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ea400129c3
- Avoid atomic_add() when updating as_lower_bound/as_upper_bound. Previous code was excessively strong on 64bit systems while not strong enough on 32bit ones. Instead introduce and use real atomic_load() and atomic_store() operations, just an assignments on 64bit machines, but using proper atomics on 32bit ones to avoid torn reads/writes. - Reduce number of buckets on large systems. Extra buckets not as much improve add speed, as hurt reads. Unlike wmsum for aggsum reads are still important. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored-By: iXsystems, Inc. Closes #12145 |
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| .. | ||
| ia32 | ||
| os | ||
| rpc | ||
| sys | ||
| util | ||
| assert.h | ||
| atomic.h | ||
| libdevinfo.h | ||
| libgen.h | ||
| libshare.h | ||
| limits.h | ||
| locale.h | ||
| Makefile.am | ||
| statcommon.h | ||
| stdio.h | ||
| stdlib.h | ||
| string.h | ||
| stropts.h | ||
| thread.h | ||
| tzfile.h | ||
| ucred.h | ||
| umem.h | ||
| unistd.h | ||
| zone.h | ||