On Mon, 14 Mar 2022 at 19:44, Peter Maydell <peter.mayd...@linaro.org> wrote: > On Mon, 14 Mar 2022 at 18:58, Peter Maydell <peter.mayd...@linaro.org> wrote: > > I just hit the abort case, narrowing it down to the > > /i386/migration/multifd/tcp/zlib case, which can hit this without > > any other tests being run: > > > This test seems to fail fairly frequently. I'll try a bisect... > > On this s390 machine, this test has been intermittent since > it was first added in commit 7ec2c2b3c1 ("multifd: Add zlib compression > multifd support") in 2019.
I have tried (on current master) runs of various of the other migration tests, and: * /i386/migration/multifd/tcp/zstd completed 1170 iterations without failing * /i386/migration/precopy/tcp completed 4669 iterations without failing * /i386/migration/multifd/tcp/zlib fails usually within the first 10 iterations (the most I ever saw it manage was 32) So whatever this is, it seems like it might be specific to the zlib code somehow ? thanks -- PMM