How to improve speed of laptop
how to increase speed of laptop
Hello CP.S.PATEL_30,
Have you made any changes before you meet this speed issue?
Does this issue occur just after the system boot?
Please take the following steps for troubleshooting:
1. Open the Task Manager and check which program or process occupy large amount of system resource.
2. Use the Windows Performance Toolkit to analyze the performance
http://msdn.microsoft.com/en-us/library/windows/hardware/hh162945.aspx
Best regards,
Fangzhou CHEN
Fangzhou CHEN
TechNet Community Support
Similar Messages
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How to improve speed of data acquisition? Help needed urgently.
I want to convert analog signals to digital signals and simultaneously perform some search on the data acquired and this whole process has to be done continuously for few hours.
So I tried writing two programs in Matlab, one acquires the analog data and converts it to digital and saves the data in small chunks on hard disk (like file1, file2, file3,...) continuously. The other program performs the search operation in those chunks of data continuously. I run both the programs at a time by opening two mat lab windows.
But the problem Iam facing is that the data acquisition is slow. As a result I get an error message in the second program saying that
"??? Error using ==> load
Unable to read file file4.mat: No such file or directory."
Iam unable to synchronize the two programs. I cannot use timers in search program because I cannot add any delays.
Iam using a NI PCI-6036E ,16 Bit Resolution ,200 KS/s Sampling Rate A/D board.
Should I switch to some other series such as M series having sampling rate of the order MS/s?
Can anyone please tell me how to improve the speed of data acquisition?
Thanks.Gayathri wrote:
I want to convert analog signals to digital signals and simultaneously perform some search on the data acquired and this whole process has to be done continuously for few hours.
So I tried writing two programs in Matlab, one acquires the analog data and converts it to digital and saves the data in small chunks on hard disk (like file1, file2, file3,...) continuously. The other program performs the search operation in those chunks of data continuously. I run both the programs at a time by opening two mat lab windows.
But the problem Iam facing is that the data acquisition is slow. As a result I get an error message in the second program saying that
"??? Error using ==> load
Unable to read file file4.mat: No such file or directory."
Iam unable to synchronize the two programs. I cannot use timers in search program because I cannot add any delays.
Iam using a NI PCI-6036E ,16 Bit Resolution ,200 KS/s Sampling Rate A/D board.
Should I switch to some other series such as M series having sampling rate of the order MS/s?
Can anyone please tell me how to improve the speed of data acquisition?
Thanks.
Hi gayathri,
well my email is [email protected]
if ur from india mail me back.
Regards
labview boy -
How to improve speed of queries that use ORM one table per concrete class
Hi,
Many tools that make ORM (Object Relational Mapping) like Castor, Hibernate, Toplink, JPOX, etc.., have the one table per concrete class feature that maps objects to follow structure:
CREATE TABLE ABSTRACTPRODUCT (
ID VARCHAR(8) NOT NULL,
DESCRIPTION VARCHAR(60) NOT NULL,
PRIMARY KEY(ID)
CREATE TABLE PRODUCT (
ID VARCHAR(8) NOT NULL REFERENCES ABSTRACTPRODUCT(ID),
CODE VARCHAR(10) NOT NULL,
PRICE DECIMAL(12,2),
PRIMARY KEY(ID)
CREATE UNIQUE INDEX iProduct ON Product(code)
CREATE TABLE BOOK (
ID VARCHAR(8) NOT NULL REFERENCES PRODUCT(ID),
AUTHOR VARCHAR(60) NOT NULL,
PRIMARY KEY (ID)
CREATE TABLE COMPACTDISK (
ID VARCHAR(8) NOT NULL REFERENCES PRODUCT(ID),
ARTIST VARCHAR(60) NOT NULL,
PRIMARY KEY(ID)
there is a way to improve queries like
SELECT
pd.code CODE,
abpd.description DESCRIPTION,
DECODE(bk.id,NULL,cd.artist,bk.author) PERSON
FROM
ABSTRACTPRODUCT abpd,
PRODUCT pd,
BOOK bk,
COMPACTDISK cd
WHERE
pd.id = abpd.id AND
bk.id(+) = abpd.id AND
cd.id(+) = abpd.id AND
pd.code like '101%'
or like this:
SELECT
pd.code CODE,
abpd.description DESCRIPTION,
DECODE(bk.id,NULL,cd.artist,bk.author) PERSON
FROM
ABSTRACTPRODUCT abpd,
PRODUCT pd,
BOOK bk,
COMPACTDISK cd
WHERE
pd.id = abpd.id AND
bk.id(+) = abpd.id AND
cd.id(+) = abpd.id AND
abpd.description like '%STARS%' AND
pd.price BETWEEN 1 AND 10
think in a table with many rows, then exists something inside MaxDB to improve this type of queries? like some anotations on SQL? or declare tables that extends another by PK? on other databases i managed this using Materialized Views, but i think that this can be faster just using PK, i'm wrong? the better is to consolidate all tables in one table? what is the impact on database size with this consolidation?
note: with consolidation i will miss NOT NULL constraint at database side.
thanks for any insight.
