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Informix 11.70.TC5DE，带双核处理器的 Windows Vista，8GB RAM，1TB HDD：

在安装此服务器期间，我指定它将用于数据仓库应用程序。这些是安装脚本生成的 onconfig 参数。可以更改这些参数中的任何一个以最大化服务器的性能吗？

#(onconfig.ol_informix1170) -  for data warehousing app.

ROOTNAME rootdbs
ROOTPATH C:\PROGRA~1\IBM\Informix\11.70\OL_INF~2\dbspaces\rootdbs.000
ROOTOFFSET 0
ROOTSIZE 312992
MIRROR 0
MIRRORPATH 
MIRROROFFSET 0

PHYSFILE        49152           
PLOG_OVERFLOW_PATH 
PHYSBUFF 512

LOGFILES        6               
LOGSIZE 10000
DYNAMIC_LOGS 2
LOGBUFF 256

LTXHWM 70
LTXEHWM 80

MSGPATH C:\PROGRA~1\IBM\Informix\11.70\ol_informix1170_1.log
CONSOLE C:\PROGRA~1\IBM\Informix\11.70\ol_informix1170_1.con

TBLTBLFIRST 0
TBLTBLNEXT 0
TBLSPACE_STATS 1

DBSPACETEMP tempdbs
SBSPACETEMP 

SBSPACENAME sbspace
SYSSBSPACENAME 
ONDBSPACEDOWN 2

SERVERNUM 6
DBSERVERNAME ol_informix1170_1
DBSERVERALIASES dr_informix1170_1

NETTYPE olsoctcp,1,150,NET
LISTEN_TIMEOUT 60
MAX_INCOMPLETE_CONNECTIONS 1024
FASTPOLL 1
NS_CACHE host=900,service=900,user=900,group=900

MULTIPROCESSOR 0
VPCLASS cpu,num=1,noage
VP_MEMORY_CACHE_KB 0
SINGLE_CPU_VP 1

#VPCLASS aio,num=1
CLEANERS 2
AUTO_AIOVPS 1
DIRECT_IO 0

LOCKS 2000
DEF_TABLE_LOCKMODE page

RESIDENT 0
SHMBASE 0xc000000L
SHMVIRTSIZE 209920
SHMADD 6560
EXTSHMADD 8192
SHMTOTAL 0
SHMVIRT_ALLOCSEG 0,3
#SHMNOACCESS 0x70000000-0x7FFFFFFF

CKPTINTVL 300
AUTO_CKPTS 1
RTO_SERVER_RESTART 60

BLOCKTIMEOUT 3600

CONVERSION_GUARD 2
RESTORE_POINT_DIR $INFORMIXDIR\tmp

TXTIMEOUT 300
DEADLOCK_TIMEOUT 60

HETERO_COMMIT 0

TAPEDEV \\.\TAPE0
TAPEBLK 16
TAPESIZE 0

LTAPEDEV 
LTAPEBLK 16
LTAPESIZE 0

BAR_ACT_LOG $INFORMIXDIR\tmp\bar_act.log
BAR_DEBUG_LOG $INFORMIXDIR\tmp\bar_dbug.log
BAR_DEBUG 0
BAR_MAX_BACKUP 0
BAR_RETRY 1
BAR_NB_XPORT_COUNT 20
BAR_XFER_BUF_SIZE 15
RESTARTABLE_RESTORE ON
BAR_PROGRESS_FREQ 0
BAR_BSALIB_PATH 
BACKUP_FILTER 
RESTORE_FILTER 
BAR_PERFORMANCE 0
BAR_CKPTSEC_TIMEOUT 15

ISM_DATA_POOL ISMData
ISM_LOG_POOL ISMLogs

DD_HASHSIZE 31
DD_HASHMAX 10

DS_HASHSIZE 31

DS_POOLSIZE 127

PC_HASHSIZE 31
PC_POOLSIZE 127
PRELOAD_DLL_FILE 

STMT_CACHE 0
STMT_CACHE_HITS 0
STMT_CACHE_SIZE 512
STMT_CACHE_NOLIMIT 0
STMT_CACHE_NUMPOOL 1

USEOSTIME 0
STACKSIZE 64
ALLOW_NEWLINE 0

USELASTCOMMITTED NONE

FILLFACTOR 90
MAX_FILL_DATA_PAGES 0
BTSCANNER num=1,threshold=5000,rangesize=-1,alice=6,compression=default

ONLIDX_MAXMEM 188928

MAX_PDQPRIORITY 100
DS_MAX_QUERIES 1
DS_TOTAL_MEMORY 188928
DS_MAX_SCANS 1
DS_NONPDQ_QUERY_MEM 188928
DATASKIP 

OPTCOMPIND 2
DIRECTIVES 1
EXT_DIRECTIVES 0
OPT_GOAL -1
IFX_FOLDVIEW 0
AUTO_REPREPARE 1
USTLOW_SAMPLE 0

RA_PAGES 64
RA_THRESHOLD 16
BATCHEDREAD_TABLE 1
BATCHEDREAD_INDEX 1
BATCHEDREAD_KEYONLY 0

EXPLAIN_STAT 1
#SQLTRACE level=low,ntraces=1000,size=2,mode=global

#DBCREATE_PERMISSION informix
#DB_LIBRARY_PATH 
IFX_EXTEND_ROLE 1
SECURITY_LOCALCONNECTION 
UNSECURE_ONSTAT 
ADMIN_USER_MODE_WITH_DBSA 
ADMIN_MODE_USERS 

