Re: Onstat -R

rbruenin wrote: > > Can someone explain the onstat -R headings.. Is the percentage free or > used. Been digging thru the texts.. examples but little explanation? Sure. > INFORMIX-OnLine Version 7.24.FC4 -- On-Line -- Up 4 days 17:40:47 -- > 36320 Kbytes > > 8 buffer LRU queue pairs > # f/m length % of pair total > 0 f 98 77.8% 126 > 1 m 28 22.2% Each LRU is actually a pair of queues, one clean buffer (or free) queue and one dirty buffer (or modified) queue. The two lines above report on the first queue pair. Here 77.8% (or 98) of the 126 buffers in this LRU are unmodified since loading or are completely unused and 22.2% (or 28 buffers) are dirty and need to be flushed. [SNIP more of the same] > 239 dirty, 1000 queued, 1000 total, 1024 hash buckets, 2048 buffer size This line, above, reports the totals. You have 1000 buffers configured and 239 are dirty. > start clean at 60% (of pair total) dirty, or 75 buffs dirty, stop at 50% This line reports configuration you have LRU_MAXDIRTY = 60 and LRU_MINDIRTY = 50 which means begin cleaning any single queue that becomes 60% (or 75 buffers) dirty and flush it until it is only 50% dirty. Art S. Kagel