[mapserver-users] Too Many Open Files

[Stephen Woodbridge]

Daniel,

I haven't worked with TomCat, but if it doing something like creating a 
process/thread/whatever for the mapscript request but treating it like a 
reusable thread, then it might not be shutting it down in which case 
files are not getting closed. The user might need to make sure TomCat is 
treating this like a cgi-bin process and not a mod_* type of process.

-Steve W

Daniel Morissette wrote:
> aseem wrote:
>> Thanks Daniel. Thanks for the reply. Yes, We are using MapScript. 
> 
> PHP MapScript?
> 
> 
>> I have
>> checked the open files by executing lsof command. I found that most of 
>> the
>> files are related to FGS. Following is the part of the output we got 
>> after
>> running lsof command.
> 
> You seem to have two processes with each about 30-40 files open, mostly 
> shared libraries. That's nothing to worry about or to take a system down.
> 
> Perhaps you need to re-check after 20-30 minutes of operation, when the 
> web server locks up (this is what happens, right?). What we're looking 
> for is an indication of a leak of file handles, i.e. the same file 
> opened hundreds of times... then we'll need to find out why that file is 
> never closed.
> 
> Which error message did you get exactly that led you to think that there 
> was a problem of too many files opened? Does the same problem happen if 
> you connect directly to the instance of Apache that comes with FGS 
> instead of going through the Tomcat server?
> 
> Daniel