Hi Kent, On 11/14/2012 11:57 AM, Kent A. Reed wrote: > On 11/14/2012 2:19 AM, John Morris wrote: >> While sitting around waiting for the umpteenth time for the Xenomai >> kernel to build, this time with Michael's config just to help narrow >> things down, I compiled up LinuxCNC xenomai-user. >> >> Latency-test works. And on the same kernel that, combined with >> xenomai-kernel, hangs! 64-bit uniprocessor running several glxgears >> (why's that the test we always use?), loading up Firefox with a buggy >> load of saved tabs, compiling that same xenomai kernel and spinning >> shapes around in FreeCAD, latency-test reported 7ms/6ms jitter. > Sorry, John, I lost the bubble. What CPU/motherboard/etc was this?
This is an old Gigabyte GA-M61P-S3 rev. 1.0: http://www.gigabyte.com/products/product-page.aspx?pid=2434#sp - NVidia GeForce 6100 chipset - A suspicious 'model unknown' AMD Athlon 64-bit single core 2.2GHz 1MB cache I got super cheap in Beijing 2007 - 8GB DDR2 RAM, I believe 800MHz - ATI Radeon X1300 Pro video card running two monitors > As for the silly glxgears test, I think the original intent was to use > it as a quick exercise of the X/OpenGL/driver path and perhaps as a > benchmark of the graphics performance if the path works (although > graphics guys are quick to tell us it isn't a benchmark). > > For latency testing purposes, it might help smoke out problems with the > graphics subsystem---some drivers and some chips grab hold of DMA for > example. > > Obviously, we've not thought our way through anything resembling a > proper test suite. At least a 'standardized' load generator would help, something that would be easy for us to run, that would run the same types of loads, collect the same performance stats while running, and collect system hardware and software information. Better would be if the results could be uploaded to a common database. This would get us closer to an objective set of tests, and with a database, would enable analysis to help identify e.g. problem chipsets, problem VGA cards, etc. I've done some of this stuff in the past and could do it again, but this would be quite a bit harder since I don't control the machines under test, which could be running any version of any distro with any sort of customization, and concurrently doing who knows what else at the same time. John ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
