Messages in this thread Patch in this message | | | Subject | PID_MAX_DEFAULT | From | Albert Cahalan <> | Date | 14 Jul 2003 00:17:02 -0400 |
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A few things have changed since PID_MAX_DEFAULT was set to 0x8000. It's now adjustable via the /proc/sys/kernel/pid_max file. An app, /bin/ps, now reads this file to determine column width for PID, PPID, PGID, SESS, LWP, and so on.
The common-case Linux box is best served by a value that keeps /bin/ps PID columns narrow, allowing for more space elsewhere. The following patch gives 4-digit PID values as a default.
diff -Naurd old/include/linux/threads.h new/include/linux/threads.h --- old/include/linux/threads.h 2003-07-12 19:01:14.000000000 -0400 +++ new/include/linux/threads.h 2003-07-12 19:03:34.000000000 -0400 @@ -25,7 +25,7 @@ /* * This controls the default maximum pid allocated to a process */ -#define PID_MAX_DEFAULT 0x8000 +#define PID_MAX_DEFAULT 10000 /* * A maximum of 4 million PIDs should be enough for a while:
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