*** Bug 1052976 has been marked as a duplicate of this bug. ***
Toni have made a significant progress, and all his patches are merged into the master branch. However, they are quite intrusive, and I would prefer not to backport them to the 3.4 branch. Unless this issue is extremely urgent for a customer, I suggest waiting for rhev-3.5.
I verified that bug on RHEV-M 3.5.0-0.27.el6ev (build vt13.5) RHEL - 6Server - 6.6.0.2.el6 KVM - 0.12.1.2 - 2.448.el6 libvirt-0.10.2-46.el6_6.1 vdsm-4.16.8.1-4.el6ev First of all I changed default ovirt configuration vdsHeartbeatInSeconds from 10 sec to 60 sec. Other host became not functional (forever in Connecting state). I created and attached to host 1000 vlans and ran simple script which performs 100 times command getVdsCaps and measure time: #!/bin/bash for x in {1..100}; do STARTTIME=`date +%s.%N` vdsClient -s 0 getVdsCaps ENDTIME=`date +%s.%N` TIMEDIFF=`echo "$ENDTIME - $STARTTIME" | bc | awk -F"." '{print $1"."substr($2,1,3)}'` echo "$TIMEDIFF" >> getVdsCaps_1000_networks.csv done I got following results: - min: 21.76 sec - average: 59.28 sec - max: 3268.48 sec During script running I got 2 very slow times: 340.66 sec and 3268.48 sec. See attached graph: getVdsCaps_graph.jpg I measured response time of REST API calls during population of vlans - Create Netowrks: /api/networks/ - Attach Network to cluster: /api/clusters/${cl_id}/networks - Attach Network to Host NIC: /api/hosts/${host_id}/nics/${dummy_id}/attach Here is the results (msec): Count Average 90% Min Max Create Networks 1000 45 55 29 1132 Attach Network to Cluster 1000 51 63 33 190 Attach Network to Host NIC 1000 18116 35448 808 41075 See attached graph: RT_AddNetwork.png
Created attachment 975935 [details] getVdsCaps Graph
Created attachment 975936 [details] RT_AddNetwork graph
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/RHBA-2015-0159.html