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authorDamjan Marion <damarion@cisco.com>2016-06-26 20:16:57 +0200
committerDave Barach <openvpp@barachs.net>2016-06-28 15:08:45 +0000
commita06dfb39c6bee3fbfd702c10e1e1416b98e65455 (patch)
tree2f1e4dc672f0f3af8bfce51aa644618e72d15013 /build-data
parent310dca43a3d0c1a541d91f54a8034401c702c8e5 (diff)
Reduce ring size for dpdk NICs and overtal mem footprint
Size of interface descriptor rings have direct impact on Last Level Cache utilization, and can significantly affect performance. So generally having smaller ring size is good idea as long as there is enough buffer in the ring to accomodate line rate. Here we are reducing rings sizes to 1024 which is still bigger than lab verified 512 buffers per ring. Indirectly, this also affects memory footprint, as we can have smaller buffer allocation, which is now 16384 (previously it was 32768) This patch also fixes issue with i40e vector PMD which was leaking buffers when previous default ring sizes were set. Change-Id: I58fb40586304b2f0cb5de9a444055da3cd3acb53 Signed-off-by: Damjan Marion <damarion@cisco.com>
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