WITH vs INNER QUERY on 11g (100% CPU & Never Return vs 2-3 Seconds)
I cannot figure out why this is happening. We have an 11g database and a pipelined stored function. The following will never return. The db cpu goes up to about 100%.
FOR myRow IN (
WITH subquery AS (
SELECT ...
SELECT
FROM subqery
LOOP
PIPE ROW(...);
END LOOP;If it's formatted the following way, it behaves the same way...:
FOR myRow IN (
SELECT
FROM (
SELECT ...
LOOP
PIPE ROW(...);
END LOOP;However, using the SELECT * FROM (...) method, without the procedure, returns fine:
SELECT * FROM (
SELECT * FROM (
)But this never returns:
WITH subquery AS (
SELECT ...
SELECT
FROM subqueryI have no idea how to diagnose this. It's as if one method tries to store results one way, while the other does not. Any thoughts would be greatly appreciated!!
This is the explain for the /*+materialize*/ and subquery form:
Plan hash value: 2761872157
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 130 | | 3427 (2)| 00:00:42 |
| 1 | TEMP TABLE TRANSFORMATION | | | | | | |
| 2 | LOAD AS SELECT | | | | | | |
|* 3 | HASH JOIN | | 5 | 1090 | | 3425 (2)| 00:00:42 |
| 4 | TABLE ACCESS FULL | U_MASTER | 579 | 4632 | | 5 (0)| 00:00:01 |
|* 5 | HASH JOIN RIGHT OUTER | | 83280 | 16M| 4152K| 3418 (2)| 00:00:42 |
| 6 | VIEW | | 83280 | 3171K| | 857 (2)| 00:00:11 |
|* 7 | HASH JOIN | | 83280 | 4066K| | 857 (2)| 00:00:11 |
|* 8 | TABLE ACCESS FULL | U_MASTER | 246 | 1722 | | 5 (0)| 00:00:01 |
| 9 | VIEW | | 83280 | 3497K| | 851 (2)| 00:00:11 |
|* 10 | HASH JOIN | | 83280 | 3903K| 2704K| 851 (2)| 00:00:11 |
|* 11 | TABLE ACCESS FULL | T_MASTER | 78886 | 1771K| | 377 (2)| 00:00:05 |
|* 12 | TABLE ACCESS FULL | T_CONTAINER_IN | 84469 | 2062K| | 191 (3)| 00:00:03 |
|* 13 | HASH JOIN OUTER | | 83280 | 13M| 1048K| 1634 (2)| 00:00:20 |
| 14 | TABLE ACCESS FULL | C_MASTER | 16742 | 850K| | 127 (2)| 00:00:02 |
| 15 | VIEW | | 83280 | 9678K| | 937 (2)| 00:00:12 |
|* 16 | HASH JOIN | | 83280 | 9678K| | 937 (2)| 00:00:12 |
|* 17 | TABLE ACCESS FULL | U_MASTER | 246 | 2706 | | 5 (0)| 00:00:01 |
| 18 | VIEW | | 83280 | 8783K| | 931 (2)| 00:00:12 |
|* 19 | HASH JOIN | | 83280 | 5530K| 2704K| 931 (2)| 00:00:12 |
|* 20 | TABLE ACCESS FULL| T_MASTER | 78886 | 1771K| | 377 (2)| 00:00:05 |
|* 21 | TABLE ACCESS FULL| T_CONTAINER_IN | 84469 | 3712K| | 191 (3)| 00:00:03 |
| 22 | VIEW | | 1 | 130 | | 2 (0)| 00:00:01 |
| 23 | TABLE ACCESS FULL | SYS_TEMP_0FD9D670A_23115C | 1 | 103 | | 2 (0)| 00:00:01 |
Predicate Information (identified by operation id):
3 - access("A"."PICKUP_LOC_UNIT"="B"."U_ID")
filter(("A"."STATUS"=1 OR "A"."STATUS"=2) AND "B"."FAC_ID"=161 AND
"from$_subquery$_008"."TO_UNIT_ID" IS NULL AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("A"."ORIGIN_DATETIME"))
<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) OR "B"."FAC_ID"=161 AND "from$_subquery$_008"."PREV_T_ID" IS NULL
AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_008"."TASK_DATE_TIME"))>SYS_EXTRACT_UTC(SYSTIMEST
AMP(6)) AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("A"."ORIGIN_DATETIME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6))
AND "from$_subquery$_008"."TO_UNIT_ID" IS NOT NULL OR "from$_subquery$_008"."FAC_ID"=161 AND
"from$_subquery$_014"."TASK_DATE_TIME" IS NULL AND ("from$_subquery$_008"."UNIT_TYPE_ID"=2 OR
"from$_subquery$_008"."UNIT_TYPE_ID"=3) AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_008"."TAS
K_DATE_TIME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) OR "from$_subquery$_008"."FAC_ID"=161 AND
("from$_subquery$_008"."UNIT_TYPE_ID"=2 OR "from$_subquery$_008"."UNIT_TYPE_ID"=3) AND
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_008"."TASK_DATE_TIME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP
(6)) AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_014"."TASK_DATE_TIME"))>SYS_EXTRACT_UTC(SYST
IMESTAMP(6)))
5 - access("from$_subquery$_008"."QCSJ_C000000000600000"="G"."PREV_T_ID"(+) AND
"from$_subquery$_008"."C_ID_IN"="G"."C_ID_IN"(+))
