Re: 64-bit emacs crashes a lot

[Angelo Graziosi <angelo.graziosi@alice.it>]

Il 18/08/2013 19.43, Ken Brown ha scritto:
> On 8/17/2013 6:23 PM, Angelo Graziosi wrote:
>> Il 17/08/2013 22.16, Ken Brown ha scritto:
>>>
>>> This probably means that the static heap isn't big enough for
>>> --enable-checking=all on 32-bit Cygwin.  I'll test it and increase it if
>>> necessary.  I may not get to this today, but I'll do it soon.  (And you
>>> can do it yourself locally if you're anxious to bootstrap right now.)
>>
>> OK, with 18MB it is still bootstrapping and has printed:
>>
>> ...
>> Finding pointers to doc strings...done
>> Dumping under the name emacs
>> Static heap usage: 16099796 of 18874368 bytes
>> ...
>>
>> but... really should we increase the static heap from 13 to 18 MB also
>> for a not-checking bootstrap?
>
> No.  I made the increase to 18 conditional on ENABLE_CHECKING.
>
>> Usually, in that case, the build log shows
>>
>> ...
>> Static heap usage: 10273280 of 13631488 bytes
>> ...
>> Static heap usage: 5419520 of 13631488 bytes
>>
>>
>> Doesn't it mean that the "end" product uses only about 5.2 MB?
>
> Yes, but you still need a bigger static heap for bootstrapping.  While
> bootstrap-emacs is being built, many *.el files get loaded, and this
> requires a large static heap.  Then bootstrap-emacs byte-compiles those
> files.  Now when emacs is built, the smaller *.elc files can be used, so
> a smaller static heap suffices for that second step.
>
> By the way, it just occurred to me that the "static heap usage" report
> isn't very informative.  It shows how much of the static heap is in use
> at the time emacs (or bootstrap-emacs) is dumped, but there might have
> been more in use and then freed at some earlier stage.  I changed
> sheap.c:report_sheap_usage so that it reports the maximum usage, since
> this is what determines how big the static heap needs to be.


All this sounds good.. and interesting.. Thanks!


Ciao,
  Angelo.