After an otherwise "clean" exit of test058, the smc/db directory showed
the following, despite the fact that there was no more 9196 pid on the
system. Is there any facility in db4 to trace locking?
I don't think slapd's own debugging would give the level of detail that
would be necessary to find a smoking gun, but if I'm just reading stuff
wrong, I have the testrun directory from this.
---------- begin output ----------
Default locking region information:
138 Last allocated locker ID
0x7fffffff Current maximum unused locker ID
9 Number of lock modes
1000 Maximum number of locks possible
1000 Maximum number of lockers possible
1000 Maximum number of lock objects possible
20 Number of lock object partitions
4 Number of current locks
12 Maximum number of locks at any one time
3 Maximum number of locks in any one bucket
0 Maximum number of locks stolen by for an empty partition
0 Maximum number of locks stolen for any one partition
9 Number of current lockers
15 Maximum number of lockers at any one time
4 Number of current lock objects
8 Maximum number of lock objects at any one time
2 Maximum number of lock objects in any one bucket
0 Maximum number of objects stolen by for an empty partition
0 Maximum number of objects stolen for any one partition
1009 Total number of locks requested
1005 Total number of locks released
0 Total number of locks upgraded
46 Total number of locks downgraded
4 Lock requests not available due to conflicts, for which we waited
0 Lock requests not available due to conflicts, for which we did not wait
0 Number of deadlocks
0 Lock timeout value
0 Number of locks that have timed out
0 Transaction timeout value
0 Number of transactions that have timed out
488KB The size of the lock region
4 The number of partition locks that required waiting (0%)
4 The maximum number of times any partition lock was waited for (0%)
0 The number of object queue operations that required waiting (0%)
1 The number of locker allocations that required waiting (0%)
0 The number of region locks that required waiting (0%)
2 Maximum hash bucket length
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Lock REGINFO information:
Lock Region type
5 Region ID
__db.005 Region name
0xfecf0000 Original region address
0xfecf0000 Region address
0xfecf00c8 Region primary address
0 Region maximum allocation
0 Region allocated
Region allocations: 3006 allocations, 0 failures, 0 frees, 1 longest
Allocations by power-of-two sizes:
1KB 3003
2KB 0
4KB 0
8KB 0
16KB 2
32KB 0
64KB 1
128KB 0
256KB 0
512KB 0
1024KB 0
REGION_JOIN_OK Region flags
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Lock region parameters:
104 Lock region region mutex [0/119 0% 11775/1]
1031 locker table size
1031 object table size
616 obj_off
63456 locker_off
0 need_dd
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Lock conflict matrix:
0 0 0 0 0 0 0 0 0
0 0 1 0 1 0 1 0 1
0 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0
0 1 1 0 0 0 0 1 1
0 0 1 0 0 0 0 0 1
0 1 1 0 0 0 0 1 1
0 0 1 0 1 0 1 0 0
0 1 1 0 1 1 1 0 1
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Locks grouped by lockers:
Locker Mode Count Status ----------------- Object ---------------
85 dd= 0 locks held 1 write locks 0 pid/thread 9196/1
85 READ 1 HELD id2entry.bdb handle 0
86 dd= 0 locks held 0 write locks 0 pid/thread 9196/1
87 dd= 0 locks held 1 write locks 0 pid/thread 9196/1
87 READ 1 HELD dn2id.bdb handle 0
88 dd= 0 locks held 0 write locks 0 pid/thread 9196/1
89 dd= 0 locks held 0 write locks 0 pid/thread 9196/1
8a dd= 0 locks held 0 write locks 0 pid/thread 9196/1
8000013c dd= 0 locks held 0 write locks 0 pid/thread 9196/1
8000013d dd= 0 locks held 0 write locks 0 pid/thread 9196/1
80000145 dd= 0 locks held 2 write locks 2 pid/thread 9196/1
80000145 WRITE 1 HELD 0x39548 len: 5 data: 0000000x0100
80000145 WRITE 1 HELD id2entry.bdb page 1
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Locks grouped by object:
Locker Mode Count Status ----------------- Object ---------------
80000145 WRITE 1 HELD 0x39548 len: 5 data: 0000000x0100
80000145 WRITE 1 HELD id2entry.bdb page 1
85 READ 1 HELD id2entry.bdb handle 0
87 READ 1 HELD dn2id.bdb handle 0
