Author: ivoras
Date: Mon Oct 25 14:05:25 2010
New Revision: 214342
URL: http://svn.freebsd.org/changeset/base/214342
Log:
Reduce the difference between hirunningspace and lorunningspace,
it should help interactivity in edge cases.
Modified:
head/sys/kern/vfs_bio.c
Modified: head/sys/kern/vfs_bio.c
==============================================================================
--- head/sys/kern/vfs_bio.c Mon Oct 25 14:04:21 2010 (r214341)
+++ head/sys/kern/vfs_bio.c Mon Oct 25 14:05:25 2010 (r214342)
@@ -623,16 +623,16 @@ bufinit(void)
lobufspace = hibufspace - MAXBSIZE;
/*
- * Note: The 16 MB upper limit for hirunningspace was chosen
+ * Note: The 16 MiB upper limit for hirunningspace was chosen
* arbitrarily and may need further tuning. It corresponds to
* 128 outstanding write IO requests (if IO size is 128 KiB),
* which fits with many RAID controllers' tagged queuing limits.
- * The lower 1 MB limit is the historical upper limit for
+ * The lower 1 MiB limit is the historical upper limit for
* hirunningspace.
*/
hirunningspace = lmax(lmin(roundup(hibufspace / 64, MAXBSIZE),
16 * 1024 * 1024), 1024 * 1024);
- lorunningspace = roundup(hirunningspace / 2, MAXBSIZE);
+ lorunningspace = roundup((hirunningspace * 2) / 3, MAXBSIZE);
/*
* Limit the amount of malloc memory since it is wired permanently into
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