Re: KAIO with Solaris 2.6

The releases don't tell me much as it's for Solaris 2.5.1 (Im running 2.6) and just tell me KAIO is supported. I tried to load the module manually (modload /kernel/sys/kaio). The module loaded correctly. I restarted Informix but still no kaio thread. Francois "Art S. Kagel" wrote: > > Actually on Solaris KAIO is enabled by default, most platforms are except > FAIK HPUX. If you do not have the Solaris Kernel Asynchronous I/O modules > installed it will not work and the engine will disable KAIO. Check the > release notes for the required OS options and patches. > > Art S. Kagel > > Francois Baligant wrote: > > > > From what I have understand, KAIO is off by default. > > > > The release note of my Informix (7.30UC5) running > > on a Solaris 2.6 (SunOS 5.6 Generic_105181-11 > > sun4u sparc SUNW,Ultra-250) tells me KAIO is > > supported. I have several raw devices but also > > some cooked files. (raw devices are strips made > > with DiskSuite) > > > > How can i enable KAIO then ? If I do a onstat -g > > ath or onstat -g iov I can see there is no kio > > thread. > > > > I have try to set the KAIOON environment variable > > to 1, but it doesn't change anything. > > > > Any ideas ? > > > > regards, > > Francois

Maybe an onstat -g iov and onstat -g iof can help... bladnoch.root 11 / # onstat -g iov Informix Dynamic Server Version 7.30.UC5 -- On-Line -- Up 15:18:52 -- 1089344 Kbytes AIO I/O vps: class/vp s io/s totalops dskread dskwrite dskcopy wakeups io/wup errors msc 0 i 6.0 332475 0 0 0 327717 1.0 0 aio 0 i 1.8 99610 88509 11079 0 85737 1.2 0 aio 1 i 1.1 61935 51420 10497 0 57713 1.1 0 aio 2 i 0.5 26777 16871 9903 0 17432 1.5 0 aio 3 i 0.3 18058 8549 9506 0 12679 1.4 0 aio 4 i 0.3 15202 6216 8985 0 7871 1.9 0 aio 5 i 0.2 13002 4574 8426 0 6407 2.0 0 aio 6 i 0.2 11024 2896 8127 0 4323 2.6 0 aio 7 i 0.2 10118 2054 8063 0 3196 3.2 0 pio 0 i 0.1 3521 0 3521 0 3522 1.0 0 lio 0 i 1.1 60142 0 60142 0 60142 1.0 0 bladnoch.root 12 / # onstat -g ioq Informix Dynamic Server Version 7.30.UC5 -- On-Line -- Up 15:20:06 -- 1089344 Kbytes AIO I/O queues: q name/id len maxlen totalops dskread dskwrite dskcopy adt 0 0 0 0 0 0 0 msc 0 0 2 332971 0 0 0 aio 0 0 7 70 17 2 0 pio 0 0 1 3528 0 3528 0 lio 0 0 1 60228 0 60228 0 gfd 3 0 32 212081 210456 1625 0 gfd 4 0 2 1134 786 348 0 gfd 5 0 18 22039 8887 13152 0 gfd 6 0 48 542353 507623 34730 0 gfd 7 0 32 40856 40820 36 0 gfd 8 0 4 22 22 0 0 gfd 9 0 1 7 7 0 0 gfd 10 0 32 142345 106314 36031 0 gfd 11 0 1 1114 1114 0 0 gfd 12 0 32 15963 8207 7756 0 Francois Baligant wrote: > > The releases don't tell me much as it's for Solaris 2.5.1 > (Im running 2.6) and just tell me KAIO is supported. I tried > to load the module manually (modload /kernel/sys/kaio). The > module loaded correctly. I restarted Informix but still no > kaio thread. > > Francois > > "Art S. Kagel" wrote: > > > > Actually on Solaris KAIO is enabled by default, most platforms are except > > FAIK HPUX. If you do not have the Solaris Kernel Asynchronous I/O modules > > installed it will not work and the engine will disable KAIO. Check the > > release notes for the required OS options and patches. > > > > Art S. Kagel > > > > Francois Baligant wrote: > > > > > > From what I have understand, KAIO is off by default. > > > > > > The release note of my Informix (7.30UC5) running > > > on a Solaris 2.6 (SunOS 5.6 Generic_105181-11 > > > sun4u sparc SUNW,Ultra-250) tells me KAIO is > > > supported. I have several raw devices but also > > > some cooked files. (raw devices are strips made > > > with DiskSuite) > > > > > > How can i enable KAIO then ? If I do a onstat -g > > > ath or onstat -g iov I can see there is no kio > > > thread. > > > > > > I have try to set the KAIOON environment variable > > > to 1, but it doesn't change anything. > > > > > > Any ideas ? > > > > > > regards, > > > Francois

