On 13/02/2018 17:26, Christian Borntraeger wrote: >> The test takes fairly long, especially because we only have 128MB of ram >> and allocate 3 times in a row ~100mb of virtual memory. > > Does it make sense to change the memory size in the unittests.cfg file? e.g. via extra_params? The test takes 5 seconds on x86 KVM and about a minute on TCG (lots of TLB misses). Maybe it's an s390-specific bug in the test? Thanks, Paolo