NQSConfig.ini performance tweaking

Hello all,
I hope everyone had a wonderful holiday season.
I have a question, that I've seen popping-out before, but I can't seem to locate it.
Are there settings in NQSConfig that could be customized (from default) in order to improve performance of the BI system. I'd appreciate to hear few hints and tips.
Thanks
Wild

Good one mma!
I think it's a NO during development.
I'm talking about cache size etc. Thanks

Similar Messages

Syntax error in NQSConfig.ini.file

# NQSConfig.INI
# Copyright (c) 1997-2006 Oracle Corporation, All rights reserved
# INI file parser rules are:
# If values are in literals, digits or _, they can be
# given as such. If values contain characters other than
# literals, digits or _, values must be given in quotes.
# Repository Section
# Repositories are defined as logical repository name - file name
# pairs. ODBC drivers use logical repository name defined in this
# section.
# All repositories must reside in OracleBI\server\Repository
# directory, where OracleBI is the directory in which the Oracle BI
# Server software is installed.
[ REPOSITORY ]
Star     =     OracleBIAnalyticsApps.rpd, DEFAULT
# Query Result Cache Section
[ CACHE ]
ENABLE     =     NO;
// A comma separated list of <directory maxSize> pair(s)
// e.g. DATA_STORAGE_PATHS = "d:\OracleBIData\nQSCache" 500 MB;
DATA_STORAGE_PATHS     =     "C:\OracleBIData\cache" 500 MB;
MAX_ROWS_PER_CACHE_ENTRY = 100000; // 0 is unlimited size
MAX_CACHE_ENTRY_SIZE = 1 MB;
MAX_CACHE_ENTRIES = 1000;
POPULATE_AGGREGATE_ROLLUP_HITS = NO;
USE_ADVANCED_HIT_DETECTION = NO;
MAX_SUBEXPR_SEARCH_DEPTH = 7;
// Cluster-aware cache
// GLOBAL_CACHE_STORAGE_PATH = "<directory name>" SIZE;
// MAX_GLOBAL_CACHE_ENTRIES = 1000;
// CACHE_POLL_SECONDS = 300;
// CLUSTER_AWARE_CACHE_LOGGING = NO;
# General Section
# Contains general server default parameters, including localization
# and internationalization, temporary space and memory allocation,
# and other default parameters used to determine how data is returned
# from the server to a client.
[ GENERAL ]
// Localization/Internationalization parameters.
LOCALE     =     "English-usa";
SORT_ORDER_LOCALE     =     "English-usa";
SORT_TYPE = "binary";
// Case sensitivity should be set to match the remote
// target database.
CASE_SENSITIVE_CHARACTER_COMPARISON = OFF ;
// SQLServer65 sorts nulls first, whereas Oracle sorts
// nulls last. This ini file property should conform to
// that of the remote target database, if there is a
// single remote database. Otherwise, choose the order
// that matches the predominant database (i.e. on the
// basis of data volume, frequency of access, sort
// performance, network bandwidth).
NULL_VALUES_SORT_FIRST = OFF;
DATE_TIME_DISPLAY_FORMAT = "yyyy/mm/dd hh:mi:ss" ;
DATE_DISPLAY_FORMAT = "yyyy/mm/dd" ;
TIME_DISPLAY_FORMAT = "hh:mi:ss" ;
// Temporary space, memory, and resource allocation
// parameters.
// You may use KB, MB for memory size.
WORK_DIRECTORY_PATHS     =     "C:\OracleBIData\tmp";
SORT_MEMORY_SIZE = 4 MB ;
SORT_BUFFER_INCREMENT_SIZE = 256 KB ;
VIRTUAL_TABLE_PAGE_SIZE = 128 KB ;
// Analytics Server will return all month and day names as three
// letter abbreviations (e.g., "Jan", "Feb", "Sat", "Sun").
// To use complete names, set the following values to YES.
