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Date: Fri, 22 Jul 2016 11:14:06 -0500 From: Bjorn Helgaas <helgaas@...nel.org> To: Muni Sekhar <munisekharrms@...il.com> Cc: linux-pci@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, linux-kernel@...r.kernel.org, Stephane Eranian <eranian@...gle.com> Subject: Re: Test throughput on PCIe interface [+cc perf folks] On Fri, Jul 22, 2016 at 05:59:51PM +0530, Muni Sekhar wrote: > Hi All, > > > We have xilinx PCIe endpoint with DMA reference block. > > > The DMA-REF block provides a mechanism to DMA(also supports > Scatter-Gather DMA) transfer data at the maximum rate between host > (CPU) memory and a FIFO in the DMA-REF block. > > > DMA-REF block provides the loopback. The intention is to use this > block in production and self-test, to check that the PCIe bus is > operating at the expected maximum transfer speed. > > > Does kernel has any standard utilities to test throughput on PCIe interface? I know some PCIe controllers devices do have performance monitors, and perf might support some of them, but I don't know any details. Bjorn
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