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Status Not under consideration
Workspace Informix
Components Informix Server
Created by Guest
Created on Sep 19, 2018

change the bufferpool size online

when I add the new dbspace, the page size is 16 k; Informix add a default bufferpool , I forget to create the bufferpool using onparams firstly, later I found it's too small, can't meet the performance requirement, I found I have no method to change it online. if I change onconfig, it need to recycle instance, customer can't accept.
  • Guest
    Reply
    |
    Dec 2, 2020

    You can fix this by changUing the default bufferpool entry in the ONCONFIG file to create new buffer pools as dynamic:

    BUFFERPOOL default,buffers=10000,lrus=16,lru_min_dirty=1,lru_max_dirty=2,extendable=1,max_extends=10,next_buffers=10000,cache_hit_ratio=90

    This will set the automatic new bufferpool creation dynamic adding <next_buffers> up to <max_extents> times whenever the read cache hit ratio is less than <cache_hit_ratio>.