Messages per Month
17 messages in org.freebsd.freebsd-performancedecreasing interrupt CPU load| From | Sent On | Attachments |
|---|---|---|
| Oleg Gawriloff | Oct 20, 2004 5:10 am | |
| Eric Anderson | Oct 20, 2004 6:08 am | |
| Oleg Gawriloff | Oct 20, 2004 7:05 am | |
| Steven Hartland | Oct 20, 2004 8:14 am | |
| Uwe Doering | Oct 20, 2004 1:16 pm | |
| Jason Stone | Oct 20, 2004 1:34 pm | |
| Steven Hartland | Oct 20, 2004 1:37 pm | |
| Uwe Doering | Oct 20, 2004 2:08 pm | |
| Jason Stone | Oct 20, 2004 3:06 pm | |
| Lucas Holt | Oct 21, 2004 6:56 am | |
| Jason Stone | Oct 21, 2004 1:44 pm | |
| Oleg Gawriloff | Oct 22, 2004 5:31 am | |
| Steven Hartland | Oct 22, 2004 6:05 am | |
| Oleg Gawriloff | Oct 22, 2004 7:04 am | |
| Steven Hartland | Oct 22, 2004 8:56 am | |
| Steven Hartland | Oct 22, 2004 9:02 am | |
| Steven Hartland | Oct 22, 2004 9:31 am |
| Subject: | decreasing interrupt CPU load | |
|---|---|---|
| From: | Oleg Gawriloff (bar...@telecom.by) | |
| Date: | Oct 22, 2004 7:04:45 am | |
| List: | org.freebsd.freebsd-performance | |
Hello, Steven! You wrote to "Oleg Gawriloff" <bar...@telecom.by>; <free...@freebsd.org> on Fri, 22 Oct 2004 14:04:46 +0100:
When you say not working are you seeing no more that HZ interrupts per second? After compiling in you did enable it with the sysctl?
After recompiling kernel with options HZ=1000 options DEVICE_POLLING and kern.polling.enable=1 number of interrupts shown in systat -v 1 does not change (about 5k). CPU interrupt load does not changes as well. Also RTT in ping increases from 2ms to 20ms. After disabling polling RTT goes back to 2ms. So we decided that polling does not work on i82550 in SMP.
With best regards, Oleg Gawriloff.