Searched hist:315339 (Results 1 - 6 of 6) sorted by last modified time
| /freebsd-11-stable/sys/kern/ | ||
| H A D | subr_lock.c | diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. |
| H A D | kern_rwlock.c | diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. |
| H A D | kern_sx.c | diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. |
| H A D | kern_mutex.c | diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. |
| H A D | kern_lockstat.c | diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. |
| /freebsd-11-stable/sys/sys/ | ||
| H A D | lock.h | diff 315339 Thu Mar 16 00:56:58 MDT 2017 mjg MFC r312890,r313386,r313390: Sprinkle __read_mostly on backoff and lock profiling code. == locks: change backoff to exponential Previous implementation would use a random factor to spread readers and reduce chances of starvation. This visibly reduces effectiveness of the mechanism. Switch to the more traditional exponential variant. Try to limit starvation by imposing an upper limit of spins after which spinning is half of what other threads get. Note the mechanism is turned off by default. == locks: follow up r313386 Unfinished diff was committed by accident. The loop in lock_delay was changed to decrement, but the loop iterator was still incrementing. |
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