> Basically it looks like it is lcp problem and routing - dont know how this > tests are done for lcp but it looks like those tests are like > 1. load 900k routes > 2. connect to traffic generator - and push 10Mpps (and dont check if You > have any reply) or more from one single ip src to one single dst and > viola... but it is not working like this :)
Not sure which tests you refer to, but we run different kind of tests in CSIT, the one I linked to earlier is the most basic one with a few routes and packets matching those routes - basically everything is in cache and is the fastest. It's a good test to check whether there is a problem with the hardware etc. But we also have other tests where we make sure we keep hitting routes outside of the cache too: http://csit.fd.io/trending/#eNrlkk0OwiAQhU-DGzNJwdKuXKi9h0EYbWN_CKBpPb20MU6b6M6dCyDkm3mPecGHzuHRY71lcs_yPRN5ZeLGNrt1PO7WgmhB1z3wJLmgsFz3UmYKnGkUVDaFLD0B14ChHG9xea1qFMkVXGugNW5UE4dRzdzCQpqILQci3w2pQTlU1BFdCQX0M5vP76Lqs1MN-uqB1BInIq5jPoS4XvqEwc7oa9i8mCp-H6b9pzDtO0xZrNrONdMPlcUTMTq7vg This one uses 20K routes and random prefixes. I expect things to be a bit slower because of bond + vlan (which both takes some processing), but it should not be more than 10%... > So it looks like interface busy with RX-traffix is ok - problem is > when interface is mostly TX-ing traffic RX-ed from other interface... but > dont know how to check what is causing it ... ethtool -S for any interface > is showing no errors/drops at interface lvl. Is that between 2 different physical interfaces, in 2 different PCI slots? If so, are they connected to different NUMA nodes? Can you share the output of 'sh err', 'sh hard', 'sh pci', 'sh thr'? Best ben
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