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Mention turning on WAPBL_DEBUG_SERIALIZE to work around performance issue

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in simonb-wapbl.
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oster 2008-07-28 04:07:59 +00:00
parent d7ca47879f
commit 66303c1993
1 changed files with 3 additions and 1 deletions
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doc/BRANCHES
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@ -1,4 +1,4 @@
# $NetBSD: BRANCHES,v 1.264 2008/07/14 08:49:15 simonb Exp $
# $NetBSD: BRANCHES,v 1.265 2008/07/28 04:07:59 oster Exp $
#
# This file contains a list of branches that exist in the NetBSD CVS
# tree and their current state.
@ -617,6 +617,8 @@ Notes: Still has a number of issues:
- Log must currently live at end of partition.
- No log locators.
- Some heavy workload performance issues on SMP machines.
Work around this issue by turning on WAPBL_DEBUG_SERIALIZE
in rev 1.1.2.11 of vfs_wapbl.c.
- Removing large files (sparse only?) takes a long time.
Eg, a file created with
dd if=/dev/zero of=foox bs=1 count=1 seek=11261748520550