Date: Fri, 25 May 2007 07:49:46 -0500 From: Eric Anderson <anderson@freebsd.org> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: Roman Divacky <rdivacky@freebsd.org>, current@freebsd.org Subject: Re: size of kernel after gcc4.2 upgrade Message-ID: <4656DB6A.1010100@freebsd.org> In-Reply-To: <20070525135416.7u2tw5ibtwwogko8@webmail.leidinger.net> References: <20070525095146.GA45288@freebsd.org> <20070525105203.GB6500@rambler-co.ru> <20070525135416.7u2tw5ibtwwogko8@webmail.leidinger.net>
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On 05/25/07 06:54, Alexander Leidinger wrote: > Quoting Ruslan Ermilov <ru@FreeBSD.org> (from Fri, 25 May 2007 > 14:52:03 +0400): > >> On Fri, May 25, 2007 at 11:51:46AM +0200, Roman Divacky wrote: >>> hi >>> >>> I just noticed that >>> spravci ~# ls -l /boot/kernel*/kernel >>> -r-xr-xr-x 1 root wheel 3389971 May 18 12:03 /boot/kernel.old/kernel* >>> -r-xr-xr-x 1 root wheel 5211345 May 25 11:47 /boot/kernel/kernel* >>> >>> ie. after gcc42 import the kernel size increased roughly by 60% thats >>> a little too much. is there any forgotten option or something that >>> makes the kernel grow so big? >>> >> My numbers are different (1% for the GENERIC kernel, and this >> is with all code changes in-between): >> >> -r-xr-xr-x 1 root wheel 8942239 Apr 11 16:20 kernel.old/kernel >> -r-xr-xr-x 1 root wheel 9035021 May 24 16:23 kernel/kernel >> >> bde@ also reported a 1% code bloat in another thread, so I think >> you should look at your own changes. > > My minimal kernel without additional changes shows: > -r-xr-xr-x 1 root wheel 2.5M 7 Apr 17:22 /boot/kernel.old/kernel* > -r-xr-xr-x 1 root wheel 8.1M 7 Apr 17:22 /boot/kernel.old/kernel.symbols* > -r-xr-xr-x 1 root wheel 3.9M 24 Mai 18:46 /boot/kernel/kernel* > -r-xr-xr-x 1 root wheel 14M 24 Mai 18:46 /boot/kernel/kernel.symbols* > > But this is with debugging (-g) enabled. How's the .symbols generated? > Can there be some new stuff in the kernel which needs to be handled in > the .symbols file generation? Hmm. Here's mine, with debugging, without WITNESS, or INVARIANTS: $ ls -alh kernel*/kernel -r-xr-xr-x 1 root wheel 7.2M Apr 24 10:24 kernel.old/kernel -r-xr-xr-x 1 root wheel 8.1M May 21 11:22 kernel/kernel Also - are you compiling in hints, or not? Eric
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