Visit Our UNIX and Linux User Community


Virtual Memory / Swap Area


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Virtual Memory / Swap Area
# 1  
Old 07-05-2001
Virtual Memory / Swap Area

Greetings all,

I am Running SunOS 4.1.4 2 w/ Sparcstation 20. It's got 256 megs of ram, and it appears that there isn't a swap file setup.

When I execute vmstat 5 under the Memory column I am concerened about the following stat

avm
0

I used format to determine how the partitions are layed out and found one on sd0 partition b. I have read that SunOS normally puts the swap area here. But fstab did not have any entries for a swap area. So I added to fstab

/dev/sd0b / swap sw 0 0

the executed swapon -a

No messages but when viewing vmstat I still have avm = 0

Any ideas on how to determine if the swap area is active or defined?

Thanks,

Don



# 2  
Old 07-05-2001
Hi Don,

Have you tried using the mkswap command to ensure that the swap partition has been created.

The following should be all that's required:

mkswap /dev/sd0b

Once that's been done it should be okay to run:

swapoff /dev/sd0b
swapon /dev/sd0b



Andy Hibbins Smilie
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #128
Difficulty: Easy
Generally speaking, most of the software included in a Linux distro is free and open source.
True or False?

10 More Discussions You Might Find Interesting

1. Red Hat

SWAP memory

Admins, How can I configure the server so that it will utilize the swap file as little as possible? Please correct me if I'm wrong, I would say change the value of sysctl - vm.swappiness? And if, how can I keep it permenatly even after rebooting the system? since no related parameters in... (7 Replies)
Discussion started by: leo_ultra_leo
7 Replies

2. Red Hat

Swap memory

Hi team, Is there any ability to force the system to use the swap memory for a specific service? And prevent another service of using the swap memory? Thanks (2 Replies)
Discussion started by: leo_ultra_leo
2 Replies

3. HP-UX

How much Swap memory do i have ?

here is the output of swapinfo command ==> swapinfo Kb Kb Kb PCT START/ Kb TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME dev 8192000 0 8184000 0% 0 - 1 /dev/vg00/swap reserve - 8184000 -8184000 memory ... (5 Replies)
Discussion started by: mohtashims
5 Replies

4. UNIX for Dummies Questions & Answers

swap memory

Hi, I want to see used swap memory I know that for this there is command free -m but this shows Swap: 16383 4529 11854 by top command while load is 1.05 max CPU % 24 mysqld why used swap shows 4529 either it is not flushed there is other command... (2 Replies)
Discussion started by: kaushik02018
2 Replies

5. Solaris

Solaris 10 - Memory / Swap

Hi all Got myself in a pickle here, chasing my own tail and am confused. Im trying to work out memory / swap on my solaris 10 server, that Im using zones on. Server A has 32Gb of raw memory, ZFS across the root /mirror drives. # prtdiag -v | grep mem = Memory size: 32768 Megabytes #... (1 Reply)
Discussion started by: sbk1972
1 Replies

6. UNIX for Dummies Questions & Answers

cpu, memory and virtual memory usage

Hi All, Does anyone know what the best commands in the UNIX command line are for obtaining this info: current CPU usage memory usage virtual memory usage preferably with date and time parameters too? thanks ocelot (4 Replies)
Discussion started by: ocelot
4 Replies

7. AIX

ulimits max locked memory virtual memory

Hi, Would any one be so kind to explain me : are ulimits defined for each user seperately ? When ? Specialy what is the impact of : max locked memory and virtual memory on performance of applications for a user. Many thanks. PS : this is what I can see in MAN : ulimit ] ... (5 Replies)
Discussion started by: big123456
5 Replies

8. Programming

about virtual memory and memory leak

Hi, First of all I appreciate this group very much for its informative discussions and posts. Here is my question. I have one process whose virtual memory size increases linearly from 6MB to 12MB in 20 minutes. Does that mean my process has memory leaks? In what cases does the... (4 Replies)
Discussion started by: shriashishpatil
4 Replies

9. Solaris

swap memory

Hi Can any help me on setting the swap memory ? I would like to set swap memory for installing oracle 9i software. RAM - 512 Mb HDD - 40 Gb OS - Sun Solaris 5.9 (6 Replies)
Discussion started by: sivaramat
6 Replies

10. Filesystems, Disks and Memory

Total Memory/Swap Memory

I need to put a program together to determine the total, available memory and total and available swap on unix machines. I have been searching for weeks and I seem to run into dead ends. Every unix platform I look at has a different way to determine memory info. Any sugggestions or new... (4 Replies)
Discussion started by: ghe1
4 Replies

Featured Tech Videos