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Make lorunningspace catch up with hirunningspace.

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While there, add comment about the magic numbers.

Prodded by:	alc
This commit is contained in:
Ivan Voras 2010-07-23 12:30:29 +00:00
parent 5f270659fd
commit 984c64736c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=210410
1 changed files with 6 additions and 1 deletions
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7
sys/kern/vfs_bio.c
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@ -620,9 +620,14 @@ bufinit(void)
hibufspace = lmax(3 * maxbufspace / 4, maxbufspace - MAXBSIZE * 10);
lobufspace = hibufspace - MAXBSIZE;
lorunningspace = 512 * 1024;
/*
* Note: The 16 MB upper limit for hirunningspace was chosen
* arbitrarily and may need further tuning. The lower 1 MB
* 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);
/*
* Limit the amount of malloc memory since it is wired permanently into