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Remove mention of SYNCER_MAXDELAY and "thirty seconds", using more

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general terms instead.  This follows a discussion with alfred,
in which it became clear that I had misunderstood sched_sync().
This commit is contained in:
Sheldon Hearn 2000-07-19 11:47:16 +00:00
parent 4f012c3d41
commit cdae8e9d4e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=63511
1 changed files with 8 additions and 12 deletions
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20
share/man/man4/syncer.4
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@ -37,14 +37,10 @@ The
.Nm
kernel process helps protect the integrity of disk volumes
by flushing volatile cached filesystem data to disk.
This is done at thirty second
.Pq actually Dv SYNCER_MAXDELAY - 2
intervals by default.
.Pp
The kernel places all
.Xr vnode 9 Ns 's
in a number of queues equal to
.Dv SYNCER_MAXDELAY .
in a number of queues.
The
.Nm
process works through the queues
@ -52,7 +48,7 @@ in a round-robin fashion,
usually processing one queue per second.
For each
.Xr vnode 9
on the queue,
on that queue,
the
.Nm
process forces a write out to disk of its dirty buffers.
@ -60,12 +56,6 @@ process forces a write out to disk of its dirty buffers.
.Xr sync 2 ,
.Xr fsck 8 ,
.Xr sync 8
.Sh BUGS
It is possible on some systems that a
.Xr sync 2
occurring simultaneously with a crash may cause
file system damage. See
.Xr fsck 8 .
.Sh HISTORY
The
.Nm
@ -80,3 +70,9 @@ A kernel initiated
update
process first appeared in
.Fx 2.0 .
.Sh BUGS
It is possible on some systems that a
.Xr sync 2
occurring simultaneously with a crash may cause
file system damage. See
.Xr fsck 8 .