The branch main has been updated by trasz:
URL:
https://cgit.FreeBSD.org/src/commit/?id=456666408f64d18c68b79ae13f5ae063df3c7293
commit 456666408f64d18c68b79ae13f5ae063df3c7293
Author: Edward Tomasz Napierala <tr...@freebsd.org>
AuthorDate: 2024-11-27 22:33:23 +0000
Commit: Edward Tomasz Napierala <tr...@freebsd.org>
CommitDate: 2024-11-28 07:47:52 +0000
Speed up syncer shutdown
When shutting down, the syncer kernel deamon needs to iterate over all
32 of its queues, pausing for 1/4 of second each time waiting for
essentially
nothing. Bump the SYNCER_SHUTDOWN_SPEEDUP so that it takes just a second to
iterate. It will still wait for another second afterwards; that bit is left
unchanged.
Reviewed By: kib
Differential Revision: https://reviews.freebsd.org/D47647
---
sys/kern/vfs_subr.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 8f582eb4ca01..feb808c0d4c7 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -323,9 +323,10 @@ DPCPU_DEFINE_STATIC(struct vdbatch, vd);
static void vdbatch_dequeue(struct vnode *vp);
/*
- * When shutting down the syncer, run it at four times normal speed.
+ * The syncer will require at least SYNCER_MAXDELAY iterations to shutdown;
+ * we probably don't want to pause for the whole second each time.
*/
-#define SYNCER_SHUTDOWN_SPEEDUP 4
+#define SYNCER_SHUTDOWN_SPEEDUP 32
static int sync_vnode_count;
static int syncer_worklist_len;
static enum { SYNCER_RUNNING, SYNCER_SHUTTING_DOWN, SYNCER_FINAL_DELAY }