7 - access("H"."TO_UNIT_ID"="I"."U_ID")
8 - filter("I"."UNIT_TYPE_ID"=1 OR "I"."UNIT_TYPE_ID"=2 OR "I"."UNIT_TYPE_ID"=3)
10 - access("G"."T_ID"="H"."T_ID")
11 - filter("H"."STATUS"=1)
12 - filter("G"."REJECT"=0)
13 - access("A"."C_ID"="C"."C_ID_IN"(+))
16 - access("D"."TO_UNIT_ID"="E"."U_ID")
17 - filter("E"."UNIT_TYPE_ID"=1 OR "E"."UNIT_TYPE_ID"=2 OR "E"."UNIT_TYPE_ID"=3)
19 - access("C"."T_ID"="D"."T_ID")
20 - filter("D"."STATUS"=1)
21 - filter("C"."REJECT"=0) This is the explain for the with statement form (the one that never returns):
Plan hash value: 868902620
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 5 | 840 | | 1493 (2)| 00:00:18 |
|* 1 | FILTER | | | | | | |
| 2 | NESTED LOOPS OUTER | | 5 | 840 | | 1493 (2)| 00:00:18 |
|* 3 | HASH JOIN | | 83280 | 11M| | 1484 (2)| 00:00:18 |
| 4 | TABLE ACCESS FULL | U_MASTER | 579 | 4632 | | 5 (0)| 00:00:01 |
|* 5 | HASH JOIN OUTER | | 83280 | 10M| 1048K| 1477 (2)| 00:00:18 |
| 6 | TABLE ACCESS FULL | C_MASTER | 16742 | 850K| | 127 (2)| 00:00:02 |
| 7 | VIEW | | 83280 | 6424K| | 937 (2)| 00:00:12 |
|* 8 | HASH JOIN | | 83280 | 6424K| | 937 (2)| 00:00:12 |
|* 9 | TABLE ACCESS FULL | U_MASTER | 246 | 2706 | | 5 (0)| 00:00:01 |
|* 10 | HASH JOIN | | 83280 | 5530K| 2704K| 931 (2)| 00:00:12 |
|* 11 | TABLE ACCESS FULL | T_MASTER | 78886 | 1771K| | 377 (2)| 00:00:05 |
|* 12 | TABLE ACCESS FULL | T_CONTAINER_IN | 84469 | 3712K| | 191 (3)| 00:00:03 |
|* 13 | VIEW PUSHED PREDICATE | | 1 | 29 | | 0 (0)| 00:00:01 |
|* 14 | HASH JOIN | | 845 | 46475 | | 384 (2)| 00:00:05 |
|* 15 | TABLE ACCESS FULL | U_MASTER | 246 | 1722 | | 5 (0)| 00:00:01 |
| 16 | NESTED LOOPS | | | | | | |
| 17 | NESTED LOOPS | | 845 | 40560 | | 378 (2)| 00:00:05 |
|* 18 | TABLE ACCESS FULL | T_MASTER | 78886 | 1771K| | 377 (2)| 00:00:05 |
|* 19 | INDEX RANGE SCAN | IDX_T_CONTAINER_IN_PREV_T_ID | 1 | | | 0 (0)| 00:00:01 |
|* 20 | TABLE ACCESS BY INDEX ROWID| T_CONTAINER_IN | 1 | 25 | | 0 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter(("A"."STATUS"=1 OR "A"."STATUS"=2) AND "B"."FAC_ID"=161 AND "from$_subquery$_008"."TO_UNIT_ID" IS
NULL AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("A"."ORIGIN_DATETIME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) OR
"B"."FAC_ID"=161 AND "from$_subquery$_008"."PREV_T_ID" IS NULL AND
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_008"."TASK_DATE_TIME"))>SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) AND
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("A"."ORIGIN_DATETIME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) AND
"from$_subquery$_008"."TO_UNIT_ID" IS NOT NULL OR "from$_subquery$_008"."FAC_ID"=161 AND
"from$_subquery$_014"."TASK_DATE_TIME" IS NULL AND ("from$_subquery$_008"."UNIT_TYPE_ID"=2 OR
"from$_subquery$_008"."UNIT_TYPE_ID"=3) AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_008"."TASK_DATE_TI
ME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) OR "from$_subquery$_008"."FAC_ID"=161 AND
("from$_subquery$_008"."UNIT_TYPE_ID"=2 OR "from$_subquery$_008"."UNIT_TYPE_ID"=3) AND
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_008"."TASK_DATE_TIME"))<=SYS_EXTRACT_UTC(SYSTIMESTAMP(6)) AND
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("from$_subquery$_014"."TASK_DATE_TIME"))>SYS_EXTRACT_UTC(SYSTIMESTAMP(6)))
3 - access("A"."PICKUP_LOC_UNIT"="B"."U_ID")
5 - access("A"."C_ID"="C"."C_ID_IN"(+))
8 - access("D"."TO_UNIT_ID"="E"."U_ID")
9 - filter("E"."UNIT_TYPE_ID"=1 OR "E"."UNIT_TYPE_ID"=2 OR "E"."UNIT_TYPE_ID"=3)
10 - access("C"."T_ID"="D"."T_ID")
11 - filter("D"."STATUS"=1)
12 - filter("C"."REJECT"=0)
13 - filter("from$_subquery$_008"."C_ID_IN"="G"."C_ID_IN"(+))
14 - access("H"."TO_UNIT_ID"="I"."U_ID")
15 - filter("I"."UNIT_TYPE_ID"=1 OR "I"."UNIT_TYPE_ID"=2 OR "I"."UNIT_TYPE_ID"=3)
18 - filter("H"."STATUS"=1)
19 - access("G"."PREV_T_ID"="from$_subquery$_008"."QCSJ_C000000000600000")
20 - filter("G"."REJECT"=0 AND "G"."T_ID"="H"."T_ID")Just wanted to say thanks again for any additional help you can provide!
