Date: Sun, 12 Nov 2006 22:15:38 -0700 From: Scott Long <scottl@samsco.org> To: Mike Tancsa <mike@sentex.net> Cc: freebsd-net <freebsd-net@freebsd.org>, freebsd-stable@freebsd.org, Jack Vogel <jfvogel@gmail.com> Subject: Re: Proposed 6.2 em RELEASE patch Message-ID: <4557FF7A.8020704@samsco.org> In-Reply-To: <200611130454.kAD4sZwe041556@lava.sentex.ca> References: <2a41acea0611081719h31be096eu614d2f2325aff511@mail.gmail.com> <200611091536.kA9FaltD018819@lava.sentex.ca> <45534E76.6020906@samsco.org> <200611092200.kA9M0q1E020473@lava.sentex.ca> <200611102004.kAAK4iO9027778@lava.sentex.ca> <2a41acea0611101400w5b8cef40ob84ed6de181f3e2c@mail.gmail.com> <200611102221.kAAML6ol028630@lava.sentex.ca> <455570D8.6070000@samsco.org> <200611120412.kAC4CuIB035746@lava.sentex.ca> <45574ECA.4080207@samsco.org> <200611130040.kAD0etbp040637@lava.sentex.ca> <4557CECD.2000609@samsco.org> <200611130158.kAD1wdKE040908@lava.sentex.ca> <4557EF13.9060305@samsco.org> <200611130454.kAD4sZwe041556@lava.sentex.ca>
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Mike Tancsa wrote: > At 11:05 PM 11/12/2006, Scott Long wrote: >> Mike Tancsa wrote: >>> However, if I turn on fastforwarding, its back to the old behavior >>> with it locking up. This was with the stock driver. I will try the >>> same test with >>> #define EM_FAST_INTR 1 >>> as well as taking out the nfs option from the kernel driver. >>> Anything else to tune with ? >>> ---Mike >> >> Would you mind going so far as to adding NO_ADAPTIVE_MUTEXES? This is > > Wow, it totally survives 2 streams (2 in one direction or 2 in opposite > directions)... AND it almost can survive a 3rd! It does seem to be > dropping packets on em1 when I add in a second stream blasting in the > same direction, but its survives. You can see at ** I add in the second > stream, and the outbound on em1 drops, even though more packets are > going through. I stop the second stream then add a stream going in the > other direction. Oddly enough, with a UP kernel it cant do 2 streams, > just the one. I thought the extra locking on SMP would make it worse ? > In this case it seems no. > Is this with EM_INTR_FAST enabled also? Scott
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