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| author | Koichi Sasada <ko1@atdot.net> | 2023-04-10 10:53:13 +0900 |
|---|---|---|
| committer | Koichi Sasada <ko1@atdot.net> | 2023-10-12 14:47:01 +0900 |
| commit | be1bbd5b7d40ad863ab35097765d3754726bbd54 (patch) | |
| tree | 2995a0859bea1d6b2903dcd324f41869dbef14a1 /configure.ac | |
| parent | 096ee0648e215915a3019c2cd68ba220d94eca12 (diff) | |
| download | ruby-be1bbd5b7d40ad863ab35097765d3754726bbd54.tar.gz | |
M:N thread scheduler for Ractors
This patch introduce M:N thread scheduler for Ractor system.
In general, M:N thread scheduler employs N native threads (OS threads)
to manage M user-level threads (Ruby threads in this case).
On the Ruby interpreter, 1 native thread is provided for 1 Ractor
and all Ruby threads are managed by the native thread.
From Ruby 1.9, the interpreter uses 1:1 thread scheduler which means
1 Ruby thread has 1 native thread. M:N scheduler change this strategy.
Because of compatibility issue (and stableness issue of the implementation)
main Ractor doesn't use M:N scheduler on default. On the other words,
threads on the main Ractor will be managed with 1:1 thread scheduler.
There are additional settings by environment variables:
`RUBY_MN_THREADS=1` enables M:N thread scheduler on the main ractor.
Note that non-main ractors use the M:N scheduler without this
configuration. With this configuration, single ractor applications
run threads on M:1 thread scheduler (green threads, user-level threads).
`RUBY_MAX_CPU=n` specifies maximum number of native threads for
M:N scheduler (default: 8).
This patch will be reverted soon if non-easy issues are found.
[Bug #19842]
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index fc468389da..03165b79ca 100644 --- a/configure.ac +++ b/configure.ac @@ -1342,6 +1342,8 @@ AC_CHECK_HEADERS(syscall.h) AC_CHECK_HEADERS(time.h) AC_CHECK_HEADERS(ucontext.h) AC_CHECK_HEADERS(utime.h) +AC_CHECK_HEADERS(sys/epoll.h) + AS_CASE("$target_cpu", [x64|x86_64|i[3-6]86*], [ AC_CHECK_HEADERS(x86intrin.h) ]) |