ClóvisHi Lars,
i dont understand because the optimizer get that Index for TM at execution plan, and because dont use the join via KEY column, note the WHERE clause is "TM.OID = MF.MY_TIPO_MOVIMENTO" by the key column, and the optimizer uses an INDEX that the indexed column is ID_SYS, that isnt and cant be a primary key, because its not UNIQUE, follow the index columns:
indexes of TipoMovimento
INDEXNAME COLUMNNAME SORT COLUMNNO DATATYPE LEN INDEX_USED FILESTATE DISABLED
ITIPOMOVIMENTO TIPO ASC 1 VARCHAR 2 220546 OK NO
ITIPOMOVIMENTO ID_SYS ASC 2 CHAR 6 220546 OK NO
ITIPOMOVIMENTO MY_CONTA_DEBITO ASC 3 CHAR 8 220546 OK NO
ITIPOMOVIMENTO MY_CONTA_CREDITO ASC 4 CHAR 8 220546 OK NO
ITIPOMOVIMENTO1 ID_SYS ASC 1 CHAR 6 567358 OK NO
ITIPOMOVIMENTO2 DESCRICAO ASC 1 VARCHAR 60 94692 OK NO
after i create the index iTituloCobrancaX7 on TituloCobranca(OID,DATA_VENCIMENTO) in a backup instance and get surprised with the follow explain:
OWNER TABLENAME COLUMN_OR_INDEX STRATEGY PAGECOUNT
TC ITITULOCOBRANCA1 RANGE CONDITION FOR INDEX 5368
DATA_VENCIMENTO (USED INDEX COLUMN)
MF OID JOIN VIA KEY COLUMN 9427
TM OID JOIN VIA KEY COLUMN 22
TABLE HASHED
PS OID JOIN VIA KEY COLUMN 1350
BOL OID JOIN VIA KEY COLUMN 497
NO TEMPORARY RESULTS CREATED
JDBC_CURSOR_19 RESULT IS COPIED , COSTVALUE IS 988
note that now the optimizer gets the index ITITULOCOBRANCA1 as i expected, if i drop the new index iTituloCobrancaX7 the optimizer still getting this execution plan, with this the query executes at 110 ms, with that great news i do same thing in the production system, but the execution plan dont changes, and i still getting a long execution time this time at 413516 ms. maybe the problem is how optimizer measure my tables.
i checked in DBAnalyser that the problem is catalog cache hit rate (we discussed this at [catalog cache hit rate, how to increase?|;
) and the low selectivity of this SQL command, then its because of this that to achieve a better selectivity i must have an index with, MF.MY_SACADO, MF.TIPO and TC.DATA_VENCIMENTO, as explained in previous posts, since this type of index inside MaxDB isnt possible, i have no choice to speed this type of query without changing tables structure.
MaxDB developers can develop this type of index? or a feature like this dont have any plans to be made?
if no, i must create another schema, to consolidate tables to speed queries on my system, but with this consolidation i will get more overhead, i must solve the less selectivity because i think if the data on tables increase, the query becomes impossible, i see that CREATE INDEX supports FUNCTION, maybe a FUNCTION that join data of two tables can solve this?
about instance configuration it is:
Machine:
Version: '64BIT Kernel'
Version: 'X64/LIX86 7.6.03 Build 007-123-157-515'
Version: 'FAST'
Machine: 'x86_64'
Processors: 2 ( logical: 8, cores: 8 )
data volumes:
ID MODE CONFIGUREDSIZE USABLESIZE USEDSIZE USEDSIZEPERCENTAGE DROPVOLUME TOTALCLUSTERAREASIZE RESERVEDCLUSTERAREASIZE USEDCLUSTERAREASIZE PATH
1 NORMAL 4194304 4194288 379464 9 NO 0 0 0 /db/SPDT/data/data01.dat
2 NORMAL 4194304 4194288 380432 9 NO 0 0 0 /db/SPDT/data/data02.dat
3 NORMAL 4194304 4194288 379184 9 NO 0 0 0 /db/SPDT/data/data03.dat
4 NORMAL 4194304 4194288 379624 9 NO 0 0 0 /db/SPDT/data/data04.dat
5 NORMAL 4194304 4194288 380024 9 NO 0 0 0 /db/SPDT/data/data05.dat
log volumes:
ID CONFIGUREDSIZE USABLESIZE PATH MIRRORPATH
1 51200 51176 /db/SPDT/log/log01.dat ?
