Re: KAIO ands "onstat -g iov" output
DWillems wrote: > > Strange, running 7.31 on a Compaq ds20 (True64 4.0F) I see 5 KIO on a server > with 3 CPU. > (but may be oyu are right, 2 KIO seems never to be used) > Should I lower them 5 -> 3 and how to do that? There was a bug that used to allocate phantom KAIO threads. I think it was based on the number of AIO VPs running, but I never saw more than 2 on DEC. As you say, these phantom threads are identifiable because they do no work. You can only dictate the number of KAIO threads by setting the number of CPU VPs, which as I alluded to earlier, is based on the number of physical CPUs. You will come to learn that Informix bugs linger-longer on DEC. :-( Cheers, -- Mark. +----------------------------------------------------------+-----------+ | Mark D. Stock mailto:mdstock@mydas.freeserve.co.uk |//////// /| | http://www.informix.com http://www.informixhandbook.com |///// / //| | http://www.iiug.org +-----------------------------------+//// / ///| | |This email will self-destruct in |/// / ////| | |10 sec. If you received this email |// / /////| | |in error, sorry about the mess. |/ ////////| +----------------------+-----------------------------------+-----------+
We are running 7.31FC7 on HP-UX 11 with two CPU and I see 4 KAIO and it is strange that only the first and third KAIO vps are running.Is this a bug on HP-UX ,too? In article <923f6e$8h0$1@news.xmission.com>, "Mark D. Stock" <mdstock@mydas.freeserve.co.uk> wrote: > > DWillems wrote: > > > > Strange, running 7.31 on a Compaq ds20 (True64 4.0F) I see 5 KIO on a server > > with 3 CPU. > > (but may be oyu are right, 2 KIO seems never to be used) > > Should I lower them 5 -> 3 and how to do that? > > There was a bug that used to allocate phantom KAIO threads. I think it > was based on the number of AIO VPs running, but I never saw more than 2 > on DEC. As you say, these phantom threads are identifiable because they > do no work. > > You can only dictate the number of KAIO threads by setting the number of > CPU VPs, which as I alluded to earlier, is based on the number of > physical CPUs. > > You will come to learn that Informix bugs linger-longer on DEC. :-( > > Cheers, > -- > Mark. > > +----------------------------------------------------------+---------- -+ > | Mark D. Stock mailto:mdstock@mydas.freeserve.co.uk |//////// /| > | http://www.informix.com http://www.informixhandbook.com |///// / //| > | http://www.iiug.org +----------------------------------- +//// / ///| > | |This email will self-destruct in |/// / ////| > | |10 sec. If you received this email |// / /////| > | |in error, sorry about the mess. |/ ////////| > +----------------------+-----------------------------------+---------- -+ > > Sent via Deja.com http://www.deja.com/