USE_LONG_MONTH_NAMES = NO;
USE_LONG_DAY_NAMES = NO;
UPPERCASE_USERNAME_FOR_INITBLOCK = NO ; // default is no
// Aggregate Persistence defaults
// The prefix must be between 1 and 8 characters long
// and should not have any special characters ('_' is allowed).
AGGREGATE_PREFIX = "SA_" ;
# Security Section
# Legal value for DEFAULT_PRIVILEGES are:
# NONE READ
[ SECURITY ]
DEFAULT_PRIVILEGES = READ;
PROJECT_INACCESSIBLE_COLUMN_AS_NULL     =     NO;
MINIMUM_PASSWORD_LENGTH     =     0;
#IGNORE_LDAP_PWD_EXPIRY_WARNING = NO; // default is no.
#SSL=NO;
#SSL_CERTIFICATE_FILE="servercert.pem";
#SSL_PRIVATE_KEY_FILE="serverkey.pem";
#SSL_PK_PASSPHRASE_FILE="serverpwd.txt";
#SSL_PK_PASSPHRASE_PROGRAM="sitepwd.exe";
#SSL_VERIFY_PEER=NO;
#SSL_CA_CERTIFICATE_DIR="CACertDIR";
#SSL_CA_CERTIFICATE_FILE="CACertFile";
#SSL_TRUSTED_PEER_DNS="";
#SSL_CERT_VERIFICATION_DEPTH=9;
#SSL_CIPHER_LIST="";
# There are 3 types of authentication. The default is NQS
# You can select only one of them
#----- 1 -----
#AUTHENTICATION_TYPE = NQS; // optional and default
#----- 2 -----
#AUTHENTICATION_TYPE = DATABASE;
# [ DATABASE ]
# DATABASE = "some_data_base";
#----- 3 -----
#AUTHENTICATION_TYPE = BYPASS_NQS;
# Server Section
[ SERVER ]
SERVER_NAME = Oracle_BI_Server ;
READ_ONLY_MODE = NO;     // default is "NO". That is, repositories can be edited online.
MAX_SESSION_LIMIT = 2000 ;
MAX_REQUEST_PER_SESSION_LIMIT = 500 ;
SERVER_THREAD_RANGE = 40-100;
SERVER_THREAD_STACK_SIZE = 0; // default is 256 KB, 0 for default
DB_GATEWAY_THREAD_RANGE = 40-200;
DB_GATEWAY_THREAD_STACK_SIZE = 0; // default is 256 KB, 0 for default
MAX_EXPANDED_SUBQUERY_PREDICATES = 8192; // default is 8192
MAX_QUERY_PLAN_CACHE_ENTRIES = 1024; // default is 1024
MAX_DRILLDOWN_INFO_CACHE_ENTRIES = 1024; // default is 1024
MAX_DRILLDOWN_QUERY_CACHE_ENTRIES = 1024; // default is 1024
INIT_BLOCK_CACHE_ENTRIES = 20; // default is 20
CLIENT_MGMT_THREADS_MAX = 5; // default is 5
# The port number specified with RPC_SERVICE_OR_PORT will NOT be considered if
# a port number is specified in SERVER_HOSTNAME_OR_IP_ADDRESSES.
RPC_SERVICE_OR_PORT = 9703; // default is 9703
# If port is not specified with a host name or IP in the following option, the port
# number specified at RPC_SERVICE_OR_PORT will be considered.
# When port number is specified, it will override the one specified with
# RPC_SERVICE_OR_PORT.
SERVER_HOSTNAME_OR_IP_ADDRESSES = "ALLNICS"; # Example: "hostname" or "hostname":port
# or "IP1","IP2":port or
# "hostname":port,"IP":port2.
# Note: When this option is active,
# CLUSTER_PARTICIPANT should be set to NO.
ENABLE_DB_HINTS = YES; // default is yes
PREVENT_DIVIDE_BY_ZERO = YES;
CLUSTER_PARTICIPANT = NO; # If this is set to "YES", comment out
# SERVER_HOSTNAME_OR_IP_ADDRESSES. No specific NIC support
# for the cluster participant yet.
// Following required if CLUSTER_PARTICIPANT = YES
#REPOSITORY_PUBLISHING_DIRECTORY = "<dirname>";
#REQUIRE_PUBLISHING_DIRECTORY = YES; // Don't join cluster if directory not accessible
DISCONNECTED = NO;
AUTOMATIC_RESTART = YES;
# Dynamic Library Section
# The dynamic libraries specified in this section
# are categorized by the CLI they support.
[ DB_DYNAMIC_LIBRARY ]
ODBC200 = nqsdbgatewayodbc;
ODBC350 = nqsdbgatewayodbc35;
OCI7 = nqsdbgatewayoci7;
OCI8 = nqsdbgatewayoci8;