Edited by: asmallgrin on Feb 3, 2010 7:28 AM
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Kernel command line: ro root=LABEL=/ elevator=deadline rhgb quiet
[root@localhost ~]# cat /proc/meminfo
MemTotal: 1034576 kB
MemFree: 27356 kB
Buffers: 8388 kB
Cached: 609660 kB
SwapCached: 18628 kB
Active: 675376 kB
Inactive: 287072 kB
HighTotal: 130304 kB
HighFree: 260 kB
LowTotal: 904272 kB
LowFree: 27096 kB
SwapTotal: 3148700 kB
SwapFree: 2940636 kB
Dirty: 72 kB
Writeback: 0 kB
AnonPages: 328700 kB
Mapped: 271316 kB
Slab: 21136 kB
PageTables: 14196 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3665988 kB
Committed_AS: 1187464 kB
VmallocTotal: 114680 kB
VmallocUsed: 5860 kB
VmallocChunk: 108476 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 4096 kB
[root@localhost ~]# cat /proc/slabinfo
slabinfo - version: 2.1
# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail>
rpc_buffers 8 8 2048 2 1 : tunables 24 12 8 : slabdata 4 4 0
rpc_tasks 8 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
rpc_inode_cache 6 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
ip_conntrack_expect 0 0 96 40 1 : tunables 120 60 8 : slabdata 0 0 0
ip_conntrack 68 68 228 17 1 : tunables 120 60 8 : slabdata 4 4 0
ip_fib_alias 7 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
ip_fib_hash 7 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
fib6_nodes 22 113 32 113 1 : tunables 120 60 8 : slabdata 1 1 0
ip6_dst_cache 13 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
ndisc_cache 1 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
RAWv6 4 5 768 5 1 : tunables 54 27 8 : slabdata 1 1 0
UDPv6 9 12 640 6 1 : tunables 54 27 8 : slabdata 2 2 0
tw_sock_TCPv6 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
request_sock_TCPv6 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
TCPv6 1 3 1280 3 1 : tunables 24 12 8 : slabdata 1 1 0
jbd_1k 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0
dm_mpath 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
dm_uevent 0 0 2460 3 2 : tunables 24 12 8 : slabdata 0 0 0
dm_tio 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
dm_io 0 0 20 169 1 : tunables 120 60 8 : slabdata 0 0 0
jbd_4k 1 1 4096 1 1 : tunables 24 12 8 : slabdata 1 1 0
scsi_cmd_cache 10 10 384 10 1 : tunables 54 27 8 : slabdata 1 1 0
sgpool-128 36 36 2048 2 1 : tunables 24 12 8 : slabdata 18 18 0
sgpool-64 33 36 1024 4 1 : tunables 54 27 8 : slabdata 9 9 0
sgpool-32 34 40 512 8 1 : tunables 54 27 8 : slabdata 5 5 0
sgpool-16 35 45 256 15 1 : tunables 120 60 8 : slabdata 3 3 0
sgpool-8 60 60 128 30 1 : tunables 120 60 8 : slabdata 2 2 0
scsi_io_context 0 0 104 37 1 : tunables 120 60 8 : slabdata 0 0 0
ext3_inode_cache 4376 8216 492 8 1 : tunables 54 27 8 : slabdata 1027 1027 0
ext3_xattr 165 234 48 78 1 : tunables 120 60 8 : slabdata 3 3 0
journal_handle 8 169 20 169 1 : tunables 120 60 8 : slabdata 1 1 0
journal_head 684 1008 52 72 1 : tunables 120 60 8 : slabdata 14 14 0
revoke_table 18 254 12 254 1 : tunables 120 60 8 : slabdata 1 1 0
revoke_record 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
uhci_urb_priv 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
UNIX 56 112 512 7 1 : tunables 54 27 8 : slabdata 16 16 0
flow_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
cfq_ioc_pool 0 0 92 42 1 : tunables 120 60 8 : slabdata 0 0 0
cfq_pool 0 0 96 40 1 : tunables 120 60 8 : slabdata 0 0 0
crq_pool 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
deadline_drq 140 252 44 84 1 : tunables 120 60 8 : slabdata 3 3 0
as_arq 0 0 56 67 1 : tunables 120 60 8 : slabdata 0 0 0
