IDS Forum

Help parameters RA_PAGES,RA_THRESHOLD

Posted By: ANGEL MARIA RUIZ GARZON
Date: Friday, 27 February 2004, at 3:15 p.m.

I have doubts with respect to these parametros, as I should calculate that so that the readings in secueciales in temporary it is mas fast.

# Read Ahead Variables
#RA_PAGES 4 # Number of pages to attempt to read ahead
RA_PAGES 4000 # Number of pages to attempt to read ahead
#RA_THRESHOLD 2 # Number of pages left before next group
RA_THRESHOLD 2000 # Number of pages left before next group

onconfig.
nfiguration File: /opt/informixids/etc/onconfig.omicron
#**************************************************************************
#
# INFORMIX SOFTWARE, INC.
#
# Title: onconfig.omicron
# Description: Informix Dynamic Server Configuration Parameters
# Elaborado por Angel Ruiz Mayo 1 de 2003
# Actualizaciones
#**************************************************************************

# Root Dbspace Configuration

ROOTNAME rootdbs # Root dbspace name
ROOTPATH /dev/inf1/rootdbs # Path for device containing root dbspace
ROOTOFFSET 0 # Offset of root dbspace into device (Kbytes)
ROOTSIZE 286720 # Size of root dbspace (Kbytes)

# Disk Mirroring Configuration Parameters

MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
MIRRORPATH # Path for device containing mirrored root
MIRROROFFSET 0 # Offset into mirrored device (Kbytes)

# Physical Log Configuration

PHYSDBS phyv1 # Location (dbspace) of physical log
PHYSFILE 8014 # Physical log file size (Kbytes)

# Logical Log Configuration

LOGFILES 60 # Number of logical log files
LOGSIZE 4000 # Logical log size (Kbytes)

# Diagnostics

MSGPATH /opt/informixids/online.log # System message log file path
CONSOLE /dev/console # System console message path
ALARMPROGRAM /opt/informixids/etc/log_full.sh # Alarm program path
TBLSPACE_STATS 1 # Maintain tblspace statistics

# System Archive Tape Device

TAPEDEV /dev/rmt/0m # Tape device path
TAPEBLK 20 # Tape block size (Kbytes)
TAPESIZE 23101440 # Maximum amount of data to put on tape (Kbytes)

# Log Archive Tape Device

LTAPEDEV sigma:/dev/rmt/0m # Log tape device path
LTAPEBLK 20 # Log tape block size (Kbytes)
LTAPESIZE 1850000 # Max amount of data to put on log tape (Kbytes)

# Optical

STAGEBLOB # Informix Dynamic Server staging area

# System Configuration

SERVERNUM 0 # Unique id corresponding to a OnLine instance
DBSERVERNAME omicron # Name of default database server
DBSERVERALIASES omicron_sh # List of alternate dbservernames
#NETTYPE ipcshm,1,100,CPU # Configure poll thread(s) for nettype
#NETTYPE soctcp,1,300,NET # Configure poll thread(s) for nettype
NETTYPE soctcp,4,60,NET # Configure poll thread(s) for nettype
DEADLOCK_TIMEOUT 60 # Max time to wait of lock in distributed env.
RESIDENT 1 # Forced residency flag (Yes = 1, No = 0)

MULTIPROCESSOR 0 # 0 for single-processor, 1 for multi-processor
#NUMCPUVPS 1 # Number of user (cpu) vps
VPCLASS cpu,num=1,noage
VPCLASS aio,num=10
#VPCLASS aio,num=5
#VPCLASS aio,num=8
SINGLE_CPU_VP 1 # If non-zero, limit number of cpu vps to one
#SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps to one

#NOAGE 0 # Process aging
#AFF_SPROC 0 # Affinity start processor
#AFF_NPROCS 0 # Affinity number of processors