OCI8i = nqsdbgatewayoci8i;
OCI10g = nqsdbgatewayoci10g;
DB2CLI = nqsdbgatewaydb2cli;
DB2CLI35 = nqsdbgatewaydb2cli35;
NQSXML = nqsdbgatewayxml;
XMLA = nqsdbgatewayxmla;
ESSBASE = nqsdbgatewayessbasecapi;
# User Log Section
# The user log NQQuery.log is kept in the server\log directory. It logs
# activity about queries when enabled for a user. Entries can be
# viewed using a text editor or the nQLogViewer executable.
[ USER_LOG ]
USER_LOG_FILE_SIZE = 10 MB; // default size
CODE_PAGE = "UTF8"; // ANSI, UTF8, 1252, etc.
# Usage Tracking Section
# Collect usage statistics on each logical query submitted to the
# server.
[ USAGE_TRACKING ]
ENABLE = YES;
//==============================================================================
// Parameters used for writing data to a flat file (i.e. DIRECT_INSERT = NO).
STORAGE_DIRECTORY = "<full directory path>";
CHECKPOINT_INTERVAL_MINUTES = 5;
FILE_ROLLOVER_INTERVAL_MINUTES = 30;
CODE_PAGE = "ANSI"; // ANSI, UTF8, 1252, etc.
//==============================================================================
DIRECT_INSERT = YES;
//==============================================================================
// Parameters used for inserting data into a table (i.e. DIRECT_INSERT = YES).
PHYSICAL_TABLE_NAME = "OBI Usage Tracking"."Catalog"."dbo"."S_NQ_ACCT" ; // Or "<Database>"."<Schema>"."<Table>" ;
CONNECTION_POOL = "OBI Usage Tracking"."Usage Tracking Writer Connection Pool>" ;
BUFFER_SIZE = 10 MB ;
BUFFER_TIME_LIMIT_SECONDS = 5 ;
NUM_INSERT_THREADS = 5 ;
MAX_INSERTS_PER_TRANSACTION = 1 ;
//==============================================================================
# Query Optimization Flags
[ OPTIMIZATION_FLAGS ]
STRONG_DATETIME_TYPE_CHECKING = ON ;
# CubeViews Section
[ CUBE_VIEWS ]
DISTINCT_COUNT_SUPPORTED = NO ;
STATISTICAL_FUNCTIONS_SUPPORTED = NO ;
USE_SCHEMA_NAME = YES ;
USE_SCHEMA_NAME_FROM_RPD = YES ;
DEFAULT_SCHEMA_NAME = "ORACLE";
CUBE_VIEWS_SCHEMA_NAME = "ORACLE";
LOG_FAILURES = YES ;
LOG_SUCCESS = NO ;
LOG_FILE_NAME     =     "C:\OracleBI\server\Log\CubeViews.Log";
# MDX Member Name Cache Section
# Cache subsystem for mapping between unique name and caption of
# members for all SAP/BW cubes in the repository.
[ MDX_MEMBER_CACHE ]
// The entry to indicate if the feature is enabled or not, by default it is NO since this only applies to SAP/BW cubes
ENABLE = NO ;
// The path to the location where cache will be persisted, only applied to a single location,
// the number at the end indicates the capacity of the storage. When the feature is enabled,
// administrator needs to replace the "<full directory path>" with a valid path,
// e.g. DATA_STORAGE_PATH = "C:\OracleBI\server\Data\Temp\Cache" 500 MB ;
DATA_STORAGE_PATH     =     "C:\OracleBIData\cache" 500 MB;
// Maximum disk space allowed for each user;
MAX_SIZE_PER_USER = 100 MB ;
// Maximum number of members in a level will be able to be persisted to disk
MAX_MEMBER_PER_LEVEL = 1000 ;
// Maximum size for each individual cache entry size
MAX_CACHE_SIZE = 100 MB ;
# Oracle Dimension Export Section
[ ORA_DIM_EXPORT ]
USE_SCHEMA_NAME_FROM_RPD = YES ; # NO
DEFAULT_SCHEMA_NAME = "ORACLE";
ORA_DIM_SCHEMA_NAME = "ORACLE";
LOGGING = ON ; # OFF, DEBUG
LOG_FILE_NAME     =     "C:\OracleBI\server\Log\OraDimExp.Log";
Help me out Gurus thanks in advance

