Hi On Fri, May 29, 2020 at 3:31 PM Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote: > > On 2020-05-29 10:08:01 [+0200], Michael Nazzareno Trimarchi wrote: > > Hi all > Hi, > > > I get this stack trace > > echo 3 > /proc/sys/vm/drop_caches chrt -f 99 sysbench --test=cpu --num-threads=2 > > > > First of all, I need to know that if it is a valid use case because > > was raised by the testing team and > > how can I start and where to take a look at it > > Assuming that there is a `;' in front of `chrt' then I wouldn't be > surprised. You are basically keeping two CPUs busy with sysbench at RT > priority and then wondering why the system isn't making any progress. If > it wouldn't be for the RT throttler, you might not even see any output > and box hardware would appear be dead. No, I'm not surprised but my answer to them was not enough. Right now they are executing some bench. Best Michael > > > Best Regards > > Michael > > > > [ 161.709260] 001: sh (480): drop_caches: 3 > > [ 180.234358] 001: sched: RT throttling activated > > [ 180.283363] 001: fec 2188000.ethernet eth0: MDIO read timeout > > [ 180.283406] 001: ------------[ cut here ]------------ > > [ 180.283416] 001: WARNING: CPU: 1 PID: 133 at > > drivers/net/phy/phy.c:716 phy_er > > > > ror+0x24/0x64 > > [ 180.283460] 001: Modules linked in: > > [ 180.283473] 001: CPU: 1 PID: 133 Comm: kworker/1:2 Tainted: G > > W > > This is hard to read. Especially later in that mail. In future please > try to not cut the lines. > > Sebastian -- | Michael Nazzareno Trimarchi Amarula Solutions BV | | COO - Founder Cruquiuskade 47 | | +31(0)851119172 Amsterdam 1018 AM NL | | [`as] http://www.amarulasolutions.com |
