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тАО07-09-2003 06:10 AM
тАО07-09-2003 06:10 AM
Re: memory management + swap + /usr/lib/dld.sl --not enough space
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тАО07-09-2003 06:18 AM
тАО07-09-2003 06:18 AM
Re: memory management + swap + /usr/lib/dld.sl --not enough space
this is my maxdisiz and physical ram is 8gb.
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тАО07-09-2003 06:21 AM
тАО07-09-2003 06:21 AM
Re: memory management + swap + /usr/lib/dld.sl --not enough space
1) yes, you will need to reboot for the priority of swap to change as displayed by swapinfo. This is required because there is no real method to unmount the swap device while it is active. After reboot a new device swap table entry will generated and the new priority schema should be reflected in swapinfo output.
2) The simple answer is, when psuedo-swap is active, the swap algorithm as used by the kernel will 'allocate' from memory first to reduce/eliminate the need for any IO requests. It's easiest to think of psuedo-swap as essentially a counter, nothing more.
If memory consumption does actually require pages be physically paged or processes swapped, this will actually occur on the lowest priority swap device first and psuedo-swap previously 'allocated' to the page/process will be reduced by that approximate amount and the device swap usage will increase accordingly.
Hope this clears up any confusion.
Keith
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тАО07-09-2003 06:35 AM
тАО07-09-2003 06:35 AM
Re: memory management + swap + /usr/lib/dld.sl --not enough space
Did you get a chance to capture the error?. Often these errors could be misleading. Not enough space can also be associated with nfile or nproc/maxuprc kernel limitations. Look at your kernel parameters like nfile, maxuprc and nproc. sar -v can give you info on nfile and nproc. Look at the "ov" parameter. If it is greater than 0, then those parameters did overflew.
The subtle parameter is "maxuprc". This is per user basis. If some users get the errors and other s won't then this could be a culprit. Do a "ps -ef|grep user|grep -v grep|wc -l" and compare it with your maxuprc parameter. If it is close, then there is a good chance you will need to increase it.
-Sri
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тАО07-09-2003 06:54 AM
тАО07-09-2003 06:54 AM
Re: memory management + swap + /usr/lib/dld.sl --not enough space
The value specified for tunable parameter "maxdsiz", "0XFFFFF000", evaluates to "4294963200" which is more than the maximum allowed value of "2063835136".
Now this is not a problem as such. 32bit programs by default cannot address more than 960 megs (or up to about 1750 megs with special compiler options). And with even more restricted options, a 32bit program might get access to a bit under 3Gb.
So you need to identify the program(s) that are getting the out-of-memory error message and see if the problems are due to 32bit limitations. Have your programmers take a look at the Memory Management and Process Management white papers from the HP website (docs.hp.com) to understand the extreme limitations of 32bit programs.
Bill Hassell, sysadmin
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