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тАО09-20-2010 10:36 PM
тАО09-20-2010 10:36 PM
shmmax limitation
I have the OS version 11.31.
I only need to Know, the recommended value for the shmmax parameter is 0x40000000000.
Also some time, on application level trace I get the error message like
shmget() of 17179869184 bytes failed. errno = 12(Not enough space)
Can I set it with the 8 GB RAM and 20 GB SWAP?
I only need to Know, the recommended value for the shmmax parameter is 0x40000000000.
Also some time, on application level trace I get the error message like
shmget() of 17179869184 bytes failed. errno = 12(Not enough space)
Can I set it with the 8 GB RAM and 20 GB SWAP?
2 REPLIES 2
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тАО09-20-2010 11:33 PM
тАО09-20-2010 11:33 PM
Re: shmmax limitation
This hex value is way too big, two extra zeros?
Your colleague's thread?
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1448163
While you can get 17 Gb, only if you have enough swap configured. What is "swapinfo -tam" when it fails?
Your colleague's thread?
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1448163
While you can get 17 Gb, only if you have enough swap configured. What is "swapinfo -tam" when it fails?
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тАО09-21-2010 01:38 AM
тАО09-21-2010 01:38 AM
Re: shmmax limitation
For database servers, ideal shmmax value is equal to physical memory.
find out the physical memory.
#dmesg |grep -i phy
or glance
calculate shmmax in bytes.
phy mem * 1024 *1024
tune the parameter.
#kctune shmmax=value
find out the physical memory.
#dmesg |grep -i phy
or glance
calculate shmmax in bytes.
phy mem * 1024 *1024
tune the parameter.
#kctune shmmax=value
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