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To: cygwin AT cygwin DOT com
Subject: Re: Apache rebase trouble
References: <op DOT y0nqlhgwaqc5s6 AT orion DOT localdomain> <877f17jxua DOT fsf AT Rainer DOT invalid> <op DOT y0piqvvcaqc5s6 AT orion DOT localdomain> <87poezibkr DOT fsf AT Rainer DOT invalid> <op DOT y0pjzuz3aqc5s6 AT orion DOT localdomain> <op DOT y0prhbrfaqc5s6 AT orion DOT localdomain> <CAOC2fq-9TSLxCH5e+qG4VZHhf56et3t-Oc5WKW+u0UcsrRaxMg AT mail DOT gmail DOT com>
Date: Thu, 25 May 2017 16:54:19 +0200
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From: "Michael Lemke" <lemkemch AT t-online DOT de>
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On Wed, 24 May 2017 01:56:55 +0200, Michael Enright <mike AT kmcardiff DOT com> wrote:

> On Tue, May 23, 2017 at 3:59 PM, Michael Lemke wrote:
>>
>> Lacking further clues I did the trial and error thing and removed some
>> stuff I thought I didn't need (like GNOME). Not sure yet what I broke but
>> my Apache is working again.  Thanks for the hint that the number of known
>> dlls could be a problem. I'd still appreciate more precise information
>> of how rebase works and if there is a more systematic approach.
>>
>
> The command rebase -is gives a list of the DLLs, their sizes and where
> they are based.
> The DLL size is in "field 5" as 'sort' recons fields, so
> rebase -is | sort -k5 will dump the DLLs in size order.

Thank you. So if I take the first and last line of rebase's default output
the difference in the 3rd field tells me how much space is required,
correct?  In my cleaned up installation it is 879.5 MB.  Is it possible to
give a limit up to which this number may grow?  Exactly what memory/address
space is being reserved here?

> On my system the last DLL in the output is an LLVM DLL which I believe
> is used by the X server. A lot of the top DLLs appear to be related to
> the X server, some of those are code-generation DLLs for the LLVM JIT
> to use. The footprint of the X server seems large.

In my installation LLVM takes up a lot (and for some reason I have three
different versions installed - have to get rid of some) but the biggest
is qt4:


  orion> rebase -si | sort -k5 | tail
/usr/lib/cygswrAVX2.dll                                                                                                                   base 0x45290000 size 0x00c7c000
/usr/bin/cygLLVM-3.0.dll                                                                                                                  base 0x6e710000 size 0x00cab000
/usr/bin/cygavcodec-54.dll                                                                                                                base 0x5f710000 size 0x00d79000
/usr/bin/cygLLVM-3.4.dll                                                                                                                  base 0x6c310000 size 0x0116e000
/usr/bin/cygLLVM-3.1.dll                                                                                                                  base 0x6d480000 size 0x0128a000
/usr/bin/cygicudata56.dll                                                                                                                 base 0x58060000 size 0x017ed000
/usr/bin/cygicudata57.dll                                                                                                                 base 0x567d0000 size 0x01885000
/usr/bin/cygwebkitgtk-3.0-0.dll                                                                                                           base 0x49660000 size 0x01951000
/usr/bin/cygLLVM-3.8.dll                                                                                                                  base 0x6a810000 size 0x01af3000
/usr/bin/cygQtWebKit-4.dll                                                                                                                base 0x63810000 size 0x01eea000
  orion>

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