernel: last message repeated 6125550 times
Sep 16 21:49:08 server kernel: last message repeated 13230238 times
Sep 16 21:50:08 server kernel: last message repeated 11995373 times

Pentru a rezolva problema trebuie comentata urmatoarea linie in /etc/rsyslogd.conf

$ModLoad imklog   # provides kernel logging support (previously done by rklogd)

Comentata:

#$ModLoad imklog   # provides kernel logging support (previously done by rklogd)