Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
CPU usage is minimal, it appear to be waiting for more data from the Oracle box. We are working with the administrators to determine what is going on from their side. I believe it is somehow connected to firewall issues.

I've used truss and it shows that the last thing issued was a read. The point where it freezes looks like this:

time() = 1236374108 write(2, " [ F r i M a r 6 ".., 70) = 70 write(8, "02 T\0\006\0\0\0\0\003 ^".., 596) = 596 read(8, 0x003A17C6, 2064) (sleeping...) read(8, "07DB\0\006\0\0\0\0\010\0".., 2064) = 1380 read(8, "\0\0\0\006 H a r r i s\0".., 631) = 631 brk(0x003AC710) = 0 brk(0x003B2710) = 0 read(8, "07DB\0\006\0\0\0\0\0\0FF".., 2064) = 2011 read(8, 0x003A17C6, 2064) (sleeping...)

The '(sleeping...)' line is always the last thing printed.

We've ruled out the IPS (Intrusion Prevention System) because we shut it completely off with no apparent change in behavior. We've also snooped the Perl box and it appears to confirm that the program is waiting on read results.

Although I am worried about the cause, I'm more concerned now with finding a methodology that will terminate the program gracefully and alert us to the problem. Even if we do determine the source of the problem (I'm fairly certain we will), we'll still have the threat of similar problems in the future.


In reply to Re^2: Fetching Madness by jlongino
in thread Fetching Madness by jlongino

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (2)
As of 2021-12-07 03:46 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    R or B?



    Results (33 votes). Check out past polls.

    Notices?