parameters:
KERNELVERSION KERNEL 7.6.03 BUILD 007-123-157-515
INSTANCE_TYPE OLTP
MCOD NO
_SERVERDB_FOR_SAP YES
_UNICODE NO
DEFAULT_CODE ASCII
DATE_TIME_FORMAT ISO
CONTROLUSERID DBM
CONTROLPASSWORD
MAXLOGVOLUMES 2
MAXDATAVOLUMES 11
LOG_VOLUME_NAME_001 /db/SPDT/log/log01.dat
LOG_VOLUME_TYPE_001 F
LOG_VOLUME_SIZE_001 6400
DATA_VOLUME_NAME_0005 /db/SPDT/data/data05.dat
DATA_VOLUME_NAME_0004 /db/SPDT/data/data04.dat
DATA_VOLUME_NAME_0003 /db/SPDT/data/data03.dat
DATA_VOLUME_NAME_0002 /db/SPDT/data/data02.dat
DATA_VOLUME_NAME_0001 /db/SPDT/data/data01.dat
DATA_VOLUME_TYPE_0005 F
DATA_VOLUME_TYPE_0004 F
DATA_VOLUME_TYPE_0003 F
DATA_VOLUME_TYPE_0002 F
DATA_VOLUME_TYPE_0001 F
DATA_VOLUME_SIZE_0005 524288
DATA_VOLUME_SIZE_0004 524288
DATA_VOLUME_SIZE_0003 524288
DATA_VOLUME_SIZE_0002 524288
DATA_VOLUME_SIZE_0001 524288
DATA_VOLUME_MODE_0005 NORMAL
DATA_VOLUME_MODE_0004 NORMAL
DATA_VOLUME_MODE_0003 NORMAL
DATA_VOLUME_MODE_0002 NORMAL
DATA_VOLUME_MODE_0001 NORMAL
DATA_VOLUME_GROUPS 1
LOG_BACKUP_TO_PIPE NO
MAXBACKUPDEVS 2
LOG_MIRRORED NO
MAXVOLUMES 14
LOG_IO_BLOCK_COUNT 8
DATA_IO_BLOCK_COUNT 64
BACKUP_BLOCK_CNT 64
_DELAY_LOGWRITER 0
LOG_IO_QUEUE 50
_RESTART_TIME 600
MAXCPU 8
MAX_LOG_QUEUE_COUNT 0
USED_MAX_LOG_QUEUE_COUNT 8
LOG_QUEUE_COUNT 1
MAXUSERTASKS 500
_TRANS_RGNS 8
_TAB_RGNS 8
_OMS_REGIONS 0
_OMS_RGNS 7
OMS_HEAP_LIMIT 0
OMS_HEAP_COUNT 8
OMS_HEAP_BLOCKSIZE 10000
OMS_HEAP_THRESHOLD 100
OMS_VERS_THRESHOLD 2097152
HEAP_CHECK_LEVEL 0
_ROW_RGNS 8
RESERVEDSERVERTASKS 16
MINSERVERTASKS 28
MAXSERVERTASKS 28
_MAXGARBAGE_COLL 1
_MAXTRANS 4008
MAXLOCKS 120080
_LOCK_SUPPLY_BLOCK 100
DEADLOCK_DETECTION 4
SESSION_TIMEOUT 180
OMS_STREAM_TIMEOUT 30
REQUEST_TIMEOUT 5000
_IOPROCS_PER_DEV 2
_IOPROCS_FOR_PRIO 0
_IOPROCS_FOR_READER 0
_USE_IOPROCS_ONLY NO
_IOPROCS_SWITCH 2
LRU_FOR_SCAN NO
_PAGE_SIZE 8192
_PACKET_SIZE 131072
_MINREPLY_SIZE 4096
_MBLOCK_DATA_SIZE 32768
_MBLOCK_QUAL_SIZE 32768
_MBLOCK_STACK_SIZE 32768
_MBLOCK_STRAT_SIZE 16384
_WORKSTACK_SIZE 8192
_WORKDATA_SIZE 8192
_CAT_CACHE_MINSIZE 262144
CAT_CACHE_SUPPLY 131072
INIT_ALLOCATORSIZE 262144
ALLOW_MULTIPLE_SERVERTASK_UKTS NO
_TASKCLUSTER_01 tw;al;ut;2000*sv,100*bup;10*ev,10*gc;
_TASKCLUSTER_02 ti,100*dw;63*us;
_TASKCLUSTER_03 equalize
_DYN_TASK_STACK NO
_MP_RGN_QUEUE YES
_MP_RGN_DIRTY_READ DEFAULT
_MP_RGN_BUSY_WAIT DEFAULT
_MP_DISP_LOOPS 2
_MP_DISP_PRIO DEFAULT
MP_RGN_LOOP -1
_MP_RGN_PRIO DEFAULT
MAXRGN_REQUEST -1
_PRIO_BASE_U2U 100
_PRIO_BASE_IOC 80
_PRIO_BASE_RAV 80
_PRIO_BASE_REX 40
_PRIO_BASE_COM 10
_PRIO_FACTOR 80
_DELAY_COMMIT NO
_MAXTASK_STACK 512
MAX_SERVERTASK_STACK 500
MAX_SPECIALTASK_STACK 500
_DW_IO_AREA_SIZE 50
_DW_IO_AREA_FLUSH 50
FBM_VOLUME_COMPRESSION 50
