4 ms·

Even 4k is a lot, and whatever memory is committed stays committed (and worse, it may even be paged). Perhaps it would be possible for the kernel to uncommit un

by pron 7y ago

Even 4k is a lot, and whatever memory is committed stays committed (and worse, it may even be paged). Perhaps it would be possible for the kernel to uncommit unused stack pages, but I don't think kernels want to assume threads never access memory below their stack pointer.

deleted 7y ago
[deleted]
garmaine 7y ago
Oh I agree OS threads a really heavyweight and there is a real need for fibers / green threads. I think we're arguing over whether they are 100x more efficient or 10,000x more efficient. Details matter ;) Thanks for your work on this for Java!
- lostmsu 7y ago
  I think you severely overestimate the efficiency gain both times.
  - garmaine 7y ago
    It's a bit dated, but here's a reference: https://blog.tsunanet.net/2010/11/how-long-does-it-take-to-make-context.html https://blog.tsunanet.net/2010/11/how-long-does-it-take-to-m...