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Minimize scheduler locking on task creation

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This takes my CPU utilization on task-perf-spawnalot from 35% to 55%
This commit is contained in:
Brian Anderson 2011-07-29 23:02:51 -07:00
parent ec46f07e6e
commit d552a0b959
2 changed files with 2 additions and 1 deletions
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1
src/rt/rust_kernel.cpp
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@ -136,7 +136,6 @@ int rust_kernel::start_task_threads()
rust_task *
rust_kernel::create_task(rust_task *spawner, const char *name) {
rust_scheduler *thread = threads[rand(&rctx) % num_threads];
scoped_lock with(thread->lock);
return thread->create_task(spawner, name);
}

2
src/rt/rust_scheduler.cpp
View file

@ -272,7 +272,9 @@ rust_scheduler::create_task(rust_task *spawner, const char *name) {
task->pin(spawner->pinned_on);
task->on_wakeup(spawner->_on_wakeup);
}
lock.lock();
newborn_tasks.append(task);
lock.unlock();
sync::increment(kernel->live_tasks);