[PATCH] milder kswapd

Rik van Riel (H.H.vanRiel@fys.ruu.nl)
Wed, 11 Mar 1998 16:29:11 +0100 (MET)


Hi there,

since many of you have complained that kswapd is a tad
agressive in 2.1.89, I've made the following patch to
counter that 'bad behaviour'.

happy hacking,

Rik.

(and don't forget your /proc/sys/vm/swapctl!)
+-------------------------------------------+--------------------------+
| Linux: - LinuxHQ MM-patches page | Scouting webmaster |
| - kswapd ask-him & complain-to guy | Vries cubscout leader |
| http://www.fys.ruu.nl/~riel/ | <H.H.vanRiel@fys.ruu.nl> |
+-------------------------------------------+--------------------------+

--- linux/mm/vmscan.c.orig Wed Mar 11 16:23:17 1998
+++ linux/mm/vmscan.c Wed Mar 11 16:25:52 1998
@@ -511,7 +511,6 @@
printk ("Starting kswapd v%.*s\n", i, s);
}

-#define MAX_SWAP_FAIL 3
/*
* The background pageout daemon.
* Started as a kernel thread from the init process.
@@ -559,15 +558,8 @@
if (tries < min_free_pages) {
tries = min_free_pages;
}
- else if (nr_free_pages < (free_pages_high + free_pages_low) / 2) {
+ else if (nr_free_pages < (free_pages_low + min_free_pages) / 2)
tries <<= 1;
- if (nr_free_pages < free_pages_low) {
- tries <<= 1;
- if (nr_free_pages <= min_free_pages) {
- tries <<= 1;
- }
- }
- }
while (tries--) {
int gfp_mask;

-
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