PLCY_POOLSIZE 127
PLCY_HASHSIZE 31
USRC_POOLSIZE 127

USRC_HASHSIZE 31

STAGEBLOB 
OPCACHEMAX 0

SQL_LOGICAL_CHAR OFF

SEQ_CACHE_SIZE 10

ENCRYPT_HDR 
ENCRYPT_SMX 
ENCRYPT_CDR 0
ENCRYPT_CIPHERS 
ENCRYPT_MAC 
ENCRYPT_MACFILE 
ENCRYPT_SWITCH 

CDR_EVALTHREADS 1,2
CDR_DSLOCKWAIT 5
CDR_QUEUEMEM 4096
CDR_NIFCOMPRESS 0
CDR_SERIAL 0
CDR_DBSPACE 
CDR_QHDR_DBSPACE 
CDR_QDATA_SBSPACE 
CDR_SUPPRESS_ATSRISWARN 
CDR_DELAY_PURGE_DTC 0
CDR_LOG_LAG_ACTION ddrblock
CDR_LOG_STAGING_MAXSIZE 0
CDR_MAX_DYNAMIC_LOGS 0

DRAUTO 0
DRINTERVAL 30
DRTIMEOUT 30
HA_ALIAS 
DRLOSTFOUND $INFORMIXDIR\etc\dr.lostfound
DRIDXAUTO 0
LOG_INDEX_BUILDS 
SDS_ENABLE 
SDS_TIMEOUT 20
SDS_TEMPDBS 
SDS_PAGING 
SDS_LOGCHECK 0
UPDATABLE_SECONDARY 0
FAILOVER_CALLBACK 
FAILOVER_TX_TIMEOUT 0
TEMPTAB_NOLOG 0
DELAY_APPLY 0
STOP_APPLY 0
LOG_STAGING_DIR 
RSS_FLOW_CONTROL 0
ENABLE_SNAPSHOT_COPY 0
SMX_COMPRESS 0

ON_RECVRY_THREADS 2
OFF_RECVRY_THREADS 5

DUMPDIR $INFORMIXDIR\tmp
DUMPSHMEM 1
DUMPGCORE 0
DUMPCORE 0

DUMPCNT 1

ALARMPROGRAM $INFORMIXDIR\etc\alarmprogram.bat
ALRM_ALL_EVENTS 0
#SYSALARMPROGRAM $INFORMIXDIR\etc\evidence.bat
STORAGE_FULL_ALARM 600,3

RAS_PLOG_SPEED  10982           
RAS_LLOG_SPEED 0

EILSEQ_COMPAT_MODE 0

QSTATS 0
WSTATS 0

#VPCLASS         MQ,noyield
MQSERVER 
MQCHLLIB 

MQCHLTAB 

#VPCLASS jvp,num=1
#JVPJAVAHOME    $INFORMIXDIR\extend\krakatoa\jre
#JVPHOME        $INFORMIXDIR\extend\krakatoa
JVPPROPFILE $INFORMIXDIR\extend\krakatoa\.jvpprops
JVPLOGFILE $INFORMIXDIR\jvp.log
#JDKVERSION    1.5
#JVPJAVALIB     \bin
#JVPJAVAVM      jvm
#JVPARGS        -verbose:jni
#JVPCLASSPATH  $INFORMIXDIR\extend\krakatoa\krakatoa_g.jar;$INFORMIXDIR\extend\krakatoa\jdbc_g.jar
JVPARGS -Dcom.ibm.tools.attach.enable=no
JVPCLASSPATH $INFORMIXDIR\extend\krakatoa\krakatoa.jar;$INFORMIXDIR\extend\krakatoa\jdbc.jar

BUFFERPOOL  default,buffers=10000,lrus=8,lru_min_dirty=50.00,lru_max_dirty=60.50
BUFFERPOOL  size=4K,buffers=13108,lrus=16,lru_min_dirty=70.00,lru_max_dirty=80.00
AUTO_LRU_TUNING 1

USERMAPPING OFF

SP_AUTOEXPAND 1
SP_THRESHOLD 0
SP_WAITTIME 30

DEFAULTESCCHAR \

LOW_MEMORY_RESERVE 0
LOW_MEMORY_MGR 0

REMOTE_SERVER_CFG 
REMOTE_USERS_CFG 

S6_USE_REMOTE_SERVER_CFG 0

GSKIT_VERSION 

NETTYPE drsoctcp,1,150,NET
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1 回答 1

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如果它是多处理器机器，请务必考虑MULTIPROCESSOR通过将其设置为非零值来开启。

您对 DSS 最感兴趣的 ONCONFIG 参数是与并行数据查询或 PDQ 相关的参数。以 MAX_PDQPRIORITY 开头的块。值得仔细阅读有关这些的精美手册，因为它们与其他一些参数之间的相互关系太复杂，无法在此处进行介绍。

但本质上，DS_MAX_QUERIES是任何时候允许的最大并行查询数，并DS_MAX_SCANS决定了扫描表的 IO 线程数。DS_TOTAL_MEMORY确定分配给 PDQ 处理的内存量，手册中有一个算法显示这些变量和用户PDQPRIORITY设置如何结合。

您可能还需要考虑提升RA_PAGES和RA_THRESHOLD值 - 这些确定在抓取下一批之前将多少页作为“块”读入内存。如果您想要支持表扫描（通常您在 DSS 中这样做），那么将这些增加到 256 和 128 可能会提高性能。

我的经验是使用 SMP 和 MPP unix box，而不是 Windows，所以我不确定你能从你的架构中榨取多少，但这是你想要开始的地方。

我建议确定一个运行相当长的时间的良好 DSS 查询，并一次更改一个参数以查看效果。SET EXPLAIN ON是你的朋友，也是。

One last thing - 11.7 supports table compression, and the tests I've seen show dramatic improvements in a DSS environment with large reads and irregular writes.

于 2012-05-07T09:02:00.413 回答