https://bugs.dpdk.org/show_bug.cgi?id=522 Bug ID: 522 Summary: Performance degradation on AWS ena driver Product: DPDK Version: 19.11 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: tudor.cornea@gmail.com Target Milestone: --- Created attachment 115 --> https://bugs.dpdk.org/attachment.cgi?id=115&action=edit AWS ena comparison between 18.11 and 19.11 Greetings, I ran a test with DPDK 19.11 over the AWS ena driver, and seem to get lower performance than with the previous release, 18.11 It seems that more CPU is being spent in ena_com_prepare_tx,compared to the previous release. I have attached a file, containing more detailed measurements OS: Ubuntu 18 AWS Instance Type: C5.4xlarge DPDK 19.11 + pktgen 19.12 Tx Rate: 1800 Mbits/s 18.11 + Pktgen 3.7.0 Tx Rate: 400 Mbits/s Could somebody confirm if there is indeed a degradation between builds, and point me to a possible fix ? Thanks, Tudor -- You are receiving this mail because: You are the assignee for the bug.