> On Jan 18, 2017, at 8:25 AM, Luca Toscano <toscano.l...@gmail.com> wrote: > > > > 2017-01-18 14:00 GMT+01:00 Jim Jagielski <j...@jagunet.com>: > > > On Jan 18, 2017, at 7:50 AM, Graham Leggett <minf...@sharp.fm> wrote: > > > > On 17 Jan 2017, at 7:40 PM, Luca Toscano <toscano.l...@gmail.com> wrote: > > > >> Since this email thread seems important, is there any update from anybody > >> working on it? It would be great to open a bugzilla task otherwise, to > >> track everything and make sure that we don't forget about it :) > > > > I looked at this a while back - I found that pipelining support is causing > > the blocking. > > > > When we’re handling pipelined requests and we reach a limit, we block. What > > we should be doing instead is looping round back to WRITE_COMPLETION, > > waiting for permission to write again. This should be reasonably > > straightforward to fix, but my financial year end is the end of this month > > so can’t look at this till February. > > > > I suspect pipelining support has been suppressed in v2.4.x event MPM, and > > was at some point “fixed” on trunk, bringing this problem back. > > > > Somewhat on-topic but also off-topic as well, but it does seem > that event on trunk is getting much more fragile instead of more > stable. It seems to be picking up some kruft which is making > event on trunk a *worse* option than what's in 2.4, despite a deeper > async alignment. > > > My 2c view on this is that mpm-event has been getting better during the last > months, but the nature of the changes, together with the fact that we have > not developed a good way to test regressions, causes long running debugging > tasks. In the case of the wake-ups, we are basically testing a new big > feature thanks to live traffic from Stefan Priebe (thanks again for the help > btw!), meanwhile it would be really great to have some sort of test to fake > traffic and spot problems (that would absolutely not substitute the > invaluable user feedback of course). >
That's a good overview... Yeah, it might be getter better, but it does seem that the nature of the bugs implies it's also getting more fragile. Could be, likely is, just my impression due to some weird things I've seen lately on some testing.
