Stefan Metzmacher 4faab2a77a s3:dbwrap_watch: avoid recursion into dbwrap_do_locked() from dbwrap_watched_do_locked_{storev,delete}() ... This avoids a lot of overhead! Using smbtorture3 //foo/bar -U% local-g-lock-ping-pong -o 500000 under valgrind --tool=callgrind... This change replaces this: 6,877,542,529 PROGRAM TOTALS 590,000,773 lib/tdb/common/lock.c:tdb_lock_list 479,000,608 lib/tdb/common/lock.c:tdb_unlock 446,500,532 lib/tdb/common/io.c:tdb_read 364,000,824 lib/tdb/common/hash.c:tdb_jenkins_hash 285,000,532 lib/tdb/common/io.c:tdb_write 262,054,669 /x86_64/multiarch/memmove-vec-unaligned-erms.S:__memcpy_avx_unaligned_erms 206,500,496 lib/tdb/common/mutex.c:tdb_mutex_lock 193,000,176 lib/tdb/common/tdb.c:tdb_find 160,000,256 lib/talloc/talloc.c:_talloc_get_type_abort 148,500,297 lib/tdb/common/tdb.c:tdb_storev 140,000,196 lib/tdb/common/lock.c:tdb_lock 130,000,858 lib/util/debug.c:debuglevel_get_class 128,003,722 lib/talloc/talloc.c:_talloc_free 128,000,118 lib/tdb/common/tdb.c:tdb_parse_record 126,000,576 lib/tdb/common/lock.c:tdb_brlock.part.3 121,000,272 lib/tdb/common/mutex.c:tdb_mutex_unlock 118,000,225 /nptl/pthread_mutex_lock.c:__pthread_mutex_lock_full 112,750,222 lib/tdb/common/freelist.c:tdb_allocate_from_freelist 108,500,168 lib/tdb/common/io.c:tdb_ofs_read 102,500,000 lib/tdb/common/io.c:tdb_parse_data by this: 5,706,522,398 PROGRAM TOTALS 434,000,617 lib/tdb/common/lock.c:tdb_lock_list 389,500,494 lib/tdb/common/io.c:tdb_read 359,000,488 lib/tdb/common/lock.c:tdb_unlock 285,000,532 lib/tdb/common/io.c:tdb_write 237,554,655 /x86_64/multiarch/memmove-vec-unaligned-erms.S:__memcpy_avx_unaligned_erms 208,000,668 lib/tdb/common/hash.c:tdb_jenkins_hash 206,500,496 lib/tdb/common/mutex.c:tdb_mutex_lock 160,000,256 lib/talloc/talloc.c:_talloc_get_type_abort 148,500,297 lib/tdb/common/tdb.c:tdb_storev 136,000,132 lib/tdb/common/tdb.c:tdb_find 130,000,858 lib/util/debug.c:debuglevel_get_class 126,000,576 lib/tdb/common/lock.c:tdb_brlock.part.3 121,000,272 lib/tdb/common/mutex.c:tdb_mutex_unlock 118,000,225 /nptl/pthread_mutex_lock.c:__pthread_mutex_lock_full 112,750,222 lib/tdb/common/freelist.c:tdb_allocate_from_freelist 112,000,168 lib/tdb/common/lock.c:tdb_lock 94,500,154 lib/tdb/common/io.c:tdb_ofs_read 94,000,188 /nptl/pthread_mutex_unlock.c:__pthread_mutex_unlock_full 86,000,086 lib/dbwrap/dbwrap.c:dbwrap_lock_order_lock 83,000,083 lib/dbwrap/dbwrap_tdb.c:db_tdb_do_locked time smbtorture3 //foo/bar -U% local-g-lock-ping-pong -o 5000000 gives: 902834 locks/sec real 0m11,103s user 0m8,233s sys 0m2,868s vs. 1037262 locks/sec real 0m9,685s user 0m6,788s sys 0m2,896s Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Volker Lendecke <vl@samba.org> Autobuild-User(master): Volker Lendecke <vl@samba.org> Autobuild-Date(master): Wed Jul 8 11:02:39 UTC 2020 on sn-devel-184		2020-07-08 11:02:39 +00:00
..
dbwrap_ctdb.c	lib: Use ctdbd_req_send/recv in ctdb_parse_send/recv	2020-04-28 09:08:40 +00:00
dbwrap_ctdb.h	dbwrap_ctdb: Use messaging_ctdbd_connection	2017-07-25 17:43:18 +02:00
dbwrap_open.c	lib: Allow DBWRAP_LOCK_ORDER_NONE in db_open()	2020-05-15 00:48:32 +00:00
dbwrap_open.h	dbwrap: add a dbwrap_flags argument to db_open()	2014-02-07 16:06:06 +01:00
dbwrap_watch.c	s3:dbwrap_watch: avoid recursion into dbwrap_do_locked() from dbwrap_watched_do_locked_{storev,delete}()	2020-07-08 11:02:39 +00:00
dbwrap_watch.h	dbwrap: Add publically available dbwrap_watch_wakeup()	2019-07-04 14:03:28 +00:00