Skip to content

Commit

Permalink
dump(8): clarify the recommended use of cache and snapshots
Browse files Browse the repository at this point in the history 
PR:		131626
MFC after:	1 week
Submitted by:	Andrew Hamilton-Wright <[email protected]>
Reviewed by:	bcr
Differential Revision:	https://reviews.freebsd.org/D27775
  • Loading branch information
@yzgyyang
yzgyyang committed Dec 28, 2020
1 parent 0c09f4b commit 70a2e10
Showing 1 changed file with 6 additions and 4 deletions.
10 changes: 6 additions & 4 deletions sbin/dump/dump.8
View file
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@
.\" @(#)dump.8 8.3 (Berkeley) 5/1/95
.\" $FreeBSD$
.\"
.Dd June 13, 2019
.Dd December 28, 2020
.Dt DUMP 8
.Os
.Sh NAME
Expand Down Expand Up @@ -134,9 +134,11 @@ Specify the cache size in megabytes.
This will greatly improve performance
at the cost of
.Nm
possibly not noticing changes in the file system between passes.
It is
recommended that you always use this option when dumping a snapshot.
possibly not noticing changes in the file system between passes
unless a snapshot is being used.
The potential for performance improvement indicates that
use of this option together with snapshots is the recommended
course of action.
Beware that
.Nm
forks, and the actual memory use may be larger than the specified cache
Expand Down

0 comments on commit 70a2e10

Please sign in to comment.