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httpproxy High CPU Utilization

NashBrydges

Hi All,

For the last couple of days, my CPU utilization has been hovering between 20% and 98% with no web traffic of any kind happening. Running TOP shows that the httpproxy is what is eating up all of the CPU. This initially started after I updated to 9.400-9 on March 30th. At first there were a few blips throughout the day however now this is a consistently high CPU% for most of the day.

Here is what I've done so far...

  • Restarting httpproxy does not help. If I turn off Web Filtering then CPU goes back to normal (normal for me is between 0% and 3%)
  • Loaded the db to memory (cc set http sc_local_db mem)
  • Shortened my log retention window from indefinite to 7 days
  • Rebuilt my postgresql
  • Running in HA so swapped the master node from Node 1 to Node 2 and same issue appears (was trying to see if it was hardware related)
  • Rebooting also isn't fixing the issue

This is the CPU% when I started seeing the issue...

This is today's CPU%...

Any thoughts as to what might be happening? I wasn't seeing this behaviour at all before the last update.

I'm running Sophos Home UTM in HA (Active-Passive) on a pair of Dell Poweredge R210II each with E3-1270 CPU, 8GB RAM, and 500GB HDD.



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  • 0

    So after a few days of trying to figure out what was driving such a high CPU %, I've finally got it! I have 10 endpoints with Sophos Endpoint Protection setup on the UTM with 3 of them having Web Control enabled. As soon as I disable Web Control, CPU usage returns to previous levels. Enable Web Control and CPU % shoots up to 30% or more...and this is with only 3 endpoints.

    The interesting thing is that I've always had those same endpoints protected so something has changed with how the Endpoint Protection interacts with Sophos UTM.

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  • 0

    So after a few days of trying to figure out what was driving such a high CPU %, I've finally got it! I have 10 endpoints with Sophos Endpoint Protection setup on the UTM with 3 of them having Web Control enabled. As soon as I disable Web Control, CPU usage returns to previous levels. Enable Web Control and CPU % shoots up to 30% or more...and this is with only 3 endpoints.

    The interesting thing is that I've always had those same endpoints protected so something has changed with how the Endpoint Protection interacts with Sophos UTM.

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