Re: [PATCH] Reduce gdb.base/many-headers.c iterations on Solaris [PR34555]

[Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>]

Hi Andrew,

> Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> writes:
>
>> As detailed in PR corefiles/34555, when reading the core file in the
>> gdb.base/many-headers.exp test, gdb consumes excessive amounts of memory
>> on Solaris.  If left unchecked, e.g. with ulimit -Sv 8388608, the test
>> will consume all available swap space.  Since Solaris doesn't do lazy
>> allocation, this will cause the system to become unusably slow.
>>
>> To avoid this, this patch reduces the iteration count by a factor of 100.
>>
>> Tested on sparcv9-sun-solaris2.11, x86_64-pc-solaris2.11, and
>> x86_64-pc-linux-gnu.
>>
>> Ok for trunk and the gdb-18 branch?
>>
>>
>> AFAICT, the issue is purely in gdb's Solaris corefile reader, which
>> seems to need a complete rewrite rather than a couple of bugfixes.
>
> Hi Rainer,
>
> How would you feel about the patch below being pushed?
>
> This skips the gdb.base/many-headers.exp test on Solaris.  This should
> prevent the memory exhaustion issues you are hitting, while not changing
> the underlying purpose of the test.

I'm perfectly fine with that as I'd already indicated when you first
suggested something similar:

	https://sourceware.org/pipermail/gdb-patches/2026-September/230180.html

Thanks for following up on this: I'm currently pretty swamped...

	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University