Hi
Thanks for the reply.
After changing from thread to kernel - we managed 3 days without needing to bounce - but then we found the same problem - so its not only down to threading mode.
We've now dropped the number of engines and we're running at very low utilisation in the hope we don't need to bounce very often.
We're going to try SP132 to see if that fixes it and if not then we'll look at downgrading to 15.5.
With regard to this ..
> especially the disk task - was getting clipped by the OS.You may think that is weak,
> but we had a huge issue with Solaris customers moving to the threaded kernel due to an OS
> bug that prevented process threads from doing kernel async IO.
Don't think its weak - I spent many years as a low-level C coder. Trying to get this code running across different flavours of Unix wasn't easy in my day.
> What is your OS release??
We're running Red Hat Enterprise Linux Server release 6.4 kernel 2.6.32-431.17.1.el6.x86_64.
Mike