On Thu, Jul 26, 2018 at 05:32:32PM +0200, Igor Gnatenko wrote:
On Thu, Jul 26, 2018 at 5:29 PM Florian Weimer
<fweimer(a)redhat.com> wrote:
> I would like to request a change of the Packaging Guidelines, advising
> packagers not to interpose malloc.
>
> The reasons are:
>
> * We have resources to support glibc malloc, but not for other mallocs.
> * Other mallocs do not follow ABI and provide insufficient alignment.
> * Choosing a malloc is workload-dependent and forcing a non-default
> malloc takes options away from system administrators.
>
> This does not concern other allocators, such as Boehm GC or APR, only
> the standard malloc interfaces.
>
How does one detect that some other allocator is used? Do we have some
automated tools? Do you have a draft?
If you know the other malloc impl, you can do a dnf query. For example
gperftools ships the tcmalloc impl. Looking at the ELF symbol it provides,
we can query for its usage thus:
# dnf repoquery --whatrequires 'libtcmalloc.so.4()(64bit)'
389-ds-base-0:1.4.0.6-2.fc28.x86_64
389-ds-base-libs-0:1.4.0.6-2.fc28.x86_64
389-ds-base-snmp-0:1.4.0.6-2.fc28.x86_64
Pound-1:2.7-3.fc24.x86_64
bro-core-0:2.5.3-2.fc28.x86_64
ceph-base-1:12.2.4-1.fc28.x86_64
ceph-base-1:12.2.7-1.fc28.x86_64
ceph-common-1:12.2.4-1.fc28.x86_64
ceph-common-1:12.2.7-1.fc28.x86_64
ceph-fuse-1:12.2.4-1.fc28.x86_64
ceph-fuse-1:12.2.7-1.fc28.x86_64
ceph-mds-1:12.2.4-1.fc28.x86_64
ceph-mds-1:12.2.7-1.fc28.x86_64
ceph-mgr-1:12.2.4-1.fc28.x86_64
ceph-mgr-1:12.2.7-1.fc28.x86_64
ceph-mon-1:12.2.4-1.fc28.x86_64
ceph-mon-1:12.2.7-1.fc28.x86_64
ceph-osd-1:12.2.4-1.fc28.x86_64
ceph-osd-1:12.2.7-1.fc28.x86_64
ceph-radosgw-1:12.2.4-1.fc28.x86_64
ceph-radosgw-1:12.2.7-1.fc28.x86_64
ceph-test-1:12.2.4-1.fc28.x86_64
ceph-test-1:12.2.7-1.fc28.x86_64
gperftools-devel-0:2.6.3-2.fc28.x86_64
mongodb-0:3.6.3-1.fc28.x86_64
mongodb-server-0:3.6.3-1.fc28.x86_64
Regards,
Daniel
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