Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

As the number of allocated vnodes goes beyond 106% of desiredvnodes 

start throttling threads allocating new vnodes at a rate of ~100 new
vnodes per second and thread.
This commit is contained in:
hannken 2023-11-06 12:17:50 +00:00
parent dbee9926f7
commit cc8bf809e7
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/kern/vfs_vnode.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: vfs_vnode.c,v 1.149 2023/02/24 11:02:27 riastradh Exp $ */
/* $NetBSD: vfs_vnode.c,v 1.150 2023/11/06 12:17:50 hannken Exp $ */
/*-
* Copyright (c) 1997-2011, 2019, 2020 The NetBSD Foundation, Inc.
@ -148,7 +148,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.149 2023/02/24 11:02:27 riastradh Exp $");
__KERNEL_RCSID(0, "$NetBSD: vfs_vnode.c,v 1.150 2023/11/06 12:17:50 hannken Exp $");
#ifdef _KERNEL_OPT
#include "opt_pax.h"
@ -539,6 +539,8 @@ lru_requeue(vnode_t *vp, vnodelst_t *listhd)
if ((d > 0 && numvnodes > desiredvnodes) ||
listhd == &lru_list[LRU_VRELE])
cv_signal(&vdrain_cv);
if (d > 0 && numvnodes > desiredvnodes + desiredvnodes / 16)
kpause("vnfull", false, mstohz(10), &vdrain_lock);
mutex_exit(&vdrain_lock);
}
@ -689,7 +691,7 @@ vdrain_thread(void *cookie)
for (;;) {
vdrain_retry = false;
target = desiredvnodes - desiredvnodes/10;
target = desiredvnodes - desiredvnodes / 16;
for (i = 0; i < LRU_COUNT; i++) {
TAILQ_INSERT_HEAD(&lru_list[i], marker, vi_lrulist);