Informix Perf Question

I have setup an informix database on a Sparc10. 5.00.UC3. The configuration is generally the same as other servers I have but it runs different applications. I have noticed that this server generally has 0% - 30% cache reads and 80% - 95% cache writes. On the other servers the cache read and write range from the high 80% to 90+%. Is it possible that the applicationbs software is negatively impacting the cache %?? The database is spread across 5 disks over two controllers. It is mirrored and has buffered logging. The configuration is listed below. Any ideas would be greatly appreciated. Wayne #************************************************************************** # # INFORMIX SOFTWARE, INC. # # Title: tbconfig.std # Sccsid: @(#)tbconfig.std 8.8 9/26/91 14:16:33 # Description: INFORMIX-OnLine Configuration Parameters # #************************************************************************** # Root Dbspace Configuration ROOTNAME rootdbs # Root dbspace nameROOTPATH /dev/online_root # Path for device containing root dbspace ROOTOFFSET 0 # Offset of root dbspace into device ROOTSIZE 394800 # Size of root dbspace (Kbytes) # Disk Mirroring Configuration MIRROR 1 # Mirroring flag (Yes = 1, No = 0) MIRRORPATH /dev/online_root_m MIRROROFFSET 0 # Offset into mirror device (Kbytes) # Physical Log Configuration PHYSDBS rootdbs # Name of dbspace that contains PHYSFILE 100000 # Physical log file size (Kbytes) # Logical Log Configuration LOGFILES 26 # Number of logical log files LOGSIZE 6000 # Size of each logical log file (Kbytes) # Message Files MSGPATH /usr/local/informix/online.log # OnLine message CONSOLE /dev/console # System console message pathname # Archive Tape Device TAPEDEV /dev/rst24 # Archive tape device pathname TAPEBLK 126 # Archive tape block size (Kbytes) TAPESIZE 5000000 # Max amount of data to put on # Logical Log Backup Tape Device LTAPEDEV /dev/rst24 # Logical log tape device pathname LTAPEBLK 126 # Logical log tape block size LTAPESIZE 5000000 # Max amount of data to put # Identification Parameters SERVERNUM 0 # Unique id associated with DBSERVERNAME db1 # Unique name of this OnLine # Shared Memory Parameters RESIDENT 0 # Forced residency flagUSERS 250 # Maximum number of concurrent user TRANSACTIONS 500 # Maximum number of concurrent LOCKS 200000 # Maximum number of locks BUFFERS 12000 # Maximum number of shared memory buffersTBLSPACES 5000 # Maximum number of active tblspaces CHUNKS 16 # Maximum number of chunks DBSPACES 16 # Maximum number of dbspaces and blobspaces PHYSBUFF 64 # Size of physical log buffers (Kbytes) LOGBUFF 64 # Size of logical log buffers (Kbytes)LOGSMAX 60 # Maximum number of logical log files CLEANERS 5 # Number of page-cleaner processes SHMBASE 0x10000000 # Shared memory base address CKPTINTVL 1800 # Checkpoint interval (in seconds) LRUS 8 # Number of LRU queues LRU_MAX_DIRTY 10 # LRU modified begin-cleaning limit LRU_MIN_DIRTY 5 # LRU modified end-cleaning limit LTXHWM 70 # Long TX high-water mark (percent) LTXEHWM 80 # Long TX exclusive high-water mark # Machine- and Product-Specific Parameters DYNSHMSZ 0 # Dynamic shared memory size (Kbytes) GTRID_CMP_SZ 32 # Number of bytes to use in GTRID comparision DEADLOCK_TIMEOUT 60 # Max time to wait for lock in TXTIMEOUT 300 # Transaction timeout for I-STARSPINCNT 0 # No. of times process tries for latch STAGEBLOB # Reserved for INFORMIX-OnLine/Optical # System Page Size BUFFSIZE 2048 # Page size (do not change!)