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. Best regards -- Christian Helmuth Genode Labs http://www.genode-labs.com/ · http://genode.org/ https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/ 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