Hi,
Star = OracleBIAnalyticsApps.rpd, DEFAULTthis should be end with semicolon
Star = OracleBIAnalyticsApps.rpd, DEFAULT;
Assign Points and close thread, if your question is answered...
Cheers,
Aravind

Issue with nqsconfig.ini

HI,
It couldn't reflect in nqsconfig.ini file, while i was disabling cache in EM. Can anyone please clarify my doubt.
Thanks,

Now can you pls correct me if i am wrong that after purging the server cache and * not pruging presentation server cache * IBOT will take the latest data from the database.Yes it will take latest data from DB and your right .If you purge server cache everything is cleaned up and when presentation server is run it should talk to BI server to fetch the details so as to accomodate the presentation server cache as requested.
There is another method to purge cache after every ETL run,you need to create an ibot to fire it and write a custom script so it purges the old data and we need to schedule it after the ETL run...so it cleans up data and when end user comes next day and want to see fresh data it is there to see.It might help you
http://vivekkulthe.blogspot.com/2008/08/purging-cache-using-ibots.html
To improve performance of reports you can do this http://blog.guident.com/2009/12/many-dashboards-on-most-systems-can-be.html
Cheers,
KK

Changes to NQSCONFIG.INI in obiee 11g is not working???

I modified NQSCONFIG.INI in obiee 11g and restarted BI services but what ever changes I did are gone. how can I modify NQSCONFIG.INI OR INSTANCECONFIG.XML files?

As per documentation: e10541
A.1.1 How to Update Parameters in NQSConfig.INI
The following procedure explains how to update parameters in NQSConfig.INI.
To update parameters in NQSConfig.INI:
Open the NQSConfig.INI file in a text editor. You can find this file at:
ORACLE_INSTANCE/config/OracleBIServerComponent/coreapplication_obisn
Make a backup copy of the file before editing.
Locate and update the parameter you want to change.
Save and close the file.
Restart the Oracle BI Server. For more information, see Section 4.1, "About Starting and Stopping Oracle Business Intelligence."
If you have multiple Oracle BI Server instances, then repeat these steps in each NQSConfig.INI file for all Oracle BI Server instances.
Antonio

LOCALE and SORT_ORDER_LOCALE in NQSConfig.ini

hi experts,
there are 2 parameters for Localization/Internationalization in NQSConfig.ini
I run this query to get the info. of the database.
select * from nls_database_parameters;
and the results are:
=============================================
NLS_LANGUAGE     AMERICAN
NLS_TERRITORY     AMERICA
NLS_CURRENCY     $
NLS_ISO_CURRENCY     AMERICA
NLS_NUMERIC_CHARACTERS     .,
NLS_CHARACTERSET     JA16SJIS
NLS_CALENDAR     GREGORIAN
NLS_DATE_FORMAT     DD-MON-RR
NLS_DATE_LANGUAGE     AMERICAN
NLS_SORT     BINARY
NLS_TIME_FORMAT     HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT     DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT     HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT     DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY     $
NLS_COMP     BINARY
NLS_LENGTH_SEMANTICS     BYTE
NLS_NCHAR_CONV_EXCP     FALSE
NLS_NCHAR_CHARACTERSET     AL16UTF16
NLS_RDBMS_VERSION     9.2.0.7.0
=============================================
what LOCALE and SORT_ORDER_LOCALE should be ?
LOCALE     =     "Japanese";
SORT_ORDER_LOCALE     =     "Japanese";
thanks

hi,
Pls have a look
http://download.oracle.com/docs/cd/E12103_01/books/AnyInConfig/AnyInConfigNQSConfigFileRef8.html
If it founds helpful award points
thanks,
saichand.v

OBIEE10g: Even after changing NQSConfig.INI it still loads the old rpd.

