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This bug has been copied from bug #631833 and has been proposed to be backported to 6.0 z-stream (EUS).
verified on hp-dl380g7-01.lab.eng.brq.redhat.com with 2.6.32-71.34.1.el6.x86_64 netperf -H 172.16.20.21 -L 172.16.20.11 -t TCP_CRR TCP Connect/Request/Response TEST from 172.16.20.11 (172.16.20.11) port 0 AF_INET to 172.16.20.21 (172.16.20.21) port 0 AF_INET : histogram : interval Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 3306.19 16384 87380 [root@hp-dl380g7-01 ~]# netperf -H 172.16.20.21 -L 172.16.20.11 -t TCP_CRR TCP Connect/Request/Response TEST from 172.16.20.11 (172.16.20.11) port 0 AF_INET to 172.16.20.21 (172.16.20.21) port 0 AF_INET : histogram : interval Local /Remote Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 10.00 3315.89 16384 87380
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2011-1106.html
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: The XFRM_SUB_POLICY feature causes all bundles to be at the finest granularity possible. As a result of the data structure used to implement this, the system performance would drop considerably. This update disables a part of XFRM_SUB_POLICY, eliminating the poor performance at the cost of sub-IP address selection granularity in the policy.