Date: Mon, 15 Nov 2010 10:55:24 -0500 From: Mike Tancsa <mike@sentex.net> To: freebsd-stable@freebsd.org Subject: interrupt resource clean up Message-ID: <4CE157EC.6010007@sentex.net>
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While trying to debug an issue with an em nic, I noticed that if I unload the kld which previously had the nic using multiple msi interrupts, and then load it with msix disabled, vmstat -i shows some funny output e.g. before interrupt total rate irq4: uart0 37945 0 irq16: siis0 90443357 55 irq18: arcmsr0 138839249 84 irq19: bge0 twa0 4642943 2 irq21: ehci0 11565862 7 irq23: ehci1 3279942 2 cpu0: timer 3279559638 2000 irq256: em0 1609329648 981 irq257: em1:rx 0 756066703 461 irq258: em1:tx 0 595711018 363 irq259: em1:link 41186 0 irq260: ahci0 94752814 57 cpu1: timer 3279552436 2000 cpu3: timer 3279552195 2000 cpu2: timer 3279550937 2000 Total 16422925873 10015 and after # vmstat -i interrupt total rate irq4: uart0 42144 0 irq16: siis0 93796258 54 irq18: arcmsr0 144244159 83 irq19: bge0 twa0 4840729 2 irq21: ehci0 12015466 6 irq23: ehci1 3436876 2 cpu0: timer 3436486096 2000 irq256: em0 1719107713 1000 irq257: em1 767271792 446 irq258: 605077993 352 irq259: 41186 0 irq260: ahci0 98454608 57 cpu1: timer 3436478875 2000 cpu3: timer 3436478653 2000 cpu2: timer 3436477132 2000 Total 17194249680 10007 Is this just a display issue, or are the resources still allocated ? ---Mike
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