FBM_VOLUME_BALANCE 10
_FBM_LOW_IO_RATE 10
CACHE_SIZE 262144
_DW_LRU_TAIL_FLUSH 25
XP_DATA_CACHE_RGNS 0
_DATA_CACHE_RGNS 64
XP_CONVERTER_REGIONS 0
CONVERTER_REGIONS 8
XP_MAXPAGER 0
MAXPAGER 64
SEQUENCE_CACHE 1
_IDXFILE_LIST_SIZE 2048
VOLUMENO_BIT_COUNT 8
OPTIM_MAX_MERGE 500
OPTIM_INV_ONLY YES
OPTIM_CACHE NO
OPTIM_JOIN_FETCH 0
JOIN_SEARCH_LEVEL 0
JOIN_MAXTAB_LEVEL4 16
JOIN_MAXTAB_LEVEL9 5
_READAHEAD_BLOBS 32
CLUSTER_WRITE_THRESHOLD 80
CLUSTERED_LOBS NO
RUNDIRECTORY /var/opt/sdb/data/wrk/SPDT
OPMSG1 /dev/console
OPMSG2 /dev/null
_KERNELDIAGFILE knldiag
KERNELDIAGSIZE 800
_EVENTFILE knldiag.evt
_EVENTSIZE 0
_MAXEVENTTASKS 2
_MAXEVENTS 100
_KERNELTRACEFILE knltrace
TRACE_PAGES_TI 2
TRACE_PAGES_GC 20
TRACE_PAGES_LW 5
TRACE_PAGES_PG 3
TRACE_PAGES_US 10
TRACE_PAGES_UT 5
TRACE_PAGES_SV 5
TRACE_PAGES_EV 2
TRACE_PAGES_BUP 0
KERNELTRACESIZE 5369
EXTERNAL_DUMP_REQUEST NO
_AK_DUMP_ALLOWED YES
_KERNELDUMPFILE knldump
_RTEDUMPFILE rtedump
_UTILITY_PROTFILE dbm.utl
UTILITY_PROTSIZE 100
_BACKUP_HISTFILE dbm.knl
_BACKUP_MED_DEF dbm.mdf
_MAX_MESSAGE_FILES 0
_SHMKERNEL 44601
__PARAM_CHANGED___ 0
__PARAM_VERIFIED__ 2008-05-03 23:12:55
DIAG_HISTORY_NUM 2
DIAG_HISTORY_PATH /var/opt/sdb/data/wrk/SPDT/DIAGHISTORY
_DIAG_SEM 1
SHOW_MAX_STACK_USE NO
SHOW_MAX_KB_STACK_USE NO
LOG_SEGMENT_SIZE 2133
_COMMENT
SUPPRESS_CORE YES
FORMATTING_MODE PARALLEL
FORMAT_DATAVOLUME YES
OFFICIAL_NODE
UKT_CPU_RELATIONSHIP NONE
HIRES_TIMER_TYPE CPU
LOAD_BALANCING_CHK 30
LOAD_BALANCING_DIF 10
LOAD_BALANCING_EQ 5
HS_STORAGE_DLL libhsscopy
HS_SYNC_INTERVAL 50
USE_OPEN_DIRECT YES
USE_OPEN_DIRECT_FOR_BACKUP NO
SYMBOL_DEMANGLING NO
EXPAND_COM_TRACE NO
JOIN_TABLEBUFFER 128
SET_VOLUME_LOCK YES
SHAREDSQL YES
SHAREDSQL_CLEANUPTHRESHOLD 25
SHAREDSQL_COMMANDCACHESIZE 262144
MEMORY_ALLOCATION_LIMIT 0
USE_SYSTEM_PAGE_CACHE YES
USE_COROUTINES YES
FORBID_LOAD_BALANCING YES
MIN_RETENTION_TIME 60
MAX_RETENTION_TIME 480
MAX_SINGLE_HASHTABLE_SIZE 512
MAX_HASHTABLE_MEMORY 5120
ENABLE_CHECK_INSTANCE YES
RTE_TEST_REGIONS 0
HASHED_RESULTSET YES
HASHED_RESULTSET_CACHESIZE 262144
CHECK_HASHED_RESULTSET 0
AUTO_RECREATE_BAD_INDEXES NO
AUTHENTICATION_ALLOW
AUTHENTICATION_DENY
TRACE_AK NO
TRACE_DEFAULT NO
TRACE_DELETE NO
TRACE_INDEX NO
TRACE_INSERT NO
TRACE_LOCK NO
TRACE_LONG NO
TRACE_OBJECT NO
TRACE_OBJECT_ADD NO
TRACE_OBJECT_ALTER NO
TRACE_OBJECT_FREE NO
TRACE_OBJECT_GET NO
TRACE_OPTIMIZE NO
TRACE_ORDER NO
TRACE_ORDER_STANDARD NO
TRACE_PAGES NO
TRACE_PRIMARY_TREE NO
TRACE_SELECT NO
TRACE_TIME NO
TRACE_UPDATE NO
TRACE_STOP_ERRORCODE 0
TRACE_ALLOCATOR 0
TRACE_CATALOG 0
TRACE_CLIENTKERNELCOM 0
TRACE_COMMON 0
TRACE_COMMUNICATION 0
TRACE_CONVERTER 0
TRACE_DATACHAIN 0
TRACE_DATACACHE 0