mqueue_inode_cache 1 6 640 6 1 : tunables 54 27 8 : slabdata 1 1 0
isofs_inode_cache 0 0 368 10 1 : tunables 54 27 8 : slabdata 0 0 0
hugetlbfs_inode_cache 1 11 340 11 1 : tunables 54 27 8 : slabdata 1 1 0
ext2_inode_cache 0 0 476 8 1 : tunables 54 27 8 : slabdata 0 0 0
ext2_xattr 0 0 48 78 1 : tunables 120 60 8 : slabdata 0 0 0
dnotify_cache 2 169 20 169 1 : tunables 120 60 8 : slabdata 1 1 0
dquot 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
eventpoll_pwq 1 101 36 101 1 : tunables 120 60 8 : slabdata 1 1 0
eventpoll_epi 1 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
inotify_event_cache 1 127 28 127 1 : tunables 120 60 8 : slabdata 1 1 0
inotify_watch_cache 23 92 40 92 1 : tunables 120 60 8 : slabdata 1 1 0
kioctx 135 135 256 15 1 : tunables 120 60 8 : slabdata 9 9 0
kiocb 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
fasync_cache 0 0 16 203 1 : tunables 120 60 8 : slabdata 0 0 0
shmem_inode_cache 553 585 436 9 1 : tunables 54 27 8 : slabdata 65 65 0
posix_timers_cache 0 0 88 44 1 : tunables 120 60 8 : slabdata 0 0 0
uid_cache 5 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
ip_mrt_cache 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
tcp_bind_bucket 32 203 16 203 1 : tunables 120 60 8 : slabdata 1 1 0
inet_peer_cache 1 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
secpath_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
xfrm_dst_cache 0 0 384 10 1 : tunables 54 27 8 : slabdata 0 0 0
ip_dst_cache 6 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
arp_cache 2 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
RAW 2 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
UDP 3 7 512 7 1 : tunables 54 27 8 : slabdata 1 1 0
tw_sock_TCP 3 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
request_sock_TCP 4 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
TCP 43 49 1152 7 2 : tunables 24 12 8 : slabdata 7 7 0
blkdev_ioc 3 127 28 127 1 : tunables 120 60 8 : slabdata 1 1 0
blkdev_queue 23 24 956 4 1 : tunables 54 27 8 : slabdata 6 6 0
blkdev_requests 137 161 172 23 1 : tunables 120 60 8 : slabdata 7 7 0
biovec-256 7 8 3072 2 2 : tunables 24 12 8 : slabdata 4 4 0
biovec-128 7 10 1536 5 2 : tunables 24 12 8 : slabdata 2 2 0
biovec-64 7 10 768 5 1 : tunables 54 27 8 : slabdata 2 2 0
biovec-16 7 15 256 15 1 : tunables 120 60 8 : slabdata 1 1 0
biovec-4 8 59 64 59 1 : tunables 120 60 8 : slabdata 1 1 0
biovec-1 406 406 16 203 1 : tunables 120 60 8 : slabdata 2 2 300
bio 564 660 128 30 1 : tunables 120 60 8 : slabdata 21 22 204
utrace_engine_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
utrace_cache 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
sock_inode_cache 149 230 384 10 1 : tunables 54 27 8 : slabdata 23 23 0
skbuff_fclone_cache 20 20 384 10 1 : tunables 54 27 8 : slabdata 2 2 0
skbuff_head_cache 86 210 256 15 1 : tunables 120 60 8 : slabdata 14 14 0
file_lock_cache 22 40 96 40 1 : tunables 120 60 8 : slabdata 1 1 0
Acpi-Operand 1147 1196 40 92 1 : tunables 120 60 8 : slabdata 13 13 0
Acpi-ParseExt 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-Parse 0 0 28 127 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-State 0 0 44 84 1 : tunables 120 60 8 : slabdata 0 0 0
Acpi-Namespace 615 676 20 169 1 : tunables 120 60 8 : slabdata 4 4 0
delayacct_cache 233 312 48 78 1 : tunables 120 60 8 : slabdata 4 4 0
taskstats_cache 12 53 72 53 1 : tunables 120 60 8 : slabdata 1 1 0
proc_inode_cache 622 693 356 11 1 : tunables 54 27 8 : slabdata 63 63 0
sigqueue 8 27 144 27 1 : tunables 120 60 8 : slabdata 1 1 0
radix_tree_node 6220 8134 276 14 1 : tunables 54 27 8 : slabdata 581 581 0
