[SOLVED] RE: [Backtrace] 4.9 and 5.1-RELEASE occasionly panic on
RAM > 4GB without PAE (long)
delphij at frontfree.net
Wed Dec 24 22:38:54 PST 2003
First I would say "thank you" to those who helped me to find the cause of
the problem. Now I have confirmed that the problem goes away after a kernel
To trigger the problem, the box must have more than 2GB RAM and the
A default, say, GENERIC kernel would not trigger panic's during my test.
The problem exists on 4-STABLE and 5-CURRENT, however, by increasing kernel
virtual address space by adding a line like the following:
The panics goes away.
I would suggest the following patch against -HEAD to be applied:
RCS file: /home/ncvs/src/sys/conf/NOTES,v
retrieving revision 1.1192
diff -u -r1.1192 NOTES
--- NOTES 7 Dec 2003 04:41:11 -0000 1.1192
+++ NOTES 25 Dec 2003 06:36:27 -0000
@@ -89,6 +89,12 @@
# and explicitly set the maximum with a shell command for processes
# that regularly exceed the limit like INND.
+# Adjusting these parameters may result in a larger kernel memory
+# usage. Thus you may want to enlarge kernel virtual address space.
+# On a i386 box with more than 2GB of memory and the following
+# options, KVA_PAGES=512 would be helpful to solve some fork related
+# kernel panics.
Thank you again for your help!
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