TRACE_DATAPAM 0
TRACE_DATATREE 0
TRACE_DATAINDEX 0
TRACE_DBPROC 0
TRACE_FBM 0
TRACE_FILEDIR 0
TRACE_FRAMECTRL 0
TRACE_IOMAN 0
TRACE_IPC 0
TRACE_JOIN 0
TRACE_KSQL 0
TRACE_LOGACTION 0
TRACE_LOGHISTORY 0
TRACE_LOGPAGE 0
TRACE_LOGTRANS 0
TRACE_LOGVOLUME 0
TRACE_MEMORY 0
TRACE_MESSAGES 0
TRACE_OBJECTCONTAINER 0
TRACE_OMS_CONTAINERDIR 0
TRACE_OMS_CONTEXT 0
TRACE_OMS_ERROR 0
TRACE_OMS_FLUSHCACHE 0
TRACE_OMS_INTERFACE 0
TRACE_OMS_KEY 0
TRACE_OMS_KEYRANGE 0
TRACE_OMS_LOCK 0
TRACE_OMS_MEMORY 0
TRACE_OMS_NEWOBJ 0
TRACE_OMS_SESSION 0
TRACE_OMS_STREAM 0
TRACE_OMS_VAROBJECT 0
TRACE_OMS_VERSION 0
TRACE_PAGER 0
TRACE_RUNTIME 0
TRACE_SHAREDSQL 0
TRACE_SQLMANAGER 0
TRACE_SRVTASKS 0
TRACE_SYNCHRONISATION 0
TRACE_SYSVIEW 0
TRACE_TABLE 0
TRACE_VOLUME 0
CHECK_BACKUP NO
CHECK_DATACACHE NO
CHECK_KB_REGIONS NO
CHECK_LOCK NO
CHECK_LOCK_SUPPLY NO
CHECK_REGIONS NO
CHECK_TASK_SPECIFIC_CATALOGCACHE NO
CHECK_TRANSLIST NO
CHECK_TREE NO
CHECK_TREE_LOCKS NO
CHECK_COMMON 0
CHECK_CONVERTER 0
CHECK_DATAPAGELOG 0
CHECK_DATAINDEX 0
CHECK_FBM 0
CHECK_IOMAN 0
CHECK_LOGHISTORY 0
CHECK_LOGPAGE 0
CHECK_LOGTRANS 0
CHECK_LOGVOLUME 0
CHECK_SRVTASKS 0
OPTIMIZE_AGGREGATION YES
OPTIMIZE_FETCH_REVERSE YES
OPTIMIZE_STAR_JOIN YES
OPTIMIZE_JOIN_ONEPHASE YES
OPTIMIZE_JOIN_OUTER YES
OPTIMIZE_MIN_MAX YES
OPTIMIZE_FIRST_ROWS YES
OPTIMIZE_OPERATOR_JOIN YES
OPTIMIZE_JOIN_HASHTABLE YES
OPTIMIZE_JOIN_HASH_MINIMAL_RATIO 1
OPTIMIZE_OPERATOR_JOIN_COSTFUNC YES
OPTIMIZE_JOIN_PARALLEL_MINSIZE 1000000
OPTIMIZE_JOIN_PARALLEL_SERVERS 0
OPTIMIZE_JOIN_OPERATOR_SORT YES
OPTIMIZE_QUAL_ON_INDEX YES
DDLTRIGGER YES
SUBTREE_LOCKS NO
MONITOR_READ 2147483647
MONITOR_TIME 2147483647
MONITOR_SELECTIVITY 0
MONITOR_ROWNO 0
CALLSTACKLEVEL 0
OMS_RUN_IN_UDE_SERVER NO
OPTIMIZE_QUERYREWRITE OPERATOR
TRACE_QUERYREWRITE 0
CHECK_QUERYREWRITE 0
PROTECT_DATACACHE_MEMORY NO
LOCAL_REDO_LOG_BUFFER_SIZE 0
FILEDIR_SPINLOCKPOOL_SIZE 10
TRANS_HISTORY_SIZE 0
TRANS_THRESHOLD_VALUE 60
ENABLE_SYSTEM_TRIGGERS YES
DBFILLINGABOVELIMIT 70L80M85M90H95H96H97H98H99H
DBFILLINGBELOWLIMIT 70L80L85L90L95L
LOGABOVELIMIT 50L75L90M95M96H97H98H99H
AUTOSAVE 1
BACKUPRESULT 1
CHECKDATA 1
EVENT 1
ADMIN 1
ONLINE 1
UPDSTATWANTED 1
OUTOFSESSIONS 3
ERROR 3
SYSTEMERROR 3
DATABASEFULL 1
LOGFULL 1
LOGSEGMENTFULL 1
STANDBY 1
USESELECTFETCH YES
USEVARIABLEINPUT NO
UPDATESTAT_PARALLEL_SERVERS 0
UPDATESTAT_SAMPLE_ALGO 1
SIMULATE_VECTORIO IF_OPEN_DIRECT_OR_RAW_DEVICE
COLUMNCOMPRESSION YES
TIME_MEASUREMENT NO
CHECK_TABLE_WIDTH NO
MAX_MESSAGE_LIST_LENGTH 100
SYMBOL_RESOLUTION YES
PREALLOCATE_IOWORKER NO
CACHE_IN_SHARED_MEMORY NO
INDEX_LEAF_CACHING 2
NO_SYNC_TO_DISK_WANTED NO
SPINLOCK_LOOP_COUNT 30000
SPINLOCK_BACKOFF_BASE 1
SPINLOCK_BACKOFF_FACTOR 2
