Question: How do I check the ulimit values of running processes? For Linux, I can view the /proc/process_id/limits file. However, AIX does not provide such file.
Answer:
On AIX you can use dbx to attach the running process as shown below. Be aware that the drawback from this method is that dbx interrupts the process by sending a SIGTRAP signal. After the dbx sessions finishes, the process terminates. A Design Change Request was made to address this.
$ dbx -a 10223814
Waiting to attach to process 10223814 ...
Successfully attached to ssh-agent.
warning: Directory containing ssh-agent could not be determined.
Apply 'use' command to initialize source path.
Type 'help' for help. reading symbolic information ... stopped in __fd_select at 0xd0236ebc ($t1) 0xd0236ebc (__fd_select+0xbc) 80410014 lwz r2,0x14(r1) (dbx) proc rlimit rlimit name: rlimit_cur rlimit_max (units) RLIMIT_CPU: (unlimited) (unlimited) sec RLIMIT_FSIZE: (unlimited) (unlimited) bytes RLIMIT_DATA: 134217728 (unlimited) bytes RLIMIT_STACK: 33554432 4294967296 bytes RLIMIT_CORE: 0 0 bytes RLIMIT_RSS: 33554432 (unlimited) bytes RLIMIT_AS: (unlimited) (unlimited) bytes RLIMIT_NOFILE: 2000 (unlimited) descriptors RLIMIT_THREADS: (unlimited) (unlimited) per process RLIMIT_NPROC: (unlimited) (unlimited) per user (dbx) quit