New rpd name has been updated in NQSConfig.INI file and the services have been restarted manually. Still in the presentation services, i get the old RPD.
The log file of both the NQServer.log and <NewRPD>.rpd.Log says that new rpd has been loaded.
Is there anything that I am missing? Is there any way to save the new RPD directly as Online mode?
I am using OBIEE 10g as a standalone on Windows xp.
Thanks,
Prem.

The rpd doesnt come up in the list of available Online rpd's.
I did check the log file again (changing the rpd name), it shows as loaded and also the subject area under it.
Still stuck with this issue.
Regards,
Prem.

NQSConfig.ini

Hi all,
I was doing this repository and catalog migration from Dev to Prod. My version is 11g. So, I did this from Weblogic Enterprise Manager usning Deployment option. Now, I notice that the user cannot see My Folders in Analysis. And moreover I noticed, the NQSConfig.ini file did not replace the repository name with the latest one, because I changed the repository name in Prod before uploading. Please assist. What is going wrong?
Any help is appreciated.
Thanks.

Hi Lakshmipathi, thanks for your prompt response. On Prod, I checked the NQSConfig.ini file to check which repository it is point to. I copied the same repository across environments. Renamed it on Dev. And then uploaded it along with the catalog. I restarted the server as well. But the NQSConfig.ini seems the same with the old repository name. Please let me know if you need to know any other info...

Instanceconfig.xml and Nqsconfig.ini

Hi Experts,
what is the main purpose of Instanceconfig.xml file and Nqsconfig.ini file what are the functions we are going to set in these both files.
Thanks,

In OBIEE 10g, Instanceconfig.xml is the main configuration file of the BI Presentation server. In OBIEE 11g though, Instanceconfig.xml is also the configuration file for BI Scheduler. Nqsconfig.ini is the main configuration file for the BI Server both in 10g and 11g.
There are a lot of parameters that can be set within both the config files, it will depend on what the need is.
Please mark if helpful/correct.

Back up of Nqsconfig.ini ?????

HI All,
I deleted the Nqsconfig.ini file by mistake from the Linux server where OBIEE was installed. I tried to replace it by copying a Nqsconfig.ini file which i had in the windows environment , but the OBIEE server is not starting.
Is there anyway I can get a back up of Nqsconfig.ini file. or is there any solution for this problem?
Thanks

If you copied the file from a Windows server then you need to run the Linux command dos2unix to convert the file format to Unix. Then of course you should modify any relevant parameters in tour NQSConfig.ini for your Linux installation. The easiest thing will probably be to shutdown your current Linux installation, create a temp folder and move your existing installation there. Then do a new dummy installation in the same directory. When it is finished then make a copy of the NQSConfig.ini, trash the dummy installation and restore your previous installation. Windows boys, no chance of you guying doing this trick, Windows is too dirty to install all the files of a program in a single directory like the majority of Unix/Linux programs do! ;)

File NQSConfig.INI

Hello friends I'm from Chile. can support me to the next topic
What is it the name of the file contains information about That Which queries for data is cached.
Because in NQSConfig.INI is a parameter called METADA_FILE which I want to add
thanks for your help

I really don't understand your question.
There is no parameter called "METADA(TA)_FILE" in the NQSConfig.INI file. Neither it is in the [url http://download.oracle.com/docs/cd/E14571_01/bi.1111/e10541/configfileref.htm#i1076541]documentation.
If you want to view the queries which have been cached, you can use the BI Administration tool. There is a cache viewer in menu Manage / Cache.
M.

NQSconfig.ini file multiple rpd

Hi
I am using 11g linux box.I set 2 rpd file in my NQSConfig.ini file like
[Repository]
RPD1 = ACDNEW_BI0010.rpd, DEFAULT;
RPD2 = ACDNEW_BI0009.rpd;
I have one BI server it running 9703 port.
Now how can i connect 2 rpd at same time in my online mode.
Thankd
Gram

Hi,
No more this feature/option in obiee11g (it's working only obiee10g) ..for running multiple RPD in same server u should go with obiee11g installation with multiple instance (try to user instance 2 as custom port)
For more refer
http://docs.oracle.com/cd/E21764_01/bi.1111/e10539/c2_scenarios.htm#CHDDIDGE
Thanks
Deva

Full form of NQS in NQSConfig.ini file.

