On May 24, 2014, at 5:10 PM, Maxim Kuvyrkov <maxim.kuvyr...@linaro.org> wrote:
> Hi, > > I have tried out a prototype of using binfmt_misc, and it does not appear to > be a worthwhile solution at this point. > > Bottom line: with a nice fast multi-core x86 server and a pool of ARM boards > we can test GCC in ~20min. > > Testing setup: > - Core i3 2-core host > - Chromebook 2-core target, SSD disk > - WiFi network > - GCC mainline built from sources with same flags both natively and cross: C, > C++, Fortran. > > General observations about testing ARM toolchains: > > - When testing natively target is busy 100%: around 50% of time is spent > compiling testcases, 40-45% in dejagnu/expect, 5-10% on actual test > execution. Target is the bottleneck. > -- 21633.22user 4400.13system 4:13:11elapsed > > - With testing cross using standard rsh_prog=ssh, rcp_prog=scp, target is > busy 40% of the time: 30% on ssh, 10% on actual test execution. Host is the > bottleneck. > -- -- 9093.65user 2574.72system 1:14:28elapsed > > - When testing cross (using method below) target is busy only 15-20% of the > time: 10% on ssh and 10% on actual test execution. Host is the bottleneck. > -- 9490.16user 2882.54system 1:10:57elapsed > -- Maxim Kuvyrkov www.linaro.org _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
