snaury

4 ms·

1. 1.▲
   Hardening YDB with Jepsen: lessons learned(blog.ydb.tech)

   9 points by snaury 2y ago|0 comments
2. 2.▲
   by snaury 3y ago

   C++ ABI has some per-thread globals: the number that is returned from std::uncaught_exceptions(), and the chain of currently caught exceptions. For example in llvm this is available with a cxa_get_globals call: https://github.com
3. 3.▲
   by snaury 3y ago

   Unfortunately in 2023 c++20 coroutines are just barely starting to become usable. Compilers have bugs, especially with symmetric transfer, e.g. msvc doesn't suspend until await_suspend returns (which causes races and double-frees), gcc
4. 4.▲
   by snaury 3y ago

   When you protect an std::deque with a mutex you would need at least two atomic operations: to lock the queue before pushing, and to unlock the queue after pushing. Because you're using an std::deque it may need to allocate memory durin
5. 5.▲
   by snaury 3y ago

   The lockfree scheduler certainly looks interesting (especially linearizability of event broadcasts), but I was surprised to see benchmark results in the paper with a peak of 43500 messages/s for 12 pairs of actors (and 12 cores?), with