Hello Experts,
Out of curiosity I would like to know the full form of NQS in NQSConfig.ini file.
Regards,
Mohammed
Edited by: Mohammed_owb on Mar 30, 2010 5:54 AM
Edited by: Mohammed_owb on Mar 30, 2010 5:57 AM

Okay so time for some History..
1) Nquire makes a software called "nquire suites". nQuire launched its nQuire suite of products in late 1999 to monitor and deliver real-time intelligence based on any fact-based problem or opportunity by initiating an e-mail or page to any device, such as a laptop, pager, PDA, RIM, U.S. and European mobile phones.
2) Siebel buys Nquire for $65 million in late 2001 ( http://www.internetnews.com/ent-news/article.php/894791 ) and renames it as "Siebel Analytics"
3) Oracle buys Siebel in 2005 and renames it as "Oracle Business Intelligence" in 2007.
So basically, NQSconfig stands for Nquire Server Config..
-Vinay

Rpd set in NQSConfig.INI before server starts is overwritten while startup

hi gurus
I set a Abc.rpd in NQSConfig.INI before i startup server but after startup SampleAppLite.rpd is shown in Analysis/NQSConfig.INI :(
any inputs will help?
thank you...

thanks for your inputs....
my bad....I should've spelled the details better....
after trying the EM->deployment route, despite showing the Name_BI0001.rpd in EM screen, after bouncing services, Analysis failed to pick up my desired rpd but showed the default samplelite.rpd...
so I thought of doing it differently , as in edit the .ini file to see if it picks up but as i said it failed to read from .ini instead overwrote the .ini with ssamplelite.rpd

Audio and Video Performance Tweaking

Hey guys I'm back with more questions. I'm trying to improve the overall quality of my video conference experience.   My target market is the elderly and their families, so not necessarly people who are used to computers and tweaking things so we want to make it as good as we can right out of the box.
Video
1.) All of my decoded video has clearly visible blocks. I've attached a sample screen shot to show what I mean. Is there a deblocking filter option I'm missing somewhere?
2.) The encoder in flash player 10.x is still H.263 based right? I'm not missing a secret option to use the H.264 encoder am I?
Audio
1.) I've set my audio codec to speex in my audio publisher, and it looks like it defaults to a quality setting of 10 (<rtc:AudioPublisher id="audioPub" codec="{SoundCodec.SPEEX}"/>). Am I missing any tweaks to improve the audio quality?
Audio questions where I assume the answer is no but I ask anyway
2.) Does the LCCS code or flash player prioritize audio packets over video packets or are they just sent when they're available. I'd like to sacrafice video for audio if it's possible.
3.) Is there a way to better syncronize the video and audio streams. Right now there's a lot of lag between what is said and how the lips move (this is even with peer to peer on the same private network).   I get the idea that there isn't but I thought I'd ask.
4.) Is there anything I can monitor to give me an idea of the current connection performance?   In otherwords can I monitor something and then make my own decicions to reduce the video quality or audio quality based on avaiable bandwidth between the two connected peers?
5.) You secretely have echo cancellation built in but were waiting till now to tell me right? Just kidding.
Thanks as usual
-Eric

