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Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

4909.0. "Socket Failure: too many open files" by LICAUS::LICAUSE (Al Licause (264-4780)) Mon Apr 19 1993 16:18

ULTRIX V4.3, DECmcc V1.3 SSB, DECnet/OSI V5.1 on DECstation 5000/240 w/128MB.

When starting notifications using MCC_ICONIC_MAP command, the command is
followed by many, many, many lines of "Socket Failure: too many open files".

Also displayed are perhaps one window for each corresponding message above
indicating something about "insufficient buffer space to handle request".

This looks like a system tunning problem, but since I'm relatively new to
ULTRIX, I don't really know what to bump up or where to look.

I did increase the various parameters called out in the installation guide
and did successfully rebuild the kernel.

Any help on this greatly appreciated.

Al
T.RTitleUserPersonal
Name
DateLines
4909.1increase max_nofileTAEC::LAVILLATWed Apr 21 1993 06:3521
Re .0:
>
>ULTRIX V4.3, DECmcc V1.3 SSB, DECnet/OSI V5.1 on DECstation 5000/240 w/128MB.
>
>When starting notifications using MCC_ICONIC_MAP command, the command is
>followed by many, many, many lines of "Socket Failure: too many open files".
>

 This means that your Iconic Map process has open too many files. :-)

 The ULTRIX parameter controlling that is max_nofile that is defined to 256
 by default. You can modify it (to 1024 for example) by editing the file
 /sys/conf/mips/param.c and rebuilding the kernel.

 Another ULTRIX parameter controlling the max number of open file for the
 whole system is MAXUSERS that can be increased by modifying its value in
 /usr/sys/conf/mips/MACHINE_NAME

 Regards.

 Pierre.
4909.2Bumped it up but now no incoming events!LICAUS::LICAUSEAl Licause (264-4780)Wed Apr 21 1993 09:4220
    Pierre,
    
    Thanks very much.
    
    In working with Jack Davisson at the Colorado CSC, we decided to bump
    the max_nofile to 4096 and smmax from the recommended value of 1024 to
    2048.
    
    Now I am able to start all notification requests w/o getting the error
    messages.
    
    Now I'm not seeing any incoming notifications in the iconic map
    notification window even though I can issue a GETEVENT and see it
    come in at the FCL level.
    
    We'll keep trying and hopefully get to a happy medium....(i.e.something
    that works!)
    
    Al