bdev_cache 37 42 512 7 1 : tunables 54 27 8 : slabdata 6 6 0
sysfs_dir_cache 4980 4992 48 78 1 : tunables 120 60 8 : slabdata 64 64 0
mnt_cache 36 60 128 30 1 : tunables 120 60 8 : slabdata 2 2 0
inode_cache 1113 1254 340 11 1 : tunables 54 27 8 : slabdata 114 114 81
dentry_cache 11442 18560 136 29 1 : tunables 120 60 8 : slabdata 640 640 180
filp 7607 10000 192 20 1 : tunables 120 60 8 : slabdata 500 500 120
names_cache 19 19 4096 1 1 : tunables 24 12 8 : slabdata 19 19 0
avc_node 14 72 52 72 1 : tunables 120 60 8 : slabdata 1 1 0
selinux_inode_security 814 1170 48 78 1 : tunables 120 60 8 : slabdata 15 15 0
key_jar 14 30 128 30 1 : tunables 120 60 8 : slabdata 1 1 0
idr_layer_cache 170 203 136 29 1 : tunables 120 60 8 : slabdata 7 7 0
buffer_head 38892 39024 52 72 1 : tunables 120 60 8 : slabdata 542 542 0
mm_struct 108 135 448 9 1 : tunables 54 27 8 : slabdata 15 15 0
vm_area_struct 11169 14904 84 46 1 : tunables 120 60 8 : slabdata 324 324 144
fs_cache 82 177 64 59 1 : tunables 120 60 8 : slabdata 3 3 0
files_cache 108 140 384 10 1 : tunables 54 27 8 : slabdata 14 14 0
signal_cache 142 171 448 9 1 : tunables 54 27 8 : slabdata 19 19 0
sighand_cache 127 135 1344 3 1 : tunables 24 12 8 : slabdata 45 45 0
task_struct 184 246 1360 3 1 : tunables 24 12 8 : slabdata 82 82 0
anon_vma 3313 5842 12 254 1 : tunables 120 60 8 : slabdata 23 23 0
pgd 84 84 4096 1 1 : tunables 24 12 8 : slabdata 84 84 0
pid 237 303 36 101 1 : tunables 120 60 8 : slabdata 3 3 0
size-131072(DMA) 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0
size-131072 0 0 131072 1 32 : tunables 8 4 0 : slabdata 0 0 0
size-65536(DMA) 0 0 65536 1 16 : tunables 8 4 0 : slabdata 0 0 0
size-65536 2 2 65536 1 16 : tunables 8 4 0 : slabdata 2 2 0
size-32768(DMA) 0 0 32768 1 8 : tunables 8 4 0 : slabdata 0 0 0
size-32768 9 9 32768 1 8 : tunables 8 4 0 : slabdata 9 9 0
size-16384(DMA) 0 0 16384 1 4 : tunables 8 4 0 : slabdata 0 0 0
size-16384 6 6 16384 1 4 : tunables 8 4 0 : slabdata 6 6 0
size-8192(DMA) 0 0 8192 1 2 : tunables 8 4 0 : slabdata 0 0 0
size-8192 5 5 8192 1 2 : tunables 8 4 0 : slabdata 5 5 0
size-4096(DMA) 0 0 4096 1 1 : tunables 24 12 8 : slabdata 0 0 0
size-4096 205 205 4096 1 1 : tunables 24 12 8 : slabdata 205 205 0
size-2048(DMA) 0 0 2048 2 1 : tunables 24 12 8 : slabdata 0 0 0
size-2048 260 270 2048 2 1 : tunables 24 12 8 : slabdata 135 135 0
size-1024(DMA) 0 0 1024 4 1 : tunables 54 27 8 : slabdata 0 0 0
size-1024 204 204 1024 4 1 : tunables 54 27 8 : slabdata 51 51 0
size-512(DMA) 0 0 512 8 1 : tunables 54 27 8 : slabdata 0 0 0
size-512 367 464 512 8 1 : tunables 54 27 8 : slabdata 58 58 0
size-256(DMA) 0 0 256 15 1 : tunables 120 60 8 : slabdata 0 0 0
size-256 487 495 256 15 1 : tunables 120 60 8 : slabdata 33 33 0
size-128(DMA) 0 0 128 30 1 : tunables 120 60 8 : slabdata 0 0 0
size-128 2242 2490 128 30 1 : tunables 120 60 8 : slabdata 83 83 0
size-64(DMA) 0 0 64 59 1 : tunables 120 60 8 : slabdata 0 0 0
size-32(DMA) 0 0 32 113 1 : tunables 120 60 8 : slabdata 0 0 0
size-64 1409 2950 64 59 1 : tunables 120 60 8 : slabdata 50 50 0
size-32 3596 3842 32 113 1 : tunables 120 60 8 : slabdata 34 34 0
kmem_cache 145 150 256 15 1 : tunables 120 60 8 : slabdata 10 10 0
[root@localhost ~]# slabtop -d 5
Active / Total Objects (% used) : 97257 / 113249 (85.9%)
Active / Total Slabs (% used) : 4488 / 4488 (100.0%)
Active / Total Caches (% used) : 101 / 146 (69.2%)
Active / Total Size (% used) : 15076.34K / 17587.55K (85.7%)
Minimum / Average / Maximum Object : 0.01K / 0.16K / 128.00K
OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
25776 25764 99% 0.05K 358 72 1432K buffer_head
