We have a similar issue here. I don't know how the rd and wt figures are calculated, but I have always received results similar to yours. Just to verify, change your loop from 100 to 1000, 5000 and 10000. On our system, we received the following:
100 loops - 60 wt 1000 loops - 600 wt 5000 loops - 3000 wt 10000 loops - 6000 wt If you change the interval on the udstat command to 10 seconds, the wt results changed to: 100 loops - 30 wt 1000 loops - 300 wt 5000 loops - 2000 wt 10000 loops - 3000 wt Clearly, there is a calculation involved in the wt numbers, I just don't know what the calculation is. We have been using udstat for a while, to help locate users that are not doing anything. So, in that respect, it is accurate.. That is, if you see a bunch of zeros, the user is not currently doing anything. Charlie Rubeor Unix/Database Admin The Wiremold Company 800.338.1315 x3498 860.523.3690 fax [EMAIL PROTECTED] wrote on 06/09/2005 04:09:16 AM: > > > While delivering a Unidata System Administration course today > > > I noticed an interesting "feature" of udstat. I had a simple program the > > > contained a loop that performed one read and one write. The loop was > > traversed > > > 100 times. > > > udstat reported this as 200 reads and 600 writes. I ran this > > > several times to verify my findings. > > > > > > Something doesn't add up. Has anyone else seen this? How > > > reliable are these figures? > > > > Were there any indexes on the file? > > This was a tiny static hashed file with no indices set up specifically to > get some numbers into the udstat display. If I had been running anything > real, I would not have noticed the discrepency. > > Maybe you'd like to try it... Create a tiny file, put in a few records (or > even just one) and then run a program that loops around a known number of > times reading and rewriting each record. If your figures look fine, there is > something very odd going on with our server. > > > Martin Phillips > Ladybridge Systems > 17b Coldstream Lane, Hardingstone, Northampton NN4 6DB > +44-(0)1604-709200 > ------- > u2-users mailing list > u2-users@listserver.u2ug.org > To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
