On 10/10/2019 13.16, Philippe Mathieu-Daudé wrote: > On 10/10/19 11:38 AM, Thomas Huth wrote: >> On 09/10/2019 21.04, Philippe Mathieu-Daudé wrote: >>> On 10/9/19 7:07 PM, Thomas Huth wrote: >>>> The "command -v ccache && ccache ..." likely were supposed to test >>>> the availability of ccache before running the program. But this >>>> shell construct causes Travis to abort if ccache is not available. >>> >>> Oops. >>> >>> Why can't you install ccache if these are Ubuntu systems? >>> It is even more wanted if the arm64 machine are slow... >> >> I just tried to add "ccache" to the list of packages that should be >> installed, but I don't see a difference in the runtime. >> >> First run with ccache enabled: >> >> https://travis-ci.com/huth/qemu/jobs/244117945 >> >> Second run where I'd expect a speedup: >> >> https://travis-ci.com/huth/qemu/jobs/244124599 >> >> The statistics at the end say that it had only 1 cache hit. Any ideas >> what might be wrong here? > > Looking there and your following commit > (https://github.com/huth/qemu/commit/eaf80e7851) I see you already > figured this out :)
No, that was just a try, but it did not change anything: https://travis-ci.com/huth/qemu/jobs/244137697#L5813 But I also noticed that in the arm64 builds, the cache information is missing: https://travis-ci.com/huth/qemu/jobs/244137697#L1844 ... so I assume that ccache support needs to be supported in the image that is provided by Travis, and you can not simply install it afterwards. So this is likely just a quirk that hopefully will be fixed by Travis later (arm64 is still marked as "alpha" there if I've got that right). Thomas