# Shared Memory Parameters

LOCKS 250000 # Maximum number of locks
#BUFFERS 30000 # Maximum number of shared buffers
BUFFERS 40000 # Maximum number of shared buffers
#BUFFERS 60000 # Maximum number of shared buffers
#NUMAIOVPS 2 # Number of IO vps
PHYSBUFF 500 # Physical log buffer size (Kbytes)
LOGBUFF 64 # Logical log buffer size (Kbytes)
CLEANERS 8 # Number of buffer cleaner processes
#CLEANERS 4 # Number of buffer cleaner processes
#CLEANERS 6 # Number of buffer cleaner processes
#CLEANERS 5 # Number of buffer cleaner processes
SHMBASE 0x0 # Shared memory base address
SHMVIRTSIZE 229376 # initial virtual shared memory segment size
#SHMADD 65536 # Size of new shared memory segments (Kbytes)
SHMADD 32768 # Size of new shared memory segments (Kbytes)
SHMTOTAL 383020 # Total shared memory (Kbytes). 0=>unlimited
#SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited
CKPTINTVL 240 # Check point interval (in sec)
DD_HASHMAX 5 # Hernando G
DD_HASHSIZE 107 # Hernando G
LRUS 20 # Number of LRU queues
#LRUS 60 # Number of LRU queues
LRU_MAX_DIRTY 3 # LRU percent dirty begin cleaning limit
#LRU_MAX_DIRTY 2 # LRU percent dirty begin cleaning limit
#LRU_MAX_DIRTY 4 # LRU percent dirty begin cleaning limit
#LRU_MAX_DIRTY 70 # LRU percent dirty begin cleaning limit
LRU_MIN_DIRTY 1 # LRU percent dirty end cleaning limit
#LRU_MIN_DIRTY 50 # LRU percent dirty end cleaning limit
TXTIMEOUT 0x12c # Transaction timeout (in sec)
STACKSIZE 64 # Stack size (Kbytes)

# System Page Size
# BUFFSIZE - OnLine no longer supports this configuration parameter.
# To determine the page size used by OnLine on your platform
# see the last line of output from the command, 'onstat -b'.


# Recovery Variables
# OFF_RECVRY_THREADS:
# Number of parallel worker threads during fast recovery or an offline restore.
# ON_RECVRY_THREADS:
# Number of parallel worker threads during an online restore.

OFF_RECVRY_THREADS 10 # Default number of offline worker threads
ON_RECVRY_THREADS 1 # Default number of online worker threads

# Data Replication Variables
DRINTERVAL 30 # DR max time between DR buffer flushes (in sec)
DRTIMEOUT 30 # DR network timeout (in sec)
DRLOSTFOUND /opt/informixids/etc/dr.lostfound # DR lost+found file path

# CDR Variables
CDR_EVALTHREADS 1,2 # evaluator threads (per-cpu-vp,additional)
CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds)
CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR queue (Kbytes)
CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 none, 9 max)
CDR_SERIAL 0,0 # Serial Column Sequence
CDR_DBSPACE # dbspace for syscdr database
CDR_QHDR_DBSPACE # CDR queue dbspace (default same as catalog)
CDR_QDATA_SBSPACE # CDR queue smart blob space
CDR_QDATA_SBFLAGS 0 # Log/no-log (default no log)


# Backup/Restore variables
BAR_ACT_LOG /opt/informixids/bar_act.log
# ON-Bar Log file - not in /tmp please
BAR_DEBUG_LOG /opt/informixids/bar_dbug.log
# ON-Bar Debug Log - not in /tmp please
BAR_MAX_BACKUP 0
BAR_RETRY 1
BAR_NB_XPORT_COUNT 10
BAR_XFER_BUF_SIZE 31
RESTARTABLE_RESTORE on
BAR_PROGRESS_FREQ 0

# Informix Storage Manager variables
ISM_DATA_POOL ISMData
ISM_LOG_POOL ISMLogs

# Read Ahead Variables
#RA_PAGES 4 # Number of pages to attempt to read ahead
RA_PAGES 4000 # Number of pages to attempt to read ahead
#RA_THRESHOLD 2 # Number of pages left before next group
RA_THRESHOLD 2000 # Number of pages left before next group

# DBSPACETEMP:
# OnLine equivalent of DBTEMP for SE. This is the list of dbspaces
# that the OnLine SQL Engine will use to create temp tables etc.
# If specified it must be a colon separated list of dbspaces that exist
# when the OnLine system is brought online. If not specified, or if
# all dbspaces specified are invalid, various ad hoc queries will create
# temporary files in /tmp instead.

