Red Hat Bugzilla – Bug 1364190
Change example in /etc/sysconfig/dirsrv to use tcmalloc
Last modified: 2016-11-03 16:44:46 EDT
tail -n 5 /etc/sysconfig/dirsrv # jemalloc is a general purpose malloc implementation that emphasizes # fragmentation avoidance and scalable concurrency support. jemalloc # has been shown to have a significant positive impact on the Directory # Server's process size/growth. #LD_PRELOAD=/usr/lib64/dirsrv/libjemalloc.so.1 ; export LD_PRELOAD This should be changed to tcmalloc. Change is required by https://bugzilla.redhat.com/show_bug.cgi?id=1301224
Upstream ticket: https://fedorahosted.org/389/ticket/48950
Fixed upstream
Aug 22 19:16:00 rhel7ds.brq.redhat.com ns-slapd[2675]: ERROR: ld.so: object ';' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 19:16:00 rhel7ds.brq.redhat.com ns-slapd[2675]: ERROR: ld.so: object 'export' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 19:16:00 rhel7ds.brq.redhat.com ns-slapd[2675]: ERROR: ld.so: object 'LD_PRELOAD' from LD_PRELOAD cannot be preloaded: ignored. Line in /etc/sysconfig/dirsrv should be changed to: LD_PRELOAD=/usr/lib64/libtcmalloc.so.4 After this change there are no errors in journalctl and: [root@rhel7ds ~]# pldd $(pidof ns-slapd) | grep tcmalloc /usr/lib64/libtcmalloc.so Marking as ASSIGNED.
Hi Viktor, I'm a bit confused. This is our suggestion to enable tcmalloc, which looks identical to the line you put in your comment #c4. What else we could do? diff --git a/ldap/admin/src/base-initconfig.in b/ldap/admin/src/base-initconfig.in index e803a36..0481c3e 100644 --- a/ldap/admin/src/base-initconfig.in +++ b/ldap/admin/src/base-initconfig.in @@ -43,8 +43,8 @@ # if using systemd, omit the "; export VARNAME" at the end #PID_TIME=600 ; export PID_TIME -# jemalloc is a general purpose malloc implementation that emphasizes -# fragmentation avoidance and scalable concurrency support. jemalloc -# has been shown to have a significant positive impact on the Directory -# Server's process size/growth. -#LD_PRELOAD=@libdir@/@package_name@/libjemalloc.so.1 ; export LD_PRELOAD +# The tcmalloc memory allocator has been shown to have a positive impact on +# the Directory Server's virtual & resident memory size/growth. tcmalloc is +# available on RHEL/Fedora in the gperftools package (this could be different +# on other platforms). Here is an example of preloading tcmalloc: +#LD_PRELOAD=@libdir@/libtcmalloc.so.4 ; export LD_PRELOAD
LD_PRELOAD=/usr/lib64/libtcmalloc.so.4 ; export LD_PRELOAD ^^^^^^^^^^^^^^^^^^^ This part confuses systemd. Error are logged in journalctl on dirsrv startup: Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object ';' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'export' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'LD_PRELOAD' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object ';' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'export' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'LD_PRELOAD' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object ';' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'export' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'LD_PRELOAD' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object ';' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'export' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ds_systemd_ask_password_acl[4891]: ERROR: ld.so: object 'LD_PRELOAD' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ns-slapd[4897]: ERROR: ld.so: object ';' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ns-slapd[4897]: ERROR: ld.so: object 'export' from LD_PRELOAD cannot be preloaded: ignored. Aug 22 20:13:51 rhel7ds.brq.redhat.com ns-slapd[4897]: ERROR: ld.so: object 'LD_PRELOAD' from LD_PRELOAD cannot be preloaded: ignored.
(In reply to Viktor Ashirov from comment #6) > LD_PRELOAD=/usr/lib64/libtcmalloc.so.4 ; export LD_PRELOAD > ^^^^^^^^^^^^^^^^^^^ Oh my... Sorry, I should have looked at the error logs more closely... I've reopened the upstream ticket, as well...
In a systemd environment file, you must use LD_PRELOAD=/usr/lib64/libtcmalloc.so.4 You cannot use the old sysvinit/bash style: LD_PRELOAD=/usr/lib64/libtcmalloc.so.4 ; export LD_PRELOAD
Build tested: 389-ds-base-1.3.5.10-10.el7.x86_64 Text was changed to: # The tcmalloc memory allocator has been shown to have a positive impact on # the Directory Server's virtual & resident memory size/growth. tcmalloc is # available on RHEL/Fedora in the gperftools-libs package (this could be # different on other platforms). # If using systemd, omit the "; export LD_PRELOAD" at the end. LD_PRELOAD=/usr/lib64/libtcmalloc.so.4 ; export LD_PRELOAD Marking as VERIFIED.
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, 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://rhn.redhat.com/errata/RHSA-2016-2594.html