Date: Tue, 26 Jun 2007 16:58:40 -0500 From: JD Bronson <jbronson@sixcompanies.com> To: freebsd-questions@freebsd.org Subject: device polling on 6.2-stable..use? yes/no? Message-ID: <200706262158.l5QLwe7x003949@cheyenne.sixcompanies.com>
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Anyone using device polling on 6.2stable (i386) ? I have been reading up on this and seen some good and some bad but nothing definitive. I have bge NICs in these machines and they are running as routers, and running pf. When I enabled it in the kernel and then via rc.conf (since sysctl use is depreciated now) ...I can see a difference in "vmstat -i" presuming thats the correct way to check. With polling DISABLED...vmstat shows ever increasing values for example: vmstat -i interrupt total rate irq4: sio0 3 0 irq6: fdc0 10 0 irq14: ata0 12210 0 irq15: ata1 78834 2 irq22: bge0 430416 11 irq23: bge1 917826 24 cpu0: timer 75098549 2000 cpu1: timer 75092636 1999 Total 151630484 4038 and when I do a large network operation (like ftp an ISO) it increases and increases....however, with device polling compiled and configured (all default values though in sysctl) - I do not see an increase in vmstat numbers for the nics...I figured thats good...but I might be wrong? I dont do anything higher than WAN(10MB) and LAN(100MB). But if anyone has any suggestions or comments -especially values to adjust in sysctl, please chime in. TIA -JD
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