Increase swap memory

Hi guys,
I'm trying to run some strain calculations but my PC keeps running out of memory (first the RAM (4gb) and after that the swap memory (1GB), checked it with free). I know that for these particular calculations <8GB of memory should suffice. Does anybody know how to increase the swap memory from 1GB to 4GB without reinstalling arch linux?
Cheers,
Joris
Last edited by keizer (2010-04-10 23:00:14)

1) replace swap with swapfile
http://wiki.archlinux.org/index.php/Swap
2) set properly swappiness:
vm.swappiness = 100
number corresponds to % of swap than can be used
set
vm.vfs_cache_pressure=500
you can adjust these settings permanently via /etc/sysctl.conf or temporarily:
sysctl -w vm.swappiness="100"
these settings will not affect system performance if RAM memory is not exhausted but will help if swap is needed.

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Hi,
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Message was edited by: noondaywitch

How to Increase the memory size of a File in the Application Server

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Hi,
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DATA : bin_size TYPE i.
SELECT matnr matkl meins
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EXPORTING
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IMPORTING
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TABLES
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CHANGING
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DATA : num TYPE i.
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PC </MEINS>
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JV

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hi freinn,
Welcome to Lenovo Community Forums!
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select * from V$SGAINFO;
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Can I increase heap memory without specify any class or jar file??

Hi,
I tried to increase my heap memory in this way :
java -Xms256m -Xmx256m
but I got an error ... it's seem that I must specify a class java or a .jar file ...
This is the error :
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
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can I increase heap memory without specify any class or jar file??
thx

chiara wrote:
Hi,
I tried to increase my heap memory in this way :
java -Xms256m -Xmx256m
but I got an error ... it's seem that I must specify a class java or a .jar file ...
This is the error :
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
can I increase heap memory without specify any class or jar file??The job of java.exe is to execute java bytecode.
What is it supposed to do with your request to use 256m of memory for heap
when you are not giving it a class or a jar to run?

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We have developed an application using the Hyperion 9.3.1.
We are trying to load data and the data load itself is taking lot of time.
Again, the memory space is getting increased drastically (almost to 100%).
We see lot of page files being generated.
What can be the reason for this sudden increase in memory space utilization.

you should consider the folllowing factors for sudden increase in memory space
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* To start WebLogic Server, use a username and *
* password assigned to an admin-level user. For *
* server administration, use the WebLogic Server *
* console at http:\\hostname:port\console *
starting weblogic with Java version:
java version "1.6.0_17"
Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
Oracle JRockit(R) (build R28.0.0-679-130297-1.6.0_17-20100312-2123-windows-ia32, compiled mode)
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Thanks in advance,
Davinod
Edited by: user13631313 on Jan 10, 2011 10:07 AM

Hi Davinod,
Yes, the correct place is to change the memory arguments in the "setDomainEnv.cmd", however can you confirm if the changed memory arguments were reflected in the logs or not.
If yes then you need to try to increase the memory arguments again and test which is the best working memory argument suitable for your environment, this would take some trials.
However if the memory arguments are still not reflected then try to set it properly as shown below:
set MEM_ARGS=-Xms1024m -Xmx1024m
Regards,
Ravish Mody
http://middlewaremagic.com/weblogic/
Come, Join Us and Experience The Magic…

10.10.1 I use sysctl.conf to increased shared memory. 10.10.1 does not read sysctl.conf anymore

I need to increase shared memory. In 10.10 is use /etc/sysctl.conf with a line kern.sysv.shmmax=16777216 and this works. Also in 10.9. But in 10.10.1 shared memory can no longer be increased from the default 4194304 by this means.
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I have the same problem on my windows 2003 server but the
thing is that I have not been able to get the same error on any
other machine including a windows 2003 I installed on VMWare on the
same machine. I have narrowed down to where in the encoder this
happens. The encoder uses page file backed file maps to register
session information. The call to MapViewOfFileEx method of the
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I do not get that message on any other windows installation even
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Hi,
Version :10.2.0.1 and 11.2.0.1
Os :Aix 5/6
We often getting swap issues.It reached 95%.we have 120GB real memory and 45 GB swap space.The db size is 2.5TB.Some time the db went to hang state and we restarted the db.
DB level
Is it possible to find A QUERY which memory using whether real memory or swap memory?How much amount from it?
OS level
Is it possible to find how much memory A PROCESS using from real memory and swap memory?
Thanks.

922884 wrote:
Hi,
Version :10.2.0.1 and 11.2.0.1
Os :Aix 5/6
We often getting swap issues.It reached 95%.we have 120GB real memory and 45 GB swap space.The db size is 2.5TB.Some time the db went to hang state and we restarted the db.
DB level
Is it possible to find A QUERY which memory using whether real memory or swap memory?How much amount from it?
OS level
Is it possible to find how much memory A PROCESS using from real memory and swap memory?
Thanks.SWAP is an OS operation & Oracle has NO knowledge about it.
OS moves "idle" processes to free up RAM.
do like below & wait for the 1 minute data collection to finish.
post FORMATTED results using tags
[code]
bcm@bcm-laptop:~$ vmstat 6 10
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b   swpd   free   buff cache   si   so    bi    bo   in   cs us sy id wa
0 0     24 41488 124584 2292224    0    0    97    39 398 865 8 3 86 2
0 0     24 37756 124600 2296736    0    0     0    21 794 1825 6 4 89 1
0 0     24 42804 124616 2296752    0    0     0    19 683 1510 3 2 94 1
0 0     24 43060 124624 2296756    0    0     0    18 738 1669 4 2 94 1
0 0     24 43316 124640 2296760    0    0     0    21 732 1641 4 2 93 1
0 0     24 44564 124656 2296768    0    0     0    16 642 1376 3 1 95 1
0 0     24 44564 124684 2296760    0    0     0    63 686 1524 2 2 95 1
0 0     24 39464 124828 2296780    0    0    22    31 695 1536 4 3 93 1
0 0     24 39464 124844 2296796    0    0     0    27 696 1577 4 2 93 1
0 0     24 39340 124860 2296796    0    0     1    26 781 1784 6 3 90 1
[/code]
(si+so) should be less than (bi+bo)
Handle:      922884
Status Level:      Newbie
Registered:      Mar 22, 2012
Total Posts:      44
Total Questions:      22 (16 unresolved)
Why so many unanswered questions?

Increase swap memory

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