#5174: Running out of OS threads in a server
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Reporter: bos | Owner:
Type: bug | Status: new
Priority: normal | Component: Runtime System
Version: 6.12.3 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: x86 | Failure: Runtime crash
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I have a web server that uses my mysql-simple package, and it dies after
serving several hundred requests.
The mysql-simple package is a wrapper around the MySQL C API, which is
unfortunately not signal-safe. GHC RTS signals kill it, so I've been using
runInBoundThread to manage the signals from the Haskell world.
Unfortunately, the number of OS threads in flight increases with every use
of runInBoundThread, so after a few hundred requests, I run out of OS
threads (the default limit being 1024 threads on Linux), and my process is
killed.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5174>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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