A fix is available
APAR status
Closed as program error.
Error description
Communications Server for Linux, Version 6.4 Communications Server for Data Center Deployment, Version 7 ----------------------------------------------------------- With a large number of SSL clients, the TN3270 Server process may core dump.
Local fix
Problem summary
In the interface to the FSKit (SSL) code, there is a poll mechanism for file descriptors (sockets, for our purposes) to let us know when data is available for reading. For this poll mechanism, there is a limit of 1024 descriptors, above which behavior "becomes unpredictable". Whether it continues to work as expected beyond that appears to depend on the specific OS and GSKit levels in use.
Problem conclusion
The TN Server code has been modified to work within this limitation.
Temporary fix
Comments
APAR Information
APAR number
LI77775
Reported component name
CS FOR LINUX
Reported component ID
5724I3300
Reported release
640
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-12-23
Closed date
2013-12-23
Last modified date
2013-12-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
CS FOR LINUX
Fixed component ID
5724I3300
Applicable component levels
R640 PSY
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSHQLW","label":"Communications Server for Linux"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"640","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
14 October 2021