Martin Husemann <mar...@duskware.de> wrote: > So here is a more detailed analyzis using flamegraphs: > > https://netbsd.org/~martin/bc-perf/ > > > All operations happen on tmpfs, and the locking there is a significant > part of the game - however, lots of mostly idle time is wasted and it is > not clear to me what is going on.
Just from a very quick look, it seems like a regression introduced with the vcache changes: the MP-safe flag is set too late and not inherited by the root vnode. http://www.netbsd.org/~rmind/tmpfs_mount_fix.diff -- Mindaugas