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Unlike other ZAP consumers due to compression DDT does not know how big entry it is reading from ZAP. Due to this it called zap_length_uint64_by_dnode() and zap_lookup_uint64_by_dnode(), each of which does full ZAP entry lookup. Introduction of the combined ZAP method dramatically reduces the CPU overhead and locks contention at DBUF layer. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #18048 |
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| os | ||
| sys | ||
| .gitignore | ||
| cityhash.h | ||
| libnvpair.h | ||
| libzdb.h | ||
| libzfs.h | ||
| libzfs_core.h | ||
| libzfsbootenv.h | ||
| libzpool.h | ||
| libzutil.h | ||
| Makefile.am | ||
| zfeature_common.h | ||
| zfs_comutil.h | ||
| zfs_crrd.h | ||
| zfs_deleg.h | ||
| zfs_fletcher.h | ||
| zfs_namecheck.h | ||
| zfs_prop.h | ||
| zfs_valstr.h | ||