RE: onstat -g sch , Busy Waits ?

According to "Informix, DBA Survival Guide" by Joe Lumbley, on page 260, Monitoring Virtual Processors, "When a CPU VP does not have a thread to run, the process performs a 'busywait' . This is a loop of instructions designed to wait a short time". So comparing CPU VP Number 3, to CPU VP Number 1 (semops/busy waits), I would come to the conclusion that CPU VP #3 is doing most of the work. > -----Original Message----- > From: darren_m_rogers@my-dejanews.com > [SMTP:darren_m_rogers@my-dejanews.com] > Sent: Tuesday, January 26, 1999 7:38 AM > To: informix-list@iiug.org > Subject: onstat -g sch , Busy Waits ? > > Hi, > > Could anyone explain what may cause a large number of 'busy waits' ? > > Informix Dynamic Server Version 7.30.UC5 (HPUX-11.00) > > VP Scheduler Statistics: > vp pid class semops busy waits spins/wait > 1 1495 cpu 29 31 967 > 2 1508 adm 0 0 0 > 3 1509 cpu 280334 280893 999 > 4 1510 lio 2 0 0 > 5 1515 pio 2 0 0 > 6 1517 aio 19 0 0 > 7 1522 msc 1287 0 0 > 8 1524 aio 14 0 0 > > > -----------== Posted via Deja News, The Discussion Network ==---------- > http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own >