Hironmay,
       Thank you for getting back to me, I know I asked a lot in one post there.   It would be nice to have a way for audio packets to be prioritized over video since they need to get there but you can live with dropped video frames.   I'd love to see a way to sync the audio and video up as well. I was just reading about some research where they showed if you can watch someones mouth move while you hear them talk it's equivelant to a 20dB volume increase (referrning to how well the person can understand you.)   I have elderly users so something like that is very important to me.
I agree with you that when I changed the captureAndHeightFactor that the blocks got smaller, but did not go away. I was hoping there was a way to smooth out the edges of the blocks so the boundries don't look so harsh.   I had been looking at flash.media.video in the flex 3.4 language reference and it talks about deblocking. I copied the relevent text from the documentaiton at the end of this message. I was wondering if there was something there I could use.   I'll play around with it some more.
Believe me I've been very vocal about the need for echo cancellation on the Flash Forums
Thanks for the help,
Eric
relevent text from flash.media.video
deblocking
property
deblocking:intIndicates the type of filter applied to decoded video as part of post-processing.      The default value is 0, which lets the video compressor apply a deblocking filter as needed.
Compression of video can result in undesired artifacts. You can use the       deblocking property to set filters that reduce blocking and,      for video compressed using the On2 codec, ringing.
Blocking refers to visible imperfections between the boundaries      of the blocks that compose each video frame. Ringing refers to distorted      edges around elements within a video image.
Two deblocking filters are available: one in the Sorenson codec and one in the On2 VP6 codec.      In addition, a deringing filter is available when you use the On2 VP6 codec.       To set a filter, use one of the following values:
0—Lets the video compressor apply the deblocking filter as needed.
1—Does not use a deblocking filter.
2—Uses the Sorenson deblocking filter.
3—For On2 video only, uses the On2 deblocking filter but no deringing filter.
4—For On2 video only, uses the On2 deblocking and deringing filter.
5—For On2 video only, uses the On2 deblocking and a higher-performance      On2 deringing filter.
If a value greater than 2 is selected for video when you are using      the Sorenson codec, the Sorenson decoder defaults to 2.
Using a deblocking filter has an effect on overall playback performance, and it is usually      not necessary for high-bandwidth video. If a user's system is not powerful enough,       the user may experience difficulties playing back video with a deblocking filter enabled.

What are some system performance tweaks to maximize speed?

I would like to maximize the speed of my 2.0ghz 2gbRAM macbook. What can i do?
The question also includes:
what are some unnecessary files i can delete?

Visit The XLab FAQs and read the FAQ on system optimization.
Deleting files won't make your computer run any faster.
Kappy's Personal Suggestions for OS X Maintenance
For disk repairs use Disk Utility. For situations DU cannot handle the best third-party utilities are: Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.0 is now Intel Mac compatible. TechTool Pro provides additional repair options including file repair and recovery, system diagnostics, and disk defragmentation. TechTool Pro 4.5.2 is Intel Mac compatible; Drive Genius is similar to TechTool Pro in terms of the various repair services provided. The current version, 1.5.1, is Intel Mac compatible.
OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep.
OS X automatically defrags files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive. As for virus protection there are few if any such animals affecting OS X. You can protect the computer easily using the freeware Open Source virus protection software ClamXAV. Personally I would avoid most commercial anti-virus software because of their potential for causing problems.
I would also recommend downloading the shareware utility TinkerTool System that you can use for periodic maintenance such as removing old logfiles and archives, clearing caches, etc.
For emergency repairs install the freeware utility Applejack. If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the commandline.
When you install any new system software or updates be sure to repair the hard drive and permissions beforehand. I also recommend booting into safe mode before doing system software updates.
Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is significant):
1. Retrospect Desktop (Commercial - not yet universal binary)
2. Synchronize! Pro X (Commercial)
3. Synk (Backup, Standard, or Pro)
4. Deja Vu (Shareware)
5. Carbon Copy Cloner (Freeware - not universal binary.)
6. LaCie SilverKeeper (Freeware - not universal binary)
7. PsynchX 2.1.1 and RsyncX 2.1 (Freeware)
The following utilities can also be used for backup, but cannot create bootable clones:
1. Backup (requires a .Mac account with Apple both to get the software and to use it.)
2. Toast
3. Impression
Apple's Backup is a full backup tool capable of also backing up across multiple media such as CD/DVD. However, it cannot create bootable backups. It is primarily an "archiving" utility as are the other two.
Impression and Toast are disk image based backups, only. Particularly useful if you need to backup to CD/DVD across multiple media.
Visit The XLab FAQs and read the FAQs on maintenance, optimization, virus protection, and backup and restore.
Additional suggestions will be found in Mac Maintenance Quick Assist.
Referenced software can be found at www.versiontracker.com and www.macupdate.com.
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NQSConfig.ini performance tweaking

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