For other people reading this newsgroup the problem has been found. Im using devices created using Solaris's DiskSuite and used as pathname /dev/md/dsk/ etc... This way you use the BLOCK device which are exploited using COOKED mode. For KAIO to work, you must use real raw devices which are available under /dev/md/rdsk/ Francois Francois Baligant wrote: > > Maybe an onstat -g iov and onstat -g iof can help... > > bladnoch.root 11 / # onstat -g iov > > Informix Dynamic Server Version 7.30.UC5 -- On-Line -- Up 15:18:52 -- > 1089344 Kbytes > > AIO I/O vps: > class/vp s io/s totalops dskread dskwrite dskcopy wakeups io/wup > errors > msc 0 i 6.0 332475 0 0 0 327717 > 1.0 0 > aio 0 i 1.8 99610 88509 11079 0 85737 > 1.2 0 > aio 1 i 1.1 61935 51420 10497 0 57713 > 1.1 0 > aio 2 i 0.5 26777 16871 9903 0 17432 > 1.5 0 > aio 3 i 0.3 18058 8549 9506 0 12679 > 1.4 0 > aio 4 i 0.3 15202 6216 8985 0 7871 > 1.9 0 > aio 5 i 0.2 13002 4574 8426 0 6407 > 2.0 0 > aio 6 i 0.2 11024 2896 8127 0 4323 > 2.6 0 > aio 7 i 0.2 10118 2054 8063 0 3196 > 3.2 0 > pio 0 i 0.1 3521 0 3521 0 3522 > 1.0 0 > lio 0 i 1.1 60142 0 60142 0 60142 > 1.0 0 > > bladnoch.root 12 / # onstat -g ioq > > Informix Dynamic Server Version 7.30.UC5 -- On-Line -- Up 15:20:06 -- > 1089344 Kbytes > > AIO I/O queues: > q name/id len maxlen totalops dskread dskwrite dskcopy > adt 0 0 0 0 0 0 0 > msc 0 0 2 332971 0 0 0 > aio 0 0 7 70 17 2 0 > pio 0 0 1 3528 0 3528 0 > lio 0 0 1 60228 0 60228 0 > gfd 3 0 32 212081 210456 1625 0 > gfd 4 0 2 1134 786 348 0 > gfd 5 0 18 22039 8887 13152 0 > gfd 6 0 48 542353 507623 34730 0 > gfd 7 0 32 40856 40820 36 0 > gfd 8 0 4 22 22 0 0 > gfd 9 0 1 7 7 0 0 > gfd 10 0 32 142345 106314 36031 0 > gfd 11 0 1 1114 1114 0 0 > gfd 12 0 32 15963 8207 7756 0 > > Francois Baligant wrote: > > > > The releases don't tell me much as it's for Solaris 2.5.1 > > (Im running 2.6) and just tell me KAIO is supported. I tried > > to load the module manually (modload /kernel/sys/kaio). The > > module loaded correctly. I restarted Informix but still no > > kaio thread. > > > > Francois > > > > "Art S. Kagel" wrote: > > > > > > Actually on Solaris KAIO is enabled by default, most platforms are except > > > FAIK HPUX. If you do not have the Solaris Kernel Asynchronous I/O modules > > > installed it will not work and the engine will disable KAIO. Check the > > > release notes for the required OS options and patches. > > > > > > Art S. Kagel > > > > > > Francois Baligant wrote: > > > > > > > > From what I have understand, KAIO is off by default. > > > > > > > > The release note of my Informix (7.30UC5) running > > > > on a Solaris 2.6 (SunOS 5.6 Generic_105181-11 > > > > sun4u sparc SUNW,Ultra-250) tells me KAIO is > > > > supported. I have several raw devices but also > > > > some cooked files. (raw devices are strips made > > > > with DiskSuite) > > > > > > > > How can i enable KAIO then ? If I do a onstat -g > > > > ath or onstat -g iov I can see there is no kio > > > > thread. > > > > > > > > I have try to set the KAIOON environment variable > > > > to 1, but it doesn't change anything. > > > > > > > > Any ideas ? > > > > > > > > regards, > > > > Francois