Re: Valgrind runs way slower on faster PC

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From: David Faure <[email protected]>
To: [email protected]
Cc: Lev Yudalevich <[email protected]>
Subject: Re: [Valgrind-users] Valgrind runs way slower on faster PC
Date: Mon, 10 Feb 2025 10:54:19 +0100
Message-ID: <11612347.nUPlyArG6x@asterixp15>
Organization: KDE
MIME-Version: 1.0

On Monday, 10 February 2025 09:44:39 Lev Yudalevich wrote:
> My first PC has i7-6700K @ 4.00GHz x 8 CPU, 32GiB RAM
> My second PC has i7-10700 @ 2.90GHz x 16 CPU, 64GiB RAM
> Both machines have identical OS installation (Ubuntu 22.04.5 LTS) rest of
> the software (toolchains etc).
> However, running Valgrind (version 3.25.0.GIT) with the same test program
> on a second (presumably more powerful) machine is more than twice slower
> than running the same on the first machine. What can be a reason for this?
> I'd really appreciate any hint/help/idea. Thank you. Lev.

2.9 GHz < 4.0 GHz so it seems to me the second PC has a slower CPU.
Assuming that the program is single-threaded, this explains why the second 
machine is actually slower.

-- 
David Faure, [email protected], http://www.davidfaure.fr

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