From: Albert Cahalan <albert@users.sf.net>
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@osdl.org>
Subject: PID_MAX_DEFAULT
Date: 14 Jul 2003 00:17:02 -0400 [thread overview]
Message-ID: <1058156222.751.1407.camel@cube> (raw)
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:
reply other threads:[~2003-07-14 4:10 UTC|newest]
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