Description of problem: In bug 1925650, we linked ceph to tcmalloc on s390x for RHCS 4. In RHCS 5, we did the work upstream in https://github.com/ceph/ceph/commit/868a1f1c0c945050120f74b9ae46f1d2b7cd5a35 (v16.2.2), but did not get it downstream. Version-Release number of selected component (if applicable): ceph-16.2.0-117.el8cp Steps to Reproduce: 1. Set up Ceph on s390x 2. Check "ldd /usr/bin/ceph-osd | grep malloc" 3. Note reduced performance Actual results: ldd does not show tcmalloc linked. Cluster performance is reduced. Expected results: ldd shows tcmalloc linked. Cluster performance is the same or better as RHCS 4.
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Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Red Hat Ceph Storage 5.0 Bug Fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:4105