On 01/28/2014 12:59 PM, Christian Helmuth wrote: > Hello Anna, > > welcome to the list ;-) > > On Tue, Jan 28, 2014 at 02:58:35PM +0400, Анна Будкина wrote: >> I'm measuring throughput between two hosts. I use genode running on >> fiasco.OC on one machine and monolithic Linux on another machine. There's >> 82579LM NIC on each host. I'm running netperf_lxip.run script. As acpi >> driver doesn't work on my machine i'm using pci_drv driver. Another problem >> is that level-triggered interrupts are not recieved and i'm polling >> interrupts in the internal cycle in /os/src/lib/dde_kit/interrupt.cc: > [...] > > I was slightly astonished by the bad benchmark results. So, I tried > today's Genode master with the following scenario: > > * Genode on Lenovo T61 (82566mm, PCIe 8086:1049) > * Linux on T410 (82577LM, PCIe 8086:10ea) > > With your patch I got > > ! PERF: TCP_STREAM 2.02 MBit/s > ! PERF: TCP_MAERTS 8.00 MBit/s > > This substantiates my assumption that your implemented "polling" > degrades the performance significantly. The original code without > polling produces > > ! PERF: TCP_STREAM 65.59 MBit/s > ! PERF: TCP_MAERTS 543.35 MBit/s > > which is no top-notch result, but looks more promising. We did not > investigate the performance drop on TCP_STREAM up to now, but suspect > the NIC driver or its integration to be the cause. >
Thanks for your tests! But I don't like the 65 MBit/s thing! What is going on? Is this RX or TX? Sebastian -- Sebastian Sumpf Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ Genode-main mailing list Genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main