16146 15351 95% 0.08K 351 46 1404K vm_area_struct
15138 7779 51% 0.13K 522 29 2088K dentry_cache
9720 9106 93% 0.19K 486 20 1944K filp
7714 7032 91% 0.27K 551 14 2204K radix_tree_node
5070 5018 98% 0.05K 65 78 260K sysfs_dir_cache
4826 4766 98% 0.01K 19 254 76K anon_vma
4824 3406 70% 0.48K 603 8 2412K ext3_inode_cache
3842 3691 96% 0.03K 34 113 136K size-32
2190 2174 99% 0.12K 73 30 292K size-128
1711 1364 79% 0.06K 29 59 116K size-64
1210 1053 87% 0.33K 110 11 440K inode_cache
1196 1147 95% 0.04K 13 92 52K Acpi-Operand
1170 814 69% 0.05K 15 78 60K selinux_inode_security
936 414 44% 0.05K 13 72 52K journal_head
747 738 98% 0.43K 83 9 332K shmem_inode_cache
693 617 89% 0.35K 63 11 252K proc_inode_cache
676 615 90% 0.02K 4 169 16K Acpi-Namespace
609 136 22% 0.02K 3 203 12K biovec-1
495 493 99% 0.25K 33 15 132K size-256
480 384 80% 0.12K 16 30 64K bio
440 399 90% 0.50K 55 8 220K size-512
312 206 66% 0.05K 4 78 16K delayacct_cache
303 209 68% 0.04K 3 101 12K pid
290 290 100% 0.38K 29 10 116K sock_inode_cache
[root@localhost ~]# cat /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
# Controls IP packet forwarding
net.ipv4.ip_forward=0
# Controls source route verification
net.ipv4.conf.default.rp_filter=1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route=0
# Oracle
net.ipv4.ip_local_port_range=1024 65000
net.core.rmem_default=4194304
net.core.rmem_max=4194304
net.core.wmem_default=262144
net.core.wmem_max=262144
net.ipv4.tcp_rmem=4096 65536 4194304
net.ipv4.tcp_wmem=4096 65536 4194304
# Keepalive Oracle
net.ipv4.tcp_keepalive_time=3000
net.ipv4.tcp_keepalive_intvl=30
net.ipv4.tcp_keepalive_probes=15
net.ipv4.tcp_retries2=3
net.ipv4.tcp_syn_retries=2
net.ipv4.tcp_sack=0
net.ipv4.tcp_timestamps=0
net.ipv4.tcp_window_scaling=0
# Oracle
fs.file-max = 6553600
fs.aio-max-nr=3145728
kernel.shmmni=4096
kernel.sem=250 32000 100 142
kernel.shmmax=2147483648
kernel.shmall=3279547
kernel.msgmnb=65536
kernel.msgmni=2878
kernel.msgmax=8192
kernel.exec-shield=0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq=1
kernel.panic=60
kernel.core_uses_pid=1
[root@localhost ~]# free | grep Swap
Swap: 3148700 319916 2828784
[root@localhost ~]# cat /etc/fstab | grep "/dev/shm"
tmpfs /dev/shm tmpfs size=1024M 0 0
[root@localhost ~]# df | grep "/dev/shm"
tmpfs 1048576 452128 596448 44% /dev/shm
NON-DEFAULT DB PARAMETERS:
db_block_size 8192
memory_target 633339904 /* automatic memory management */
open_cursors 300
processes 256
disk_async_io TRUE
filesystemio_options SETALL -
Queue consumer stops with 100% cpu usage
I'm trying to use Berkeley DB queue with transactions. When I tested what happens when transactions with DB_APPEND are aborted I found that while it works and DB_CONSUME correctly skips over rolled back records, unfortunately extents that have those records are never deleted, which causes database to always grow. Next I tried DB_CONSUME with database opened using DB_INORDER flag and it seems there's a serious regression in Berkeley DB that causes it to loop indefinitely with 100% cpu usage when it encounters a rolled back record. I tested various versions and found that this bug doesn't happen with 5.1.29, but it is reproducible with 5.2.42, so this regression might have been introduced in 5.2. I have also tested 5.3 and 6.0, and both have this behavior. There may be something wrong with the way queue records are rolled back, one indication of that would be that in 5.1.29 doesn't have neither of the two problems I found with DB_QUEUE: extents are deleted after being consumed, and there are no issues when consuming with DB_INORDER either.
