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Kernel v2.4.19 /Documentation/sysctl/vm.txt

Filename:/Documentation/sysctl/vm.txt
Lines Added:14
Lines Deleted:0
Also changed in: (Previous) 2.4.19-rc5-ac1  2.4.19-rc5  2.4.19-rc4  2.4.19-rc3-ac5  2.4.19-rc3-ac4  2.4.19-rc3-ac3 
(Following) 2.4.19-ac1  2.4.19-ac2  2.4.19-ac3  2.4.19-ac4  2.4.20-pre1-ac1  2.4.20-pre1-ac2 

Location
[  2.4.19
  [  Documentation
    [  sysctl
       o  vm.txt

Patch

diff -urN linux-2.4.18/Documentation/sysctl/vm.txt linux-2.4.19/Documentation/sysctl/vm.txt
--- linux-2.4.18/Documentation/sysctl/vm.txt   Mon Sep 10 14:36:25 2001
+++ linux-2.4.19/Documentation/sysctl/vm.txt   Fri Aug  2 17:39:42 2002
@@ -21,6 +21,7 @@
 - buffermem
 - freepages
 - kswapd
+- max_map_count
 - overcommit_memory
 - page-cluster
 - pagecache
@@ -170,6 +171,19 @@
 
 ==============================================================
 
+max_map_count:
+
+This file contains the maximum number of memory map areas a
+process may have. Memory map areas are used as a side-effect
+of calling malloc, directly by mmap and mprotect, and also
+when loading shared libraries.
+
+While most applications need less than a thousand maps,
+certain programs, particularly malloc debuggers, may consume 
+lots of them, e.g. up to one or two maps per allocation.
+
+==============================================================
+
 page-cluster:
 
 The Linux VM subsystem avoids excessive disk seeks by reading


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