SUMMARY: Stack overflow - help needed

From: Padiyath Sreekumaran (Kumar.Padiyath_at_psi.ch)
Date: 04/26/05

  • Next message: Howard Arnold: "600au with fibre channel" 
    Date: Tue, 26 Apr 2005 11:22:23 +0200
To: "'tru64-unix-managers@ornl.gov'" <tru64-unix-managers@ornl.gov>

       Hello,
       The question was:

    > Hello,
    > OS = Tru64 V5.1A
    > One of the user got an error message during the execution of a
    > program:
    >
    > stack overflow
    > .
    > .
    > Core dumped.
    >
    > The present configuration:
    > sysconfig -q proc output
    >
    > $sysconfig -q proc
    > proc:
    > max_proc_per_user = 256
    > max_threads_per_user = 1024
    > per_proc_stack_size = 4194304 <-------------------
    > max_per_proc_stack_size = 48000000 <---------------------
    > per_proc_data_size = 2147483648 max_per_proc_data_size = 2147483648
    > max_per_proc_address_space = 2147483648
    > per_proc_address_space = 2147483648
    > executable_stack = 0
    > autonice = 0
    > autonice_time = 600
    > autonice_penalty = 4
    > open_max_soft = 4096
    > open_max_hard = 4096
    > ncallout_alloc_size = 8192
    > round_robin_switch_rate = 0
    > sched_min_idle = 0
    > give_boost = 1
    > maxusers = 2048
    > num_wait_queues = 2048
    > num_timeout_hash_queues = 2048
    > enhanced_core_name = 0
    > enhanced_core_max_versions = 16
    > exec_disable_arg_limit = 0
    > dump_cores = 1
    > dump_setugid_cores = 0
    >
    > limit output:
    > =============
    >
    > $limit
    > cputime unlimited
    > filesize unlimited
    > datasize 2097152 kbytes
    > stacksize 46875 kbytes
    > coredumpsize unlimited
    > memoryuse 3068192 kbytes
    > vmemoryuse 2097152 kbytes
    > descriptors 4096
    >
    > Can I just increase the process stack values(proc stack and max stack)
    > without increasing the other values? What is the maximum size I can
    > define
    > for stack in a 3G memory machine?
    >
    ----------------------------------------------------------------------------
    -------

        I found in the meantime that another user was also a running a job
        on the machine which was taking most of the stack space.HP told me how I
    have to
        increase the stack and Dr.Blinn gave me the following answer:
        
    "You already have a very large stack size defined. The user
    can unlimit the stack size default in their process using
    the shell unlimit command or the ulimit program so that they can use up to
    the currently defined max_per_proc_stack_size but if they've got a run-away
    recursion or some other kind of program bug, doing so is unlikely to make
    the problem go away.

    So you should tell the user to investigate why their program
    is overflowing the stack. It's probably a program bug, and
    if it's a user written program, that's even more likely to
    be the cause of the problem."

      HP gave the following solution:
     =================================

    proc:
    per_proc_stack_size = 268435456
    max_per_proc_stack_size = 1073741824
    per_proc_data_size = 2147483648
    max_per_proc_data_size = 8589934592
    per_proc_address_space = 4294967296
    max_per_proc_address_space = 8589934592

              I have not yet taken any action since a long job is running on the
              machine.

              Thanks for your help and suggestions.

           Regards,
           Kumar

    ------------------------------------------------------------------
    Padiyath Sreekumar | Tel: +41.56.310.3643
    Paul Scherrer Institut | email: kumar.padiyath@psi.ch
    AIT | Office: WHGA/U132
    WHGA/U132 | Fax: +41.56.310.3649
    CH-5232 Villigen PSI |
    Switzerland |
    -----------------------------------------------------------------

  • Next message: Howard Arnold: "600au with fibre channel"

    Relevant Pages

    • Re: stack error detection
      ... time where the stack overflow occurs (because resizing the size is ... Resizing the stack automatically is therefore pointless if you don't ... r0 -8 rRP stwu, ...
      (comp.lang.forth)
    • Re: How many ActiveX controls can I have? Stack overflow problems...
      ... BTW, I'd be very suspicious of your tree control (especially with 30,000 ... that's one of the main causes of "out of stack" conditions. ... >calling functions calling functions... ... would I have a stack overflow if I split the above ...
      (microsoft.public.access.forms)
    • Re: Public disclosure of discovered vulnerabilities
      ... >Like, for instance, your mention of stack overflow when I was talking ... buffer that happens to be on the stack to contain the compiled equilvalent ... the distinction between whatever you mean by "stack overflow" ... and many other things were standard. ...
      (sci.crypt)
    • Re: grassfire algorithm in java
      ... All you have is the stack overflow error message, ... >> rather long, uninformative stack trace, and no other options. ... along with the recursion count. ... void showResult{ ...
      (comp.lang.java.programmer)
    • Re: What causes a STKOVF
      ... Wizard stuff on stack overflow exceptions, but most of them simply say ... process that got the SS$_STKOVF exception is huge. ... overflow" in a non-threaded situation (though it's a DECwindows app, ...
      (comp.os.vms)