You can find Python code to reproduce this issue here:
https://gist.github.com/snaury/027a3c546f5b0a62a440
Sorry for using Python and not e.g. C++, but it's a lot shorter that way.We have looked at the issues and they are valid. We will roll the fixes out for this in our next release of BDB. The test case was very useful and really helped to speed the process up. If you have any questions, please contact me directly at [email protected] Thanks again for bringing this to our attention.
thanks
mike -
How to create a DB Adapter with select query having inner query
Hi All,
I am trying to create a DB Adapter with select query. The query has some inner queries in it. It is just like this select a, b, c, (select d from e) d, (select e from e) e from tablename.
The problem here is with the xsd generated for this query. Xsd is not getting generated properly for all the fields it is just getting generated till c element and when it encounters
the inner query it is stopping the generation of xsd. So for the above query the xsd is something similar to the below
<xs:complexType name="rewOutput">
<xs:sequence>
<xs:element name="a" type="xs:string" nillable="true"/>
<xs:element name="b" type="xs:string" nillable="true"/>
<xs:element name="c" type="xs:string" nillable="true"/>
<xs:element name="select_d" type="xs:string" nillable="true"/>
</xs:sequence>
</xs:complexType>
as shown above the xsd is just getting generated till the first inner query. What should be done to get the full fledged xsd. Should it be manually built ?? Please help me on this.
Thanks In Advance.
Edited by: 959766 on Nov 30, 2012 1:20 AMHi,
I don't think the parser will be able to understand your query properly... I would try building the xsd manually...
Cheers,
Vlad -
Finder and loginwindow use 100% cpu with 10.6.8
I recently installed the patch to OS X 10.6.8 and now the finder is very unstable and uses 100% cpu and the loginwindow uses 100% cpu also. Yes I have Parallels 6 on this machine but I already "un-checked" the "show windows applications in doc" option which is the recommended solution. However, this did not fix the problem. I do not know how to determine what actual process is causing this finder / loginwindow issue. I very much appreciate if anyone has suggestion how to fix this problem.
This is on a mid-2011 MacBookPro.
thank you.TBauer, I had the same problem with 10.6.8 using 100% of the CPU with Parallels 6 installed. The following steps solved this problem for me:
0. Take a screen shot of your Dock if you wish to remember it as currently set
1. Launch Activity Monitor and click on the CPU column so you can see Dock using the CPU
2. Move ///Users/ ... /Library/Preferences/com.apple.dock.plist to the trash
3. Click on Dock and click on Quit Process to stop the Dock
OS X will then rebuild the default Dock
4. Put the items back in the Dock that you want
That solved the problem for me yesterday morning. I've launched Parallels 6 several times now and moved the machine from my work network to home and the 100% CPU problem hasn't returned.
Hope that works for you, too!
I don't think using the combo updater will solve the problem. The problem appears to be a .plist that is generated with OS X 10.6.7 and earlier that contains icons of a larger than Apple documented size causes the CPU looping. Rebuilding the dock.plist under OS X 10.6.8 appears to solve the problem.
Parallels has issued a knowledge bulletin saying they are looking into the problem. On their web site they have another approach involving moving the offending icon out of the dock to solve the problem. I like my solution better but theirs works, too. -
Problem:100 % cpu usage with tcp server dll
Hello,
I am trying to write a dll with labwindows/cvi that allows me to create a TCP Server. This dll is integrated in labview.I created this Dll with example provides by Labwindows/cvi(rtserver.dll).
Description of my problem: when i execute this dll in a "While Loop" in labview,the TCp server wait a connection and 100% cpu usage occurs. However when a client is connect to the server,the CPU is normaly used because the program stop when he meets the timeout of the tcpread() function. I would like to know how i could limit CPU usage when the server is awaiting a client in the labview "While loop".
I know I could use a DELAY() to limit Cpu usage ,but I would like to know if there are any others solutions.
thank you.i dont know your exact application, but i generally use Q to transfer data to TCP loop in my prgram it helps me in two ways.
1. it automatically restricts the iteration when ther is no data (Less CPU Usage, Less Unnecessary Trafic)
2. Q can eliminate problems arising due to non synchronization of loop
Tushar Jambhekar
[email protected]
Jambhekar Automation Solutions
LabVIEW Consultancy, LabVIEW Training
Rent a LabVIEW Developer, My Blog -
100% CPU usage with XP Cooler from PCAlert4
Any idea why I would be running 100% cpu usage when running XP Cooler from PCAlert4? I noticed PC was sluggish when running it so CTRL+ALT+DEL and under performance is 100% CPU with 245MB Ram Usage. No other TSR's running - several application but under 10% CPU usage without PCAlert and XP Cooler.