SPINLOCK_BACKOFF_MAXIMUM 64
ROW_LOCKS_PER_TRANSACTION 50
USEUNICODECOLUMNCOMPRESSION NO
about send you the data from tables, i dont have permission to do that, since all data is in a production system, the customer dont give me the rights to send any information. sorry about that.
best regards
Clóvis -
HT5957 How to improve speed in Iphone 4 using ios 7
I am using Iphone 4 and updated IOS 7, But speed is very in compare to last version. Please advice me to increase the speed.
Opening contact very low.
call to any number is very low.Hi edumaravilla,
Welcome to the Support Communities!
The following information will explain how Airplay has changed in iOS 7:
iOS: Using AirPlay
http://support.apple.com/kb/HT4437
Here are some troubleshooting steps for Airplay:
iOS: Troubleshooting AirPlay and AirPlay Mirroring
http://support.apple.com/kb/TS4215
Cheers,
- Judy -
My Iphone 3g is so slow, can anyone help by giving suggestions on how to improve speed?
Can anyone help?My Iphone 3g is so slow and can you help by giving suggestions?
hi guys...i have managed to do this but i think there is still something wrong...can any kind soul point out the mistakes? thanx!
class Lab_04
public static int wrongans = 0;
public static int score = 100;
public static double probability1 = 0.81;
public static double probability2 = 0.3;
public static double probability3 = 0.95;
public static double probability4 = 0.13;
public static double probability5 = 0.79;
public static double probability6 = 0.83;
public static double probability7 = 0.32;
public static double probability8 = 0.68;
public static void main(String[] args) {
if (Math.random() >= probability1) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability2) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability3) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability4) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability5) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability6) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability7) {
System.out.print("O");}
else {
wrongans++;
System.out.print("X");
if (Math.random() >= probability8) {
System.out.print("O");}
else {
wrongans++;
System.out.println("X");
System.out.println ("Score (out of 100):" + (score-(20*wrongans)));
} -
Gents,
I'm having an Java app which is logging "messages" into another another window(emulating the console with some clever functionality). In this window I'm using a JTextArea for displaying messages, and it seems that repainting this JTextArea is a bottleneck for performance... Do some of you have experience about the topic and some ideas of how to improve speed ?
