On Freitag, 21. April 2006 00:22 Lee Revell wrote: > I asked about the app because I was wondering whether he had a server > or a desktop. It's all servers. The Hz rate can change over time: Mar 3 02:04:41 baum kernel: rtc: lost some interrupts at 256Hz. Mar 3 02:04:53 baum kernel: rtc: lost some interrupts at 256Hz. Mar 3 02:04:55 baum kernel: rtc: lost some interrupts at 256Hz. Mar 3 02:38:19 baum kernel: rtc: lost some interrupts at 256Hz. Mar 3 02:42:22 baum kernel: rtc: lost some interrupts at 256Hz. Mar 16 15:53:50 baum kernel: rtc: lost some interrupts at 2048Hz. Mar 16 15:54:01 baum kernel: rtc: lost some interrupts at 2048Hz. Mar 16 16:29:33 baum kernel: rtc: lost some interrupts at 2048Hz. Mar 29 23:01:36 baum kernel: warning: many lost ticks. Interesting may be the fact that VMware runs on at least some hosts. I didn't check if all servers have it, but I found a good article on vmware support: http://www.vmware.com/support/kb/enduser/std_adp.php?p_sid=tthOqz5i&p_lva=&p_faqid=1420&p_created=1093994398&p_sp=cF9zcmNoPTEmcF9ncmlkc29ydD0mcF9yb3dfY250PTE3JnBfc2VhcmNoX3RleHQ9bG9zdCBzb21lIGludGVycnJ1cHRzJnBfc2VhcmNoX3R5cGU9NyZwX3Byb2RfbHZsMT1_YW55fiZwX3Byb2RfbHZsMj1_YW55fiZwX3NvcnRfYnk9ZGZsdCZwX3BhZ2U9MQ**&p_li= So as a summary: - Lee Revell said changing preemption model from server to voluntary or preemption could help - increasing HZ on the vm-host, decreasing in the vm-clients should help, according to VMware support It would be good if this information is spread on the support lists, I saw that question a lot. Also, a short text under Documentation in the kernel source could be nice, explaining why this happens and what to do then. I will try the suggestion from the vmware support link I posted above, and will report back. mfg zmi -- // Michael Monnerie, Ing.BSc ----- http://it-management.at // Tel: 0660/4156531 .network.your.ideas. // PGP Key: "lynx -source http://zmi.at/zmi3.asc | gpg --import" // Fingerprint: 44A3 C1EC B71E C71A B4C2 9AA6 C818 847C 55CB A4EE // Keyserver: www.keyserver.net Key-ID: 0x55CBA4EE
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