I was also wondering if anyone had any ideas on the video? I have the K7N2G with 768MB DDR PC 2100 (3x256) XP2200+ 266FSB running 1804MHz - Maxtor 30GB 7200RPM - 350W PSU (raidmax - yea yea I know, dont say a word though LOL) on board video and here is the problem - graphics are great, but they get choppy - running NFS HotPursuit 2 at 32bit 800x600 (doesnt seem to matter even when running 16bit 640x480still does it.) what setting am I missing? Thanks in advance.Deathstalker (Richard),
I did what you suggest in memory management and also changed out the mem on the board - it did make a difference, not as much as I had hoped, but it did.
Raven,
I have used Fraps in the past, forgot about it, but went ahead and downloaded it to get a better look.
To the Both of you,
Thanks so much for your replies, sometimes it just takes someone outside looking in to see the things overlooked. But I went ahead and also ran all of the latest updates for the board (semi new system and I only installed with the CD that came with the Mobo) and everything is running better than expected. Thanks again for your thoughts - keep 'em flowin, it's amazing whom we could help. Take care.
Don -
Strange behavior in inner query with group by clause
Hi All,
I found a very strange behaviour with Inner query having a group by clause.
Please look the sample code
Select b,c,qty from (select a,b,c,sum(d) qty from tab_xyz group by b,c);
This query gives output by summing b,c wise. But when i run the inner query it gives error as "not a group by expression "
My question is - though the inner query is wrong, how is it possible that this query gives output.
it behaves like -
Select b,c,qty from (select b,c,sum(d) qty from tab_xyz group by b,c);
Is it a normal behaviour ?
If it is a normal behaviour, then how group by behaves inside a inner query.
Thanks !!This case I have tested already and it throws error.
But why the initial posted query is not throwing
error even the inner query is wrong.
In what way oracle behaves for the initial posted
query?what is the scenario that throws the error? is it at the time when you only run the inner query or the whole query? -
Hi!
Since the last update to KDE 4.2.2 plasma causes all of the PCs that run with Archlinux and KDE to raise my CPU usage to 100%.
It's always caused by plasma and did not happen before with version 4.2.1
Does anyone have the same experience? How can I fix this?
It's very annoying especially on the Laptops and Netbooks I'm running with KDE....
Or should I file a bug report or am I the only one experiencing this?Sorry for the thread necromancy, but I have the same problem.
At first there was no problems. I had installed kdemod to test it after spending long time with fluxbox and gtk apps. At that time there were no problems. For whatever reason I decided to reinstall Arch and put only KDEmod on it.
Hellooo plasma hogging the cpu. I have no calendar plasmoid. I have no plasmoids on the desktop at all. There are couple of them on the taskbar:
kmenu (or whatever it is called), stasks, systray, pager, digital clock.
The digital clock has a calendar when I click it. Testing with no digital clock plasmoid right now.
A full clean reinstall of kde mod didn't help, either. Did anyone found the source of the hogging? -
Xcode using 100% cpu even with no projects open: Solution
Symptom:
I had a very strange problem with Xcode 3.2.1 on Snow Leopard 10.6.2. As soon as I opened a project, Xcode would start using 100% of the cpu. It would continue doing this even after I closed ALL open projects. Xcode was using 100% cpu (200% actually) even while idle! Xcode would also often hang. I tried deleting Xcode and reinstalling twice. That didn't help. After much searching and trial and error I discovered the problem and the solution:
Problem:
I had an SCM entry defined from a previous remote site session in the SCM tab of the Xcode preferences. This site was no longer responding to requests, and apparently Xcode was continually trying to connect. Apparently the preferences were saved across the uninstall even though I used the shell script to uninstall all the developer tools.
Solution:
Delete the unavailable repository from the SCM tab in Xcode preferences.
I hope this saves someone the aggravation this problem has caused me.
David MaynardPost to the developer forums under OS X Technologies.
-
Safari loads 100% CPU while opening a webpage when working in cooperation with DeviceLock
I have Safari 5.0.5 and DeviceLock 7.1 installed on same computer running Windows XP x86.
When I confugure any network protocol settings in Devicelock (to make its network module active), Safari loads 100% CPU while opening any webpage, for example http://www.apple.com/startpage/
This issue doesn't occurs on other browsers - Internet Explorer, Firefox, so I assume the issue belongs to Safari, not to DeviceLock.It may not be DeviceLock, or Windows. I see (via Activity Monitor) Safari use 100% CPU while loading a new page on my G5 iMac. Then it drops back again. It may be something to do with Safari 5.0.5
-
100% CPU after connecting with RDP
Hi,
We have a W2K3 SP2 vmware guest server running in our network. It's a member server. It has only Lotus domino installed.
But since last week that after connecting via RDP (doesn't matter to connect to console or any session) or with vwware console that the server CPU peaks 100% and don't allow connecting nor working with it.
We have to force shutdown from ESXi host.
Does anybody know what could be the cause.
Thanks,Hi,
You may need to use Task Manager, Resource Monitor or Process Explorer to check which process causes 100% CPU usage.
Thanks.
Jeremy Wu
TechNet Community Support
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