Date: Thu, 26 Apr 2012 11:07:23 -0700 From: Sean Bruno <seanbru@yahoo-inc.com> To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Cc: Jack Vogel <jfvogel@gmail.com>, John Baldwin <jhb@freebsd.org> Subject: igb(4) at peak in big purple Message-ID: <1335463643.2727.10.camel@powernoodle-l7.corp.yahoo.com>
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8 core box with 2 igb(4) interfaces serving internet traffic in/out over here in Yahoo land. This is configuring igb(4) allow 32k TXD/RXD descriptors(but only configuring for 8k), 4 queues per interface and changing the logic of the call to bus_bind_intr() such that it will iterate over all cpus in the system: http://people.freebsd.org/~sbruno/if_igb.c.txt http://people.freebsd.org/~sbruno/igb_stats.txt We're seeing >100MB/s which is very nice. Thanks! I note form top that igb0 queue 0 is always "more busy" than any other queue, there appears to be a second kernel igb0 "queue" process/thread that appears to be moderately busy and 3 kernel igb0 "queue" processes/threads that appear to be doing nothing in particular. There are not causing issues ... I'm just curious if this is meaningful to anyone or indicative of interesting things. Seanhome | help
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