From: Cliff Wickman <cpw@xxxxxxx>
If there is plenty of memory use non-cyclic mode.
Diffed against makedumpfile-1.5.4
Signed-off-by: Cliff Wickman <cpw at sgi.com>
---
makedumpfile.c | 26 ++++++++++++++++++++++++++
Index: makedumpfile-1.5.4/makedumpfile.c
===================================================================
--- makedumpfile-1.5.4.orig/makedumpfile.c
+++ makedumpfile-1.5.4/makedumpfile.c
@@ -7638,6 +7638,23 @@ writeout_multiple_dumpfiles(void)
return ret;
}
+/*
+ * Plenty of memory to do a non-cyclic dump.
+ * Default to non-cyclic in this case.
+ */
+static int
+plenty_of_memory(void)
+{
+ unsigned long free_size;
+ unsigned long needed_size;
+
+ free_size = get_free_memory_size();
+ needed_size = (info->max_mapnr * 2) / BITPERBYTE;
+ if (free_size > (needed_size + (10*1024*1024)))
+ return 1;
+ return 0;
+}
+
int
create_dumpfile(void)
{
@@ -7655,6 +7672,15 @@ create_dumpfile(void)
print_vtop();
+ if (plenty_of_memory()) {
+ if (info->flag_cyclic == TRUE)
+ MSG("Plenty of memory; using non-cyclic mode.\n");
+ info->flag_cyclic = FALSE;
+ } else {
+ if (info->flag_cyclic == TRUE)
+ MSG("Restricted memory; staying in cyclic mode.\n");
+ }
+
num_retry = 0;
retry:
if (info->flag_refiltering) {
