Messages in this thread | | | Subject | Re: [PATCH 1/3] Kernel interfaces for multiqueue aware socket | From | Eric Dumazet <> | Date | Thu, 16 Dec 2010 06:00:27 +0100 |
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Le jeudi 16 décembre 2010 à 09:52 +0800, Junchang Wang a écrit : > On Thu, Dec 16, 2010 at 4:48 AM, Eric Dumazet <eric.dumazet@gmail.com> wrote: > >> With this patch, the user-space receiving speed on a Intel SR1690 server with > >> a single L5640 6-core processor and a single ixgbe-based NIC goes from 0.73Mpps > >> to 4.20Mpps, nearly a linear speedup. A Intel SR1625 server two E5530 4-core > >> processors and a single ixgbe-based NIC goes from 0.80Mpps to 4.6Mpps. We noticed > >> the performance penalty comes from NUMA memory allocation. > >> > > > > ??? please elaborate on these NUMA memory allocations. This should be OK > > after commit 564824b0c52c34692d (net: allocate skbs on local node) > > > Hi Eric, > Commit 564824b0c52c34692d had been used in the experiments, but the problem > remained unsolved. > > SLUB was used, and both servers were equipped with 8G physical memory. > Is there any > additional information I can provide? >
Yes, sure, you could provide a description of the bench you used, and data you gathered to make the conclusion that NUMA was a problem.
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