From: Junio C Hamano <gitster@pobox•com>
To: Stefan Beller <sbeller@google•com>
Cc: Jeff King <peff@peff•net>,
"git\@vger.kernel.org" <git@vger•kernel.org>,
Jonathan Nieder <jrnieder@gmail•com>
Subject: Re: [PATCH 4/5] index-pack: Use the new worker pool
Date: Tue, 25 Aug 2015 14:12:37 -0700 [thread overview]
Message-ID: <xmqq37z7xebe.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <CAGZ79kZ9V35KmJSExt=EqYFcyOSysaFsJA0E+dx46Qg+Pm+Ybg@mail.gmail.com> (Stefan Beller's message of "Tue, 25 Aug 2015 13:59:04 -0700")
Stefan Beller <sbeller@google•com> 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.
next prev parent reply other threads:[~2015-08-25 21:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-25 17:28 [RFC PATCH 0/5] Demonstrate new parallel threading API Stefan Beller
2015-08-25 17:28 ` [PATCH 1/5] FIXUP submodule: implement `module_clone` as a builtin helper Stefan Beller
2015-08-25 17:28 ` [PATCH 2/5] thread-utils: add a threaded task queue Stefan Beller
2015-08-25 17:28 ` [PATCH 3/5] submodule: helper to run foreach in parallel Stefan Beller
2015-08-25 21:09 ` Junio C Hamano
2015-08-25 21:42 ` Stefan Beller
2015-08-25 22:23 ` Junio C Hamano
2015-08-25 22:44 ` Junio C Hamano
2015-08-26 17:06 ` Jeff King
2015-08-26 17:21 ` Stefan Beller
2015-08-25 17:28 ` [PATCH 4/5] index-pack: Use the new worker pool Stefan Beller
2015-08-25 19:03 ` Jeff King
2015-08-25 19:23 ` Stefan Beller
2015-08-25 20:41 ` Junio C Hamano
2015-08-25 20:59 ` Stefan Beller
2015-08-25 21:12 ` Junio C Hamano [this message]
2015-08-25 22:39 ` Stefan Beller
2015-08-25 22:50 ` Junio C Hamano
2015-08-25 17:28 ` [PATCH 5/5] pack-objects: Use " Stefan Beller
-- strict thread matches above, loose matches on Subject: below --
2015-08-27 0:52 [RFC PATCH 0/5] Progressing with `git submodule foreach_parallel` Stefan Beller
2015-08-27 0:52 ` [PATCH 4/5] index-pack: Use the new worker pool Stefan Beller
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