> On Jul 24, 2015, at 3:16 AM, Susan Hinrichs > <shinr...@network-geographics.com> wrote: > > Hello, > > Another latent cross-thread race condition has become very active in our > environment (TS-3797). Given that we just spent time within the last month > squashing another cross thread race condition (TS-3486) that was active in > several environments, Alan and I would like to step back and try to reduce > the cross thread impact of the global session pools. > > I wrote up our thoughts and plan for implementation. Given that threading > and race conditions are always tricky, I'd appreciate more eyes looking for > flaws in our approach or suggestions for alternatives. > > https://cwiki.apache.org/confluence/display/TS/Threading+Issues+And+NetVC+Migration
My gut reaction to this is that this makes our efforts for NUMA / thread affinity very, very difficult to achieve. The goal is to avoid memory migrating cross NUMA sockets, to avoid QPI traffic. This would encourage the opposite unless I misread it ? It also obviously violates the original design goals, where VCs do *not* migrate. It’d be very interesting to hear from John Plevyak and what their initial design had considered for these issues? Cheers, — Leif
