For what it's worth, I've been using DispatchQueue.concurrentPerform on my own projects that run on both Darwin and Linux and it's worked well for both. I haven't noticed the issue you're describing.
Perhaps you could include a repro case that demonstrates this behavior? PS: However, my Swift CLI executables that use this are much slower on Linux, but that's more due to corelibs Foundation than anything related to Dispatch. On Tue, 28 Nov 2017 at 02:55 Spencer Kohan via swift-corelibs-dev < swift-corelibs-dev@swift.org> wrote: > I did some performance testing, and found that while using > concurrentPerform for a set of long running operations resulted in half the > execution time of synchronous code on macOS, on Linux the execution time > was not meaningfully different from the synchronous version. Is this > expected? > > Cheers, > Spencer Kohan > _______________________________________________ > swift-corelibs-dev mailing list > swift-corelibs-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-corelibs-dev >
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