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Re: [PATCH v4 08/12] tests/vm: add 1GB extra memory per core


From: Richard Henderson
Subject: Re: [PATCH v4 08/12] tests/vm: add 1GB extra memory per core
Date: Tue, 12 Jul 2022 09:30:27 +0530
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1

On 7/8/22 21:04, John Snow wrote:
If you try to run a 16 or 32 threaded test, you're going to run out of
memory very quickly with qom-test and a few others. Bump the memory
limit to try to scale with larger-core machines.

Granted, this means that a 16 core processor is going to ask for 16GB,
but you*probably*  meet that requirement if you have such a machine.

512MB per core didn't seem to be enough to avoid ENOMEM and SIGABRTs in
the test cases in practice on a six core machine; so I bumped it up to
1GB which seemed to help.

Add this magic in early to the configuration process so that the
config file, if provided, can still override it.

Signed-off-by: John Snow<jsnow@redhat.com>
Reviewed-by: Daniel P. Berrangé<berrange@redhat.com>
---
  tests/vm/basevm.py | 5 +++++
  1 file changed, 5 insertions(+)

Acked-by: Richard Henderson <richard.henderson@linaro.org>



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