Branch and tag deletions

Eric S. Raymond
Thu Nov 28 03:44:00 GMT 2019

Joseph Myers <>:
> One more observation on that: in my last test conversion, deleting the 
> emptycommit-* tags took over 7 hours (i.e. the bulk of the time for the 
> conversion was spent just deleting those tags).  Deleting tags matching 
> /-root$/ took about half an hour.  So I think there is a performance issue 
> somewhere with (some cases of) tag deletion by regexp, at least when the 
> regexp matches a large number of tags (but some other bulk deletions seem 
> to run much quicker per tag).  Taking a few seconds per tag is fine for an 
> individual deletion, but a problem when you want to delete 4070 tags at 
> once.

File that as an issue, please. Go has very good profiling tools, finding
the hotspot(s) in situations like this is easy and thus we should be able to
fix this quickly when it reaches the top of the priority list,
		<a href="">Eric S. Raymond</a>

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