在$INFORMIXDIR/etc/onconfig.*文件中修改 NETTYPE
增加buffers和shmvirtsize.
这个时原来代码，能增到多大
# Shared Memory Parameters
LOCKS 2000 # Maximum number of locks
BUFFERS 2000 # Maximum number of shared buffers
NUMAIOVPS # Number of IO vps
PHYSBUFF 32 # Physical log buffer size (Kbytes)
LOGBUFF 32 # Logical log buffer size (Kbytes)
CLEANERS 1 # Number of buffer cleaner processes
SHMBASE 0xC000000L # Shared memory base address
SHMVIRTSIZE 8192 # initial virtual shared memory segment size
SHMADD 8192 # Size of new shared memory segments (Kbytes)
SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited
CKPTINTVL 300 # Check point interval (in sec)
LRUS 8 # Number of LRU queues
LRU_MAX_DIRTY 60 # LRU percent dirty begin cleaning limit
LRU_MIN_DIRTY 50 # LRU percent dirty end cleaning limit
TXTIMEOUT 300 # Transaction timeout (in sec)
STACKSIZE 64 # Stack size (Kbytes)
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