Kernel I/O on AIX 4.3.x

Hi, I'm running several Informix-Servers on AIX 4.2.1 (Informix 7.30 UC 3) with activated Kernel IO. But when running on AIX 4.3.x I can't see no kio-VP's when I invoke onstat -q ioq or onstat -g glo. I think I configured KIOcorrectly; in fact I've done the same steps like in AIX 4.2.1 (using SMIT/devices/AIO /...). What's different with 4.3 ?? Is there another way to check, if Informix is using kernel IO. Any suggestions ? Thanks is advance J. Redemann

You should see them with the onstat -g ioq. I'm also on AIX 4.3 and Informix 7.3 and this is the results of my onstat: court2 # onstat -g ioq Informix Dynamic Server Version 7.30.UC7 -- On-Line -- Up 2 days 21:44:03 -- 292992 Kbytes AIO I/O queues: q name/id len maxlen totalops dskread dskwrite dskcopy kio 0 0 0 0 0 0 0 kio 1 0 32 106130 35500 70630 0 kio 2 0 0 0 0 0 0 kio 3 0 32 124230 61232 62998 0 kio 4 0 0 0 0 0 0 kio 5 0 0 0 0 0 0 kio 6 0 32 2941 1621 1320 0 kio 7 0 32 10835 3341 7494 0 kio 8 0 32 37660 11502 26158 0 kio 9 0 32 3548 1610 1938 0 kio 10 0 32 4977 1897 3080 0 adt 0 0 0 0 0 0 0 msc 0 0 1 4391 0 0 0 aio 0 0 0 0 0 0 0 pio 0 0 0 0 0 0 0 lio 0 0 0 0 0 0 0 gfd 3 0 0 0 0 0 0 gfd 4 0 0 0 0 0 0 gfd 5 0 0 0 0 0 0 ------------------------------- Check to make sure you pointed your chunk path's at the "raw" side of your disk definitions. I made that mistake when I did a quick "cut and paste" from some scripts and Informix "knows" and didn't use KIO. BTW - performance stunk on that system too!

Did you check to see if it is actually configured. do an lsattr -E -l aio0 to verify that the aio subsystem has been configured/ Are you using logical volumes, if so make sure that you are using raw logical volumes. Have you rebooted the system, if so make sure that in the attributes it reads to configure the AIO subsystem when it comes back up. Crappy performance, eh? We have an an s/80 with 8 gig of ram and 6 processors at 440mhz. There is a storage shark disk array attached to it with 3 gig of cache and 1.68 terabytes of disk. The shark is shared with another system, equal in size and performance. We are getting damn good performance from this system , give it that we are coming off of a crippled 5100s with 4 gig of ram........ But loading and indexing data, we are getting some fine performance there, although another book of processors, and some more IO cards will speed this up even more..... Let me know, Carlos Bolden DBA, Harrahs Entertainment..... J'rg Redemann <bundy00@t-online.de> wrote in message news:8enfd7$5ko$1@news08.btx.dtag.de... > Hi, > I'm running several Informix-Servers on AIX 4.2.1 (Informix 7.30 UC 3) with > activated Kernel IO. But when > running on AIX 4.3.x I can't see no kio-VP's when I invoke onstat -q ioq or > onstat -g glo. I think I configured KIO> correctly; in fact I've done the same steps like in AIX 4.2.1 (using > SMIT/devices/AIO /...). What's different with 4.3 ?? > Is there another way to check, if Informix is using kernel IO. Any > suggestions ? > Thanks is advance > > J. Redemann > >