Subject: Re: [PATCH 4/5] index-pack: Use the new worker pool

From: Junio C Hamano <[email-masked]>
Date: Tue, 25 Aug 2015 14:12:37 -0700

Stefan Beller <[email-masked]> writes:

> Not sure I follow there.
>
> Original implementation:
> We have M threads sitting around the table, all of them trying to obtain food
> from the one bowl on the table and then eating it.
> Once the bowl is all eaten, we can stop.
>
> New pattern:
> One cook puts all the food items on the sushi-go-round-belt with a fancy plate
> and the threads grab them one by one still using locks (but they are internal to
> the belt).
>
> Are you saying we're content with just a bowl and everyone helps themselves
> for getting food?

No.  I am questioning how big overhead is for having the
go-round-belt that must hold all dishes to be eaten, which did not
exist in the original arrangement.