On 8/11/06, Landon Fuller <[EMAIL PROTECTED]> wrote:
We saw this issue here on SMP systems running 6.1; I've been meaning to set up a reproduction case in the lab and dig into the issue further. Disabling the mpsafe network stack (debug.mpsafenet=0) is our temporary work-around; rwatson mentioned that this has the effect of forcing the interrupt handler for if_em to not run in parallel with the transmit code, which is likely what caused the problem to disappear.
Hmmm, I have code running right now that is required for new hardware, but I think will benefit all, that only has the hardware writeback and interrupt on the EOP descriptor. As it is now we have every descriptor written back. I havent had it put thru extensive tests yet, but I expect it to significantly reduce interrupts. I hope to be submitting this stuff together with TSO support to CURRENT soon, stay tuned. Jack Intel LAD _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
