new em-driver still broken
scottl at samsco.org
Sat Oct 28 15:21:10 UTC 2006
Mikhail Teterin wrote:
> On Saturday 21 October 2006 13:33, Gleb Smirnoff wrote:
> = We aren't currently speaking about performance, we need to know whether
> = kernel with DEVICE_POLLING option makes NIC work stable.
> Having noticed today's em-driver update, I rebuilt world/kernel and tried the
> dump-test again.
> The kernel had the DEVICE_POLLING option in it, but polling was not, actually,
> enabled on em0.
> With three simultanious dumps arriving, the system-component of the load was
> 2 users Load 2.64 0.98 0.41 28 ??? 00:13
> Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
> Tot Share Tot Share Free in out in out
> Act 109936 30080 196064 42464 1642672 count
> All 366172 32684 1413555k 48140 pages
> Proc:r p d s w Csw Trp Sys Int Sof Flt cow 6720 total
> 3 55 9736 151241k19989 47 232248 wire irq1: atkb
> 79108 act irq6: fdc0
> 35.8%Sys 4.5%Intr 59.7%User 0.0%Nice 0.0%Idl 60372 inact irq15: ata
> | | | | | | | | | | 276 cache irq17: fwo
> ==================++>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1642396 free irq20: nve
> daefr irq21: ohc
> Namei Name-cache Dir-cache prcfr irq22: ehc
> Calls hits % hits % react 2710 irq25: em0
> 229 229 100 pdwak 24 irq29: amr
> zfod pdpgs 1993 cpu0: time
> Disks ad4 ad6 amrd0 ozfod intrn 1993 cpu1: time
> KB/t 0.00 0.00 128 %slo-z 221184 buf
> tps 0 0 12 4 tfree 22 dirtybuf
> MB/s 0.00 0.00 1.49 100000 desiredvnodes
> % busy 0 0 30 2409 numvnodes
> It was working...
> Then I entered the following shell command:
> % (ifconfig em0 polling; sleep 179; ifconfig em0 -polling) &
> Hoping, that, even if polling causes problems, three minutes later it will
> turn back off automatically.
> Unfortunately, the machine dropped off the network immediately and is not
> coming back. I'll get to its console on Monday, but something is still very
> wrong with the em-driver :-(
So the driver works fine for you so long as you don't try to change the
polling parameter while it's running?
More information about the freebsd-stable