Re: Something is broken in repack

From: David Kastrup <dak@gnu.org>
Date: Dec 11, 2007, 11:08 UTC
Message-ID: <85bq8xlc8w.fsf@lola.goethe.zz>
In-Reply-To: <alpine.LFD.0.99999.0712102225240.555@xanadu.home>

Nicolas Pitre <nico@cam.org> writes:

Show 15 quoted lines

> On Mon, 10 Dec 2007, Junio C Hamano wrote:
>
>> "Jon Smirl" <jonsmirl@gmail.com> writes:
>> 
>> > 95%   530  2.8G - 1,420 total to here, previous was 1,983
>> > 100% 1390 2.85G
>> > During the writing phase RAM fell to 1.6G
>> > What is being freed in the writing phase??
>> 
>> entry->delta_data is the only thing I can think of that are freed
>> in the function that have been allocated much earlier before entering
>> the function.
>
> Yet all ->delta-data instances are limited to 256MB according to Jon's 
> config.

Maybe address space fragmentation is involved here? malloc/free for large areas works using mmap in glibc. There must be enough _contiguous_ space for a new allocation to succeed.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum