I think you are probably close. It's probably caching but not data. I'd say it was probably the programs themselves being cached.
Gordon J. Glorfield Sr. Applications Developer MAMSI (A UnitedHealth Company) 301-360-8839 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Stevenson, Charles > Sent: Wednesday, November 10, 2004 2:44 PM > To: [EMAIL PROTECTED] > Subject: [U2] UV slow after reboot > > > For the first day after a reboot, our Universe application > seems to be extraordinarily slow; dramatically slower than > what I've seen on other systems, and maybe worse than how > this system used to be after reboots (subjective assessment). > > For several hours after reboot users weep and gnash their > teeth over the slowness . By the end of a normal workday > things seem to be back to normal. I *think* the performance > improvement is gradual during those first several hours. > > The important thing to note is that there are generally no performance > complaints -- except for after a system reboot. Poor > performance after > reboot is predictable. > > Fortunately, reboots are few and far between. > > Has anyone else seen this sort of thing? I'm fishing for > ideas here. The only thing I can think of has to do with > loading buffer cache. A stable system that has been running > for a while would tend to have that day's current data > cached, eliminating many disk reads that would be needed on a > freshly booted system. But I don't know, it seems quite a > stretch as an entire explanation. > > Some relevant info: > HPUX 11i > UV 10.0.16 > 8GB buffer cache > ~ 300 UV processes > No other application, except services supporting the UV based > ap. ~ 30GB of UV data in active data files. Files are well > sized (thank-you FAST and type 30), although some have huge > data records that have outgrown original design. Typical > application with typical mix of updates / reports. RedBack > used heavily, with slowdown there, too. > > > Again, any suggestions must speak to the difference between > speeds of newly-rebooted vs. a stable system, not just > general performance tuning. > > > Charles Stevenson > ------- > u2-users mailing list > [EMAIL PROTECTED] > To unsubscribe please visit http://listserver.u2ug.org/ > This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately. ------- u2-users mailing list [EMAIL PROTECTED] To unsubscribe please visit http://listserver.u2ug.org/
