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Gregory_Link
Contributor

CPU Spike Issues caused by increase in Inspect Traffic to assets.msn.com

Beginning yesterday we started seeing really high CPU spikes on the active firewall in our cluster.  The only outlier I see is lots of inspect traffic to assets.msn.com .  Is anyone else seeing this?

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2 Replies
the_rock
Legend
Legend

Do you have https inspection enabled? If so, try disable it and install policy, see if it makes any difference.

Andy

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Timothy_Hall
Champion
Champion

Are individual cores getting spiked while others are relatively idle, or all CPUs spiking up more or less together?  If the former, see what the Spike Detective has to say: sk166454: CPU Spike Detective

In the latest Jumbo HFA versions it will even log elephant flows that can be tracked down after 24 hours, unlike fw ctl multik print_heavy_conn.

Gateway Performance Optimization R81.20 Course
now available at maxpowerfirewalls.com

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