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List:       netbsd-bugs
Subject:    Re: toolchain/57799: amd64 builds are unbearbly slow
From:       Martin Husemann <martin () duskware ! de>
Date:       2023-12-30 13:05:02
Message-ID: 20231230130502.07F901A923A () mollari ! NetBSD ! org
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The following reply was made to PR toolchain/57799; it has been noted by GNATS.

From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: toolchain/57799: amd64 builds are unbearbly slow
Date: Sat, 30 Dec 2023 14:03:35 +0100

 Two observations:
 
  - nothing has "seriously" changed recently to get into this situation,
    but the builds have always been very close to the limit. Last working
    HEAD build was:
 
 	HEAD-llvm:202312111450Z amd64 b41 13711 passed
 
    (that is 13711 seconds, with 4h = 14400s being the current limit)
 
  - the gcc builds are a bit faster, after mrg reworked the amount/detail
    of debug info that is generated for the C++ parts of the compiler
    some time ago - but they are not very much faster, example:
 
 	HEAD:202312291920Z amd64 b44 12255 passed
 
 So the real problem is: amd64 builds in general are extremely slow.
 Other builds are way faster, e.g. alpha (which has no 32bit compat):
 
 	HEAD:202312290600Z alpha b43 5408 passed
 
 but also sparc64, which has 32bit compat (but no llvm compiled GPU stuff):
 
 	HEAD:202312291920Z sparc64 localhost 5845 passed
 
 but here the difference to an llvm build is even more significant:
 
 	HEAD-llvm:202312291450Z sparc64 b48 8697 passed
 
 
 
 For now I have raised the time limit to 4.5h
 
 Martin
 
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