> Date: Tue, 8 Oct 2002 23:22:19 +0300 > From: Petri Riihikallio <[EMAIL PROTECTED]> > > >Use vmstat -i to get a list of interrupt sources on your system and > >use rndcontrol to add them to the entropy engine. > > This is very interesting. I have just guessed my entropy interrupts. > Thanks for the tip! > > ># vmstat -i > >interrupt total rate > >ata0 irq14 3240348 10 > >ata1 irq15 4 0 > >mux irq11 1342389 4 > >pcm0 irq10 3401 0 > >fdc0 irq6 2 0 > >atkbd0 irq1 58469 0 > >psm0 irq12 872780 2 > >sio0 irq4 441098 1 > >clk irq0 31225225 99 > >rtc irq8 39970907 128 > >Total 77154623 247 > > ... but what does the 'mux' stand for? My laptop shows it, too. From > the context I guess it is network activity, but there is no such > device or kernel option. The NICs don't show up as themselves. man > vmstat didn't tell.
"mux" is the device name given to all devices using the shared PCI interrupt. On most laptops all PCMCIA cards as well as the PCMCIA controller(s) and USB controllers use a single interrupt (unless this is disabled by sysctl). So this device covers anything you plug into a PCMCIA slot and anything in a mini-PCI slot on most laptops or the PCI on most desktops. You can usually track down what uses it by scanning the dmesg output. On my Dell desktop I see the graphics card, the Ethernet, and one USB all use IRQ 11 and are included in the mux device. R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: [EMAIL PROTECTED] Phone: +1 510 486-8634 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-questions" in the body of the message
