[cfe-dev] Unusually high ram usage on tests

David Blaikie via cfe-dev cfe-dev at lists.llvm.org
Wed Mar 10 22:08:56 PST 2021


sometimes referred to as shared library build in the cmake config, I think

Speeds up building, but slows down test execution, unfortunately - which
balance works best for you may vary/be different from what works best for
other folks.


On Wed, Mar 10, 2021 at 9:41 PM Deep Majumder via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> Btw, how does one enable dynamic linking? I couldn't find such an option
> in CMakeCache.txt.
>
> On Thu, Mar 11, 2021 at 11:09 AM Deep Majumder <
> deep.majumder2019 at gmail.com> wrote:
>
>> Yup, right you are! I had reinstalled my system and forgotten to install
>> lld. Thanks!
>>
>> On Thu, Mar 11, 2021 at 12:59 AM Benics Bal√°zs <benicsbalazs at gmail.com>
>> wrote:
>>
>>> Use `lld` as a linker, it is superior to `ld` or `gold`.
>>> It consumes less memory and much faster.
>>> Also, prefer dynamic linking for faster development cycles.
>>>
>>> Balazs.
>>>
>>>
>>>
>>>
>>> ------------------------------
>>> *From:* cfe-dev <cfe-dev-bounces at lists.llvm.org> on behalf of Deep
>>> Majumder via cfe-dev <cfe-dev at lists.llvm.org>
>>> *Sent:* Wednesday, March 10, 2021 8:17:38 PM
>>> *To:* cfe-dev <cfe-dev at lists.llvm.org>
>>> *Subject:* [cfe-dev] Unusually high ram usage on tests
>>>
>>> Hi everyone,
>>> I am running 'ninja check-clang-analysis' on the release build of clang
>>> with LLVM_PARALLEL_LINK_JOBS set to 2 and assertions off. I am on Ubuntu
>>> 20.04. This is taking up almost 10 gb of memory (6 from ram, 4 from swap).
>>> I have been running this command for over a month and I haven't seen this
>>> sort of memory usage. Is this normal? Or am I missing something?
>>> Warm regards,
>>> Deep
>>>
>> _______________________________________________
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> cfe-dev at lists.llvm.org
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