swap Post: 302648331

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1. UNIX for Dummies Questions & Answers

Swap

When i re-updated my system i set my swap at 500 MB. I have 256 in ram and have never even gone into the 250 mb of swap that i had originally configured. How do I reduce the swap?

2. UNIX for Dummies Questions & Answers

About swap

Is it really so that if swap will be located in the begining of hard drive, than it will work faster?

3. Solaris

/tmp as swap

So with solaris 10 are people not using the old /tmp as a regular UFS filesystem and making /tmp part of swap or tmpfs... what are peoples thoughts on this?

4. Solaris

swap -l

When i try to type swap -l ,nothing come out but blinking. May i know what is the problem and solutions ? thanks

5. Solaris

Swap config - Mirror swap or not?

Hello and thanks in advance. I have a Sun box with raid 1 on the O/S disks using solaris svm. I want to unmirror my swap partition, and add the slice on the second disk as an additional swap device. This would give me twice as much swap space. I have been warned not to do this by some...

6. HP-UX

How much Swap is too much?

I have a HP-UX B.11.23 server with 16 gb of memory 84 gb of swap configured. I am being pushed to define more swap to try and get more Tuxedo domains to start. At what point do we have too much swap for the amount of memory? Thanks in advance.

7. Red Hat

swap not defined as swap

free -m : 1023 total swap space created default partition /dev/sdb1 50M using fdisk. i did write the changes. #mkswap /dev/sdb1 #swapon /dev/sdb1 free -m : 1078 total swap space this shows that the swap is on Question : i did not change the type LINUX SWAP (82) in fdisk. so why is...

8. HP-UX

Swap device file and swap sapce

Hi I have an integrity machine rx7620 and rx8640 running hp-ux 11.31. I'm planning to fine tune the system: - I would like to know when does the memory swap space spill over to the device swap space? - And how much % of memory swap utilization should be specified (swap space device...

9. Red Hat

swap

Hi, I have added a new disk to production server. How to make it visible to os and how to configure it. I also want to add some space from that disk to swap space. Please help me out.

10. Solaris

Explain the output of swap -s and swap -l

Hi Solaris Folks :), I need to calculate the swap usage on solaris server, please let me understand the output of below swap -s and swap -l commands. $swap -s total: 1774912k bytes allocated + 240616k reserved = 2015528k used, 14542512k available $swap -l swapfile dev swaplo...

LEARN ABOUT HPUX

nswapfs

nswapfs(5)							File Formats Manual							nswapfs(5)

NAME

       nswapfs - maximum number of file systems that can be enabled for swap

VALUES

   Default
   Allowed values
DESCRIPTION

       File  system  swap  devices  are  managed in a table for easier indexing in the kernel.	sets the kernel variable responsible for the upper
       limit on this table, and thus the upper limit to file systems which can be used for swap.

   Who is Expected to Change This Tunable?
       Anyone.

   Restrictions on Changing
       Changes to this tunable take effect at the next reboot.

   When Should the Value of This Tunable Be Raised?
       If another file system swap is added to the system which would increase the number above then returns to the caller (see the swapon(2) man-
       page).

   What Are the Side Effects of Raising the Value?
       More  file  systems  for swap can be added to the system, and the kernel will need a little more memory for the table.  A small performance
       side effect of the kernel having to scan more file systems to check for a duplicate during swapon is also true, but realistically  negligi-
       ble.

   When Should the Value of This Tunable Be Lowered?
       Only  if  you  are  sure  the system will never go over a certain number of swap file systems, and you wish to lower this tunable to save a
       small amount of kernel memory and kernel performance during swapon operations.

   What Are the Side Effects of Lowering the Value?
       No side effects other than the primary and presumably desired new limitation on the number of swap file systems.

   What Other Tunable Values Should Be Changed at the Same Time?
       None.

WARNINGS

       All HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases	of
       HP-UX.

       Installation  of  optional  kernel  software, from HP or other vendors, may cause changes to tunable parameter values.  After installation,
       some tunable parameters may no longer be at the default or recommended values.  For information about the effects of installation  on  tun-
       able  values,  consult  the documentation for the kernel software being installed.  For information about optional kernel software that was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

							     Tunable Kernel Parameters							nswapfs(5)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Swap

Discussion started by: macdonto

2. UNIX for Dummies Questions & Answers

About swap

Discussion started by: Ty3

3. Solaris

/tmp as swap

Discussion started by: csaunders

4. Solaris

swap -l

Discussion started by: Farbegas