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

[Andrew Burgess <aburgess@redhat.com>]

Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> writes:

> 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...

I pushed to master and gdb-18-branch.

Thanks,
Andrew