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| author | Rickard Green <[email protected]> | 2010-09-15 22:14:51 +0200 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2011-11-13 20:39:30 +0100 |
| commit | a67e91e658bdbba24fcc3c79b06fdf10ff830bc9 (patch) | |
| tree | 07f9e6b1fd715d516d2571521307fe1b9d7c3948 /erts/emulator/sys/unix/erl_unix_sys.h | |
| parent | 55358c54778ead444e51f565d00175ba887ef182 (diff) | |
| download | otp-a67e91e658bdbba24fcc3c79b06fdf10ff830bc9.tar.gz otp-a67e91e658bdbba24fcc3c79b06fdf10ff830bc9.tar.bz2 otp-a67e91e658bdbba24fcc3c79b06fdf10ff830bc9.zip | |
Optimize memory allocation
A number of memory allocation optimizations have been implemented. Most
optimizations reduce contention caused by synchronization between
threads during allocation and deallocation of memory. Most notably:
* Synchronization of memory management in scheduler specific allocator
instances has been rewritten to use lock-free synchronization.
* Synchronization of memory management in scheduler specific
pre-allocators has been rewritten to use lock-free synchronization.
* The 'mseg_alloc' memory segment allocator now use scheduler specific
instances instead of one instance. Apart from reducing contention
this also ensures that memory allocators always create memory
segments on the local NUMA node on a NUMA system.
Diffstat (limited to 'erts/emulator/sys/unix/erl_unix_sys.h')
| -rw-r--r-- | erts/emulator/sys/unix/erl_unix_sys.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h index d8d51b192c..9a5ed9f5bc 100644 --- a/erts/emulator/sys/unix/erl_unix_sys.h +++ b/erts/emulator/sys/unix/erl_unix_sys.h @@ -129,10 +129,12 @@ #define HAVE_ERTS_CHECK_IO_DEBUG int erts_check_io_debug(void); - -#ifndef ENABLE_CHILD_WAITER_THREAD +#ifndef ERTS_SMP # undef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT # define ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT +#endif + +#ifndef ENABLE_CHILD_WAITER_THREAD # ifdef ERTS_SMP # define ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN void erts_check_children(void); |