Re: LRU Parameters
Values of:
LRU_MAX_DIRTY 3
LRU_MIN_DIRTY 2
are commonly used for OLTP processing to decrease the length of a
checkpoint. How long are your checkpoints taking? They should be very
short with those values, but your write cache will suffer.
Scott Kolaya
Jo'o Carvalho <joao.s.carvalho@mail.telepac.pt> wrote in article
<6hfc5q$pvs$1@duke.telepac.pt>...
> Hi all !
>
> I've got a doubt and I would like to know if someone can answer it:
>
> In a dual processor IBM 6000 with AIX 4.2.1, 250Mb RAM and
> running Informix 7.24 UC1, I found those values in ONCONFIG:
>
> MULTIPROCESSOR 1
> NUMCPUVPS 1
> SINGLE_CPU_VP 1
> LOCKS 25000
> BUFFERS 20000
> CLEANERS 4
> LRUS 32
> LRU_MAX_DIRTY 3
> LRU_MIN_DIRTY 2>
> If I'm not mistaken the last two values are in percentage and
> if so, aren't they rather odd?.
> These values make sense to anyone?
>
> Any help apreciated in advance!
>
> Jo'o Carvalho
> joao.s.carvalho@mail.telepac.pt
>
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