Maybe use a simpler component than JTextArea, but I need copy&paste functionality in there ?
Cheers,
PrebenI feel the need...the need for speed!Sounds like my last 2 weeks! We developed filters for the database to clean some data and projected comletion of the run with filtes was 135 days for the first set (not good, especially since 17 different algorithms had to be applied). We've steadily brought it down, so now a run takes about 16 minutes.
speed... Speed... SPEED... I feel the need! -
How to improve the speed for backing up files to time capsule via in hose wifi?
How to improve the speed for backing up files to time capsule via in hose wifi?
via in hose wifi?
Use a bigger hose??
House??
Need to spell this out a bit more..
But speed via 2.4ghz to the TC is restricted by Apple to max 130mbps link speed.. much slower actual transfer.. latest TC and laptops can do 450mbps on 5ghz but you need to be up close.. so place the TC near the device using it.. and force 5ghz connection by using a different name for 5ghz network. -
How can I improve speed on iMovie?
How can I improve speed on iMovie?
Hello jaquade,
Thanks for using Apple Support Communities.
For more information on this, take a look at:
iMovie: Tips to improve performance
http://support.apple.com/kb/TA27648?viewlocale=en_US
Best of luck,
Mario -
How to improve sql perfomance/access speed by altering session parameters
Dear friends
how to improve sql perfomance/access speed by altering the session parameters? without altering indexes & sql expression
regrads
Edited by: sak on Mar 14, 2011 2:10 PM
Edited by: sak on Mar 14, 2011 2:43 PMOne can try:
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:3696883368520
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:5180609822543
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/memory.htm#sthref497
But make sure you understand the caveats you can run into!
It would be better to post the outcome of select * from v$version; first.
Also and execution plan would be nice to see.
See:
When your query takes too long ...
HOW TO: Post a SQL statement tuning request - template posting -
How to improve this query speed ?....help me
How to improve the query speed. Any hints can u suggest in the query or any correction. Here i am using sample tables for checking purpose, When i am trying with my original values, this type of query taking longer time to run
select ename,sal,comm from emp where(comm is null and &status='ok') or (comm is not null and &status='failed');
Thanx in advance
prasanth a.s.What about
select ename,sal,comm from emp where comm is null and &status='ok'
union all
select ename,sal,comm from emp where comm is not null and &status='failed';
Regards
Vaishnavi -
How to improve spreadsheet speed when single-threaded VBA is the bottleneck.
My brother works with massive Excel spreadsheets and needs to speed them up. Gigabytes in size and often with a million rows and many sheets within the workbook. He's already refined the sheets to take advantage of Excel's multi-thread recalculation and
seen significant improvements, but he's hit a stumbling block. He uses extensive VBA code to aid clarity, but the VB engine is single-threaded, and these relatively simple functions can be called millions of times. Some functions are trivial (e.g. conversion
functions) and just for clarity and easily unwound (at the expense of clarity), some could be unwound but that would make the spreadsheets much more complex, and others could not be unwound.
He's aware of http://www.analystcave.com/excel-vba-multithreading-tool/ and similar tools but they don't help as the granularity is insufficiently fine.
So what can he do? A search shows requests for multi-threaded VBA going back over a decade.
qtsHi,
>> The VB engine is single-threaded, and these relatively simple functions can be called millions of times.
The Office Object Model is
Single-Threaded Apartments, if the performance bottleneck is the Excel Object Model operation, the multiple-thread will not improve the performance significantly.
>> How to improve spreadsheet speed when single-threaded VBA is the bottleneck.
The performance optimization should be based on the business. Since I’m not familiar with your business, so I can only give you some general suggestions from the technical perspective. According to your description, the size of the spreadsheet had reached
Gigabytes and data volume is about 1 million rows. If so, I will suggest you storing the data to SQL Server and then use the analysis tools (e.g. Power Pivot).
Create a memory-efficient Data Model using Excel 2013
and the Power Pivot add-in
As
ryguy72 suggested, you can also leverage some other third party data processing tool
according to your business requirement.
