Re: Question about onstat -g iov

Carlos Bolden wrote: > I have a question: > > I was watching system activiy via onstat -g iov and here I s what I was > seeing > [snip] > If you look you can see the msc io thread is wakeing up and doing nothing. > Is it that there is nothing to do or just waking up and not doing anything? > > If either is the case, why does it wake up at all..... > > cbolden@harrahs.com Hmm, I've never actually noticed that but this is what I'd guess is happening. The msc vp is used mainly used when users connect to the system to do password lookups and such. The mechanism it uses is very similiar for when a thread requests I/O to be done (by either the kaio or aio vps). So the total ops is probably the times it has been requested to do things, but since it is doing something different then actual I/O request (like read this page from this chunk) it never gets into code that would update the other fields in whatever structure the onstat -g iov dumps out because they don't make sense in the context of what the msc vp is actually doing. Rest assured if people are connecting to your server then your msc vp is doing something. Jacques -- ******************************************************************** * Jacques P. Renaut "I'd dazzle you with brilliance * * Informix Advanced Support if I only had the knack..." * * email: jrenaut@informix.com #include <disclamier.h> * ********************************************************************