Re: How do I .... ?

Anjan Chakraborty (1689@MN.LAWSON.lawson.com) wrote: : I am getting very high chunk writes and almost 0 LRU writes against onstat : -F : and : high duration against onstat -m. : How do I solve this problem ? : I have CKPTINTVAL=300,NUMAIOVPS=20,CLEANERS=6,LRU_MAX_WRITE=20, : LRU_MIN_WRITE=10,LRUS=8,BUFFERS=60000,PHYSFILE=60000, : MULTIPROCESSOR=1,NUMCPUVPS=1,SINGLE_CPU_VP=0,RESIDENT=1 : 36 Logical log files,LOGSIZE=4000, information in 6 disks and HP-UX 10 with : 512 M memory/2 processors and running ontape -c. Assuming you meant LRU_MAX_DIRTY and LRU_MIN_DIRTY (and they didn't change the names of the params when I wasn't watching), lower those two. Possibly 10 and 5, or 5 and 3, or ... With your current config, LRU writes won't kick in until ~12000 buffers are dirty, so at checkpoint time, you could have 12000 dirty buffers to write out. The lower your LRU_MAX/MIN_DIRTY are, the less buffers you will have to write out at checkpoint time. June ---- June Tong Informix Software ---- ---- Senior Consultant (415) 926-6140 ---- ---- International Support junet@informix.com ---- ---- Location-du-jour: Menlo Park ----