Regards,
Jeffrey
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It takes hours (2-3 or more) to download updates to various software. I use my iPhone in personal hotspot mode paired to my laptop to do this. How can i speed up the downloads?
It's a function of your iPhone's data speed, which is a function of your physical location and your carrier. Talk to your carrier about increasing your data speed (probalby unlikely) or get dedicated internet to connect your computer to, i.e. cable, fiber, etc.
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How to improve the response speed
Dear Consultants,
In BI 7.0 EP Environment, displaying 40000 detailed records wasted 3 minutes, this speed is slowly.
How to improve the response speed ?
Please give me some proposals and methods to solve this question.
Thanks a lot & Best Regards
RickyHello,
3min. is not so bad for 40000 rows of data. Firstly you can analyze where the time spent is it olap or DB. you can use RSRT for analysis.
Then,
1. Create aggregates
2. Use caching and precalculation
3. check 'Use Selection of Structure Elements' from properties of query in RSRT
4. Remove unnecessary calculations from query
5. remove unnecessary rows. try to make them free characteristics.
6. If there is unused data in infocube, you can archive this data.
regards, -
I have a macbook pro 13’ (late 2011) 2.8Ghz Intel i7 memory 4GB 1333 MHz DDR3 and have upgraded my OS X Lion to Mavericks 10.9.5. Everything has slowed down and the battery lasts a bit earlier. How do I go back to the older OS X Lion? Or should I improve speed differently? Would improving memory to 8GB help?
i have run the EntreCheck and here is the report:
EtreCheck version: 1.9.15 (52)
Report generated 28 September 2014 16:16:39 GMT+3
Hardware Information: ?
MacBook Pro (13-inch, Late 2011) (Verified)
MacBook Pro - model: MacBookPro8,1
1 2.8 GHz Intel Core i7 CPU: 2 cores
4 GB RAM
Video Information: ?
Intel HD Graphics 3000 - VRAM: 384 MB
Color LCD 1280 x 800
System Software: ?
OS X 10.9.5 (13F34) - Uptime: 0 days 4:59:22
Disk Information: ?
TOSHIBA MK7559GSXF disk0 : (750.16 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) / [Startup]: 749.3 GB (203.96 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
MATSHITADVD-R UJ-8A8
USB Information: ?
Apple Inc. FaceTime HD Camera (Built-in)
Vodafone (ZTE) Vodafone Mobile Broadband K3565-Z
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ?
Apple Inc. thunderbolt_bus
Gatekeeper: ?
Mac App Store and identified developers
Kernel Extensions: ?
[not loaded] com.ZTE.driver.ModemDriverMac (1.0.2d1) Support
[loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.1) Support
[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.1) Support
[not loaded] com.roxio.BluRaySupport (1.1.6) Support
[not loaded] com.roxio.TDIXController (2.0) Support
Startup Items: ?
HWNetMgr: Path: /Library/StartupItems/HWNetMgr
HWPortDetect: Path: /Library/StartupItems/HWPortDetect
StartOuc: Path: /Library/StartupItems/StartOuc
Launch Daemons: ?
[running] cn.com.zte.PPPMonitor.plist Support
[loaded] com.adobe.fpsaud.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
[running] PPPMonitord.plist Support
Launch Agents: ?
[running] cn.com.zte.usbswapper.plist Support
[running] com.hp.devicemonitor.plist Support
[loaded] com.hp.messagecenter.launcher.plist Support
[running] Swapper.plist Support
User Login Items: ?
iTunesHelper
Dropbox
Internet Plug-ins: ?
SharePointBrowserPlugin: Version: 14.0.0 Support
FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support
Flash Player: Version: 15.0.0.152 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
Default Browser: Version: 537 - SDK 10.9
Safari Extensions: ?
AdBlock-2
Audio Plug-ins: ?
BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
AirPlay: Version: 2.0 - SDK 10.9
AppleAVBAudio: Version: 203.2 - SDK 10.9
iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins: ?
Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
3rd Party Preference Panes: ?
Flash Player Support
MacFUSE Support
Tuxera NTFS Support
Time Machine: ?
Time Machine not configured!
Top Processes by CPU: ?
5% Safari
3% WindowServer
2% BitTorrent
2% hidd
0% softwareupdated
Top Processes by Memory: ?
229 MB Safari
160 MB softwareupdated
156 MB com.apple.WebKit.WebContent
135 MB com.apple.IconServicesAgent
102 MB VLC
Virtual Memory Information: ?
45 MB Free RAM
1.55 GB Active RAM
1.52 GB Inactive RAM
895 MB Wired RAM
628 MB Page-ins
0 B Page-outs -
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