amd64: bump sleepq hash size to 2048

This is the most contended lock type during the first hour of -j 104 poudriere.

Drops significantly with the change.

Note there are suspicous acquires which most likely don't need to
happen, artificially exacerbating tehe problem..

This commit is contained in:

Mateusz Guzik

2025-09-30 14:06:48 +00:00

parent aa1afb69dc

commit 2bdc89535a

1 changed files with 10 additions and 1 deletions

									
										sys/amd64/include/param.h
									
		+10
		-1
	
												View File
												
				@@ -150,6 +150,15 @@

				    (((va) >= kva_layout.dmap_low && (va) < kva_layout.dmap_high) || \

				    ((va) >= kva_layout.km_low && (va) < kva_layout.km_high))

				#define SC_TABLESIZE    1024                     /* Must be power of 2. */

				/*

				 * Must be power of 2.

				 *

				 * Perhaps should be autosized on boot based on found ncpus.

				 */

				#if MAXCPU > 256

				#define SC_TABLESIZE    2048

				#else

				#define SC_TABLESIZE    1024

				#endif

				#endif /* !_AMD64_INCLUDE_PARAM_H_ */