[CentOS] Help with file descriptors
Guy Boisvert
boisvert.guy at videotron.ca
Wed Nov 28 20:55:21 UTC 2007
Garrick Staples wrote:
> On Wed, Nov 28, 2007 at 03:03:30PM -0500, Guy Boisvert alleged:
>> Hi all!
>>
>> I have a problem with CentOS 4.4 and Communigate Pro 5.0.9. As our
>> user number grows, we are seeing "too many files open" error messages in
>> Communigate logs.
>>
>> I spoke with Communigate tech support and they asked me to increase
>> the number of file descriptors which i did. I put 128000 as a script i
>> made to check Communigate open files reported as high as 99000. As i
>> checked the Communigate log file, it reported that it "sees" 1024
>> "available" file descriptors.
>>
>> Reporting that to Communigate tech support, the guy answered:
>>
>> "CommuniGate gets this number via getdtablesize() system call. Probably
>> in CentOS the table has a fixed size so you need to recompile the kernel
>> to expand it. Try upgrading CentOS to 4.5 (or whatever later version is
>> available) "
>>
>>
>> I'm a little afraid of upgrading the server right away, i don't want
>> to worsen the problem. Or maybe it's safe to do it. I dunno.
>>
>> Is there anybody on the list that can comment on what the
>> Communigate tech support guy said about the "getdtablesize" thing ?
>
> As usual, commercial support is just making things up. This one is easy to actually test.
>
> #include <unistd.h>
> #include <stdio.h>
>
> int main (void) {
> printf("current file limit: %d\n",getdtablesize);
> exit (0);
> }
>
>
> Compile it, run it, viola!
===> Voila! (French is my first language! Trying to help for your
french here!)
>
> $ gcc getdtablesize.c
> $ ./a.out
> current file limit: 134513392
>
> (results will vary).
>
>
OMG! Exactly what i needed! It reminds me when i was coding C on a Sun
SparcStation 10 about 15 years ago!
I did compile the code and obtained exactly the same number.
Thanks a lot Garrick!
I just replied to the TS guy @ Communigate, i just can't stand to see
what will be his response!
Regards,
Guy Boisvert
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