The max size of BUFFERS in IDS9.40FC7 at Solaris?

BUFFERS 3600000 (pagesize is 2KB,SO is 7.2GB), but user command 'onstat -g seg' ,then class 'R' is only 4GB..Is it system limited 4GB?? From Administrator’s Reference V9.40.. BUFFERS limited is 536,870,912(Solaris)....So I don't know why it is.... IBM Informix Dynamic Server Version 9.40.FC7 -- On-Line -- Up 16 days 02:41:26 -- 22775808 Kbytes Segment Summary: id key addr size ovhd class blkused blkfree 7 1381451777 38a000000 4278190080 549256 R 1044480 0 8 1381451778 489000000 4278190080 131216 V 1044480 0

NETSKY LIAO wrote: > BUFFERS 3600000 (pagesize is 2KB,SO is 7.2GB), but user command 'onstat -g > seg' > ,then class 'R' is only 4GB..Is it system limited 4GB?? >>From Administrator’s Reference V9.40.. BUFFERS limited is > 536,870,912(Solaris)....So I don't know why it is.... > > IBM Informix Dynamic Server Version 9.40.FC7 -- On-Line -- Up 16 days 02:41:26 > -- 22775808 Kbytes> > Segment Summary: > id key addr size ovhd class blkused blkfree > 7 1381451777 38a000000 4278190080 549256 R 1044480 0 > 8 1381451778 489000000 4278190080 131216 V 1044480 0 > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > Max segement size was hard coded to 4GB - if I recall it correctly this got fixed for 64 bit version in some later version (10.00.FC.dont_remember_exact_fixpack ) Your system still uses 7.2 GB BUFFERS , the remainder is spread across virtual segements.

Hi, I'm not sure but I think I read that IDS is limited by SOLARIS 8 about max contigous memory size it can assing to an instance. it is 4G. I show you my instance values (ids 9.40fc9 on SOLARIS 8), if you check it, in spite of I have assigned 8G to my V portion, it divides in two portions. And if you check my kernel parameter I try to assign a shmax fo 8G and it doesn't work. BUFFERS 1000000 # Maximum number of shared buffers SHMVIRTSIZE 8000000 # initial virtual shared memory segment size and my onstat -g output: Segment Summary: id key addr size ovhd class blkused blkfree 4505 1381386241 10a000000 2342518784 494296 R 571850 54 4506 1381386242 195a00000 4278190080 131216 V 932681 111799 4507 1381386243 294a00000 3914334208 120112 V 663 954985 Total: - - 10535043072 - - 1505194 1066838 kernel parameters: set shmsys:shminfo_shmmax=8589934592 set semsys:seminfo_semmap=64 set semsys:seminfo_semmni=4096 set semsys:seminfo_semmns=4096 set semsys:seminfo_semmnu=4096 set semsys:seminfo_semume=64 set semsys:seminfo_semmsl=500 set shmsys:shminfo_shmmin=100 set shmsys:shminfo_shmmni=500 set shmsys:shminfo_shmseg=100

That is means the maxsize of share memory segment is limited to 4GB... OK,Thanks all!