Prstat rss and swap

10 More Discussions You Might Find Interesting

1. 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...

2. Solaris

RSS of prstat vs RSS of PS

Hi, When I sum the RSS number in the ps command for a specific user and compare it with the RSS values of the prstat command of the same user - there is a big difference. Server details: Solaris 10 5/09 s10s_u7wos_08 SPARC prstat output: NPROC USERNAME SWAP RSS MEMORY TIME ...

3. Solaris

prstat RSS memory

Hi everyone, was hoping someone might be able to help me understand what I am seeing on one of our solaris systems. prstat -s size -a is showing user oradba as being top virtual memory consumption. 639 oradba 3012G 2951G 100% 59:44:01 25% why is it saying 3012G size and 2951G RSS...

4. Solaris

RSS pmap and prstat

Hi, I have some question about