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    <title>topic Re: IPS 4240 software 6.2(3)E4 in Network Security</title>
    <link>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584151#M65806</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;It would be difficult to pin point what the exact issue is with the high CPU just by the information provided in the post. It seems that the mainApp is causing the high CPU, however, it is worth investigating further. I would suggest that you log a Cisco TAC case so further investigation can be performed.&lt;/P&gt;&lt;P&gt;Alternatively, you can try to upgrade the software to the latest version of 7.0.4(E4) which has engine improvement.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Mon, 24 Jan 2011 08:18:06 GMT</pubDate>
    <dc:creator>Jennifer Halim</dc:creator>
    <dc:date>2011-01-24T08:18:06Z</dc:date>
    <item>
      <title>IPS 4240 software 6.2(3)E4</title>
      <link>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584150#M65804</link>
      <description>&lt;P&gt;Hello!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I have a sensor IPS-4240 which holds IPS software 6.2(3)E4. Right now we havn't got a license.&lt;/P&gt;&lt;P&gt;With the device wh have almost 100% cpu usage all the time:&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: courier new,courier; font-size: 10pt;"&gt;show statistics host&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: courier new,courier; font-size: 10pt;"&gt;General Statistics&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Last Change To Host Config (UTC) = 27-Dec-2010 14:51:19&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Command Control Port Device = Management0/0&lt;BR /&gt;Network Statistics&lt;BR /&gt;:&lt;BR /&gt;:&lt;BR /&gt;Memory Usage&lt;BR /&gt;&amp;nbsp;&amp;nbsp; usedBytes = 1426128896&lt;BR /&gt;&amp;nbsp;&amp;nbsp; freeBytes = 558419968&lt;BR /&gt;&amp;nbsp;&amp;nbsp; totalBytes = 1984548864&lt;BR /&gt;Summertime Statistics&lt;BR /&gt;&amp;nbsp;&amp;nbsp; start = 02:00:00 UTC Sun Mar 27 2011&lt;BR /&gt;&amp;nbsp;&amp;nbsp; end = 03:00:00 UTC Sun Oct 30 2011&lt;BR /&gt;CPU Statistics&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Usage over last 5 seconds = 100&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Usage over last minute = 100&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Usage over last 5 minutes = 100&lt;BR /&gt;Memory Statistics&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Memory usage (bytes) = 1426128896&lt;BR /&gt;&amp;nbsp;&amp;nbsp; Memory free (bytes) = 558419968&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;From service accont I see that only one process eats CPU - mainApp.&lt;/P&gt;&lt;P&gt;I even created addition virtual sensor vs1 where I have disabled all signatures. It gave me no result.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Situation can be changed for a while after the sensor's reboot, but not for long time.&lt;/P&gt;&lt;P&gt;show interfaces doesn't show a lot of input traffic too.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Event log contains only following warnings:&lt;/P&gt;&lt;P&gt;&lt;SPAN style="font-family: courier new,courier; font-size: 10pt;"&gt;evError: eventId=1293461883161643337 severity=warning vendor=Cisco&lt;BR /&gt;&amp;nbsp; originator:&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; hostId: XXXXXX&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; appName: notification&lt;BR /&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; appInstanceId: 409&lt;BR /&gt;&amp;nbsp; time: 2011/01/19 15:22:56 2011/01/19 21:22:56 GMT+06:00&lt;BR /&gt;&amp;nbsp; errorMessage: name=errWarning - the subscription lost data [IdsEventStore::readSubscription()]&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;What can be a problem? How can I reduce CPU usage?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;With hope to resolve the issue&lt;/P&gt;</description>
      <pubDate>Sun, 10 Mar 2019 12:14:23 GMT</pubDate>
      <guid>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584150#M65804</guid>
      <dc:creator>Maxim Zimovets</dc:creator>
      <dc:date>2019-03-10T12:14:23Z</dc:date>
    </item>
    <item>
      <title>Re: IPS 4240 software 6.2(3)E4</title>
      <link>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584151#M65806</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;It would be difficult to pin point what the exact issue is with the high CPU just by the information provided in the post. It seems that the mainApp is causing the high CPU, however, it is worth investigating further. I would suggest that you log a Cisco TAC case so further investigation can be performed.&lt;/P&gt;&lt;P&gt;Alternatively, you can try to upgrade the software to the latest version of 7.0.4(E4) which has engine improvement.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 24 Jan 2011 08:18:06 GMT</pubDate>
      <guid>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584151#M65806</guid>
      <dc:creator>Jennifer Halim</dc:creator>
      <dc:date>2011-01-24T08:18:06Z</dc:date>
    </item>
    <item>
      <title>Re: IPS 4240 software 6.2(3)E4</title>
      <link>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584152#M65807</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thank you for reply. I already have oped the request. Let's see what results be.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;With best regards&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 24 Jan 2011 10:51:06 GMT</pubDate>
      <guid>https://community.cisco.com/t5/network-security/ips-4240-software-6-2-3-e4/m-p/1584152#M65807</guid>
      <dc:creator>Maxim Zimovets</dc:creator>
      <dc:date>2011-01-24T10:51:06Z</dc:date>
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