diff --git a/doc/bugs/git-annex_doesn__39__t_work_on_lustre:_waitToSetLock:_unsupported_operation___40__Function_not_implemented__41__/comment_10_cdbd35ab0ba9c9157fd6530bebbc4650._comment b/doc/bugs/git-annex_doesn__39__t_work_on_lustre:_waitToSetLock:_unsupported_operation___40__Function_not_implemented__41__/comment_10_cdbd35ab0ba9c9157fd6530bebbc4650._comment
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+++ b/doc/bugs/git-annex_doesn__39__t_work_on_lustre:_waitToSetLock:_unsupported_operation___40__Function_not_implemented__41__/comment_10_cdbd35ab0ba9c9157fd6530bebbc4650._comment
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 10"""
+ date="2015-11-10T18:47:36Z"
+ content="""
+I think what yoh meant above was that -o lock (not `sync`) has a heavy
+performance impact. Or at least a perceived one. And thus, lustre clusters
+are not using it even though the feature is available and would probably be
+find for git-annex's use if enabled.
+"""]]