I just confirmed that this is due to memory allocation locking in the kernel. If your places do no allocation then all is fine.
Paulo Matos On 08/10/2018 21:39, James Platt wrote: > I wonder if this has anything to do with mitigation for Spectre, Meltdown or > the other speculative execution vulnerabilities that have been identified > recently. I understand that some or all of the patches affect the > performance of multi-CPU processing in general. > > James > -- Paulo Matos -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.