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    <title>topic poll(2) hang question. in Operating System - HP-UX</title>
    <link>https://community.hpe.com/t5/operating-system-hp-ux/poll-2-hang-question/m-p/2936652#M577091</link>
    <description>Has anyone run into a situation where poll(2) hangs?  I have an application that maintains a keepalive protocol when inactive.  I have tracked this down with nettl and sniffers and implimenting gettimeofday() into my program and it seems that every so often I encounter a large time lag where poll does not pick up a keepalive sent to it.  &lt;BR /&gt;&lt;BR /&gt;I can see from sniffer traces that the data arrives as the OS sends back a TCP level ack of corresponding sequence number.&lt;BR /&gt;&lt;BR /&gt;I have seen that there is a bug out for 11i (PHKL_25233  select(2) and poll(2) hang).  I am running on 10.20 and am wondering if there is something I am missing.&lt;BR /&gt;&lt;BR /&gt;Thanks in advance.</description>
    <pubDate>Wed, 26 Mar 2003 21:04:21 GMT</pubDate>
    <dc:creator>GPS</dc:creator>
    <dc:date>2003-03-26T21:04:21Z</dc:date>
    <item>
      <title>poll(2) hang question.</title>
      <link>https://community.hpe.com/t5/operating-system-hp-ux/poll-2-hang-question/m-p/2936652#M577091</link>
      <description>Has anyone run into a situation where poll(2) hangs?  I have an application that maintains a keepalive protocol when inactive.  I have tracked this down with nettl and sniffers and implimenting gettimeofday() into my program and it seems that every so often I encounter a large time lag where poll does not pick up a keepalive sent to it.  &lt;BR /&gt;&lt;BR /&gt;I can see from sniffer traces that the data arrives as the OS sends back a TCP level ack of corresponding sequence number.&lt;BR /&gt;&lt;BR /&gt;I have seen that there is a bug out for 11i (PHKL_25233  select(2) and poll(2) hang).  I am running on 10.20 and am wondering if there is something I am missing.&lt;BR /&gt;&lt;BR /&gt;Thanks in advance.</description>
      <pubDate>Wed, 26 Mar 2003 21:04:21 GMT</pubDate>
      <guid>https://community.hpe.com/t5/operating-system-hp-ux/poll-2-hang-question/m-p/2936652#M577091</guid>
      <dc:creator>GPS</dc:creator>
      <dc:date>2003-03-26T21:04:21Z</dc:date>
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