DBSPACETEMP tempdbs1,tempdbs2 # Default temp dbspaces

# DUMP*:
# The following parameters control the type of diagnostics information which
# is preserved when an unanticipated error condition (assertion failure) occurs
# during OnLine operations.
# For DUMPSHMEM, DUMPGCORE and DUMPCORE 1 means Yes, 0 means No.

DUMPDIR /unload/registros # Preserve diagnostics in this directory
DUMPSHMEM 1 # Dump a copy of shared memory
DUMPGCORE 0 # Dump a core image using 'gcore'
DUMPCORE 0 # Dump a core image (Warning:this aborts OnLine)
DUMPCNT 1 # Number of shared memory or gcore dumps for
# a single user's session

FILLFACTOR 96 # Fill factor for building indexes

# method for OnLine to use when determining current time
USEOSTIME 0 # 0: use internal time(fast), 1: get time from OS(slow)

# Parallel Database Queries (pdq)
MAX_PDQPRIORITY 50 # Maximum allowed pdqpriority
DS_MAX_QUERIES 2 # Maximum number of decision support queries
DS_TOTAL_MEMORY 2048 # Decision support memory (Kbytes)
DS_MAX_SCANS 120 # Maximum number of decision support scans
DS_HASHSIZE 107 # Hernando G
DS_POOLSIZE 10 # Hernando G
DATASKIP off # List of dbspaces to skip

# OPTCOMPIND
# 0 => Nested loop joins will be preferred (where
# possible) over sortmerge joins and hash joins.
# 1 => If the transaction isolation mode is not
# "repeatable read", optimizer behaves as in (2)
# below. Otherwise it behaves as in (0) above.
# 2 => Use costs regardless of the transaction isolation
# mode. Nested loop joins are not necessarily
# preferred. Optimizer bases its decision purely
# on costs.

OPTCOMPIND 1 # To hint the optimizer, vigente desde 6/Feb/2004
#OPTCOMPIND 0 # To hint the optimizer
#OPTCOMPIND 2 # To hint the optimizer

DIRECTIVES 1 # Optimizer DIRECTIVES ON (1/Default) or OFF (0)

ONDBSPACEDOWN 2 # Dbspace down option: 0 = CONTINUE, 1 = ABORT, 2 = WAIT
OPCACHEMAX 0 # Maximum optical cache size (Kbytes)

# HETERO_COMMIT (Gateway participation in distributed transactions)
# 1 => Heterogeneous Commit is enabled
# 0 (or any other value) => Heterogeneous Commit is disabled
HETERO_COMMIT 0

SBSPACENAME # Default smartblob space name - this is where blobs
# go if no sbspace is specified when the smartblob is
# created. It is also used by some datablades as
# the location to put their smartblobs.
SYSSBSPACENAME # Default smartblob space for use by the Informix
# Server. This is used primarily for Informix Server
# system statistics collection.

BLOCKTIMEOUT 3600 # Default timeout for system block
SYSALARMPROGRAM /opt/informixids/etc/evidence.sh # System Alarm program path

# Optimization goal: -1 = ALL_ROWS(Default), 0 = FIRST_ROWS
OPT_GOAL -1

ALLOW_NEWLINE 0 # embedded newlines(Yes = 1, No = 0 or anything but 1)

DYNAMIC_LOGS 0
LTXHWM 70
LTXEHWM 80


STMT_CACHE 2 # Hernando G
#STMT_CACHE_HITS 10 # Hernando G
#STMT_CACHE_SIZE 1024 # Hernando G
#STMT_CACHE_NOLIMIT 0 # Hernando G
#STMT_CACHE_NUMPOOL 4 # Hernando G
PC_HASHSIZE 30 # Tamano del cache de Stores procedures
PC_POOLSIZE 300 # Numero de Stores Procedures guardados en cache

#============================================================================================
# HISTORIAL DEL CAMBIO DE PARAMETROS
#============================================================================================
#
# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#
# Parametro---- ----- Valor ---- Motivo---------------------------
# Anterior Nuevo
# 28/Mayo/2003
# SINGLE_CPU_VP 0 1 Porque solo tenemos una CPU fisica
# VPCLASS cpu,num=1,noage Nuevo parametro que reemplaza 5 viejos
# VPCLASS aio,num=6 Nuevo parametro que reemplaza 5 viejos
# NUMCPUVPS 1 Fue reemplazado por VPCLASS
# NOAGE 0 Fue reemplazado por VPCLASS
# AFF_SPROC 0 Fue reemplazado por VPCLASS
# AFF_NPROC 0 Fue reemplazado por VPCLASS
# NUMAIOVPS 2 Fue reemplazado por VPCLASS
#
# Comentarios : Mejoro notablemente el desempeno de las apliaciones y la comunicacion entre
# las bases de datos.
#
# Fecha : 29/Mayo/2003 - 12:30PM *******************************************
#
# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#
# Parametro---- ----- Valor ---- Motivo---------------------------
# Anterior Nuevo
# 29/Mayo/2003
# LRU_MAX_DIRTY 2 3 porque se estaba generando el doble de
# escrituras LRU vs las de Chunk
# Comentarios : Balanceo las escrituras de LRU y Chunk.
#
# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#
# Parametro---- ----- Valor ---- Motivo---------------------------
# Anterior Nuevo
# 29/Mayo/2003
# SHMVIRTSIZE 131072 196608 Se incrementa para evitar segmentacion
# SHMADD 65536 32768 Se dismunuye porque no es necesrio un
# un valor tan grande.
# SHMTOTAL 361972 350252 Se disminuye por la misma razon.
#
# 05/Agosto/2003
# SHMVIRTSIZE 196608 229376 Se incrementa por funcionamiento del kernel AIO
# SHMTOTAL 350252 383020 Estaba creando un segmento adicional de memoria
# virtual
# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#
# Parametro---- ----- Valor ---- Motivo---------------------------
# Anterior Nuevo
# 6/Febrero/2004
# OPTCOMPIND 0 1 Con este cambio se busca mejorar la estrategia
# de planeacion que utiliza IDS para la
# ejecucion de QUERYS.(el valor de 1 es el
# recomendado en el "Administraotr's guide"
#
# STMT_CACHE NA 2 Iinicia la cahce para los SQL con el fin de
# mejorar el desempeno.
# LRUS 60 20 Disminuir el numero de colas mejorar el rendimiento
# VPCLASS aio,num=8 5 Con kaio no se requiere tener tantas y mejora rendimiento
#
# 18 Febrero/2004
#
# VPCLASS aio,num=8 10 Como no mejoro rendimiento se aumenta de 8 a 10
# CLEANERS 4 8 y se aumentan para revisar comportamiento de ckpoint
#=========================================================================================
# Febrero 25 de 2004
# Anterior Nuevo
#
# NETTYPE soctcp,4,60,NET 1,300,NET # Se recomienda un socket por cada CPU
#
# Febrero 26 de 2004
#
# NETTYPE soctcp,1,300,NET 4,60,NET # No es peor recomendacion no validad
#
#============================================================================================

Messages In This Thread

• Help parameters RA_PAGES,RA_THRESHOLD
  ANGEL MARIA RUIZ GARZON -- Friday, 27 February 2004, at 3:15 p.m.
  • Re: Help parameters RA_PAGES,RA_THRESHOLD
    Jorge Garcia -- Friday, 27 February 2004, at 10:10 p.m.
  • RE: Help parameters RA_PAGES,RA_THRESHOLD
    Obnoxio The Clown -- Sunday, 29 February 2004, at 7:01 p.m.
  • Re: Help parameters RA_PAGES,RA_THRESHOLD
    Gerd Kaluzinski -- Monday, 1 March 2004, at 3:18 a.m.

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