Take steps to avoid threadpool starvation #11275
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Fixes #
Context
There are a handful of areas where threadpool threads are unnecessarily blocked by synchronous work, or there is additional contention that can be avoided. The most egregious instance is the synchronous read in BuferedReadStream
The outer call to BeginRead() ends up calling BufferedReadStream.Read() which synchronously blocks when _innerStream.Read() is called. This results in a substantial amount of block time for threadpool threads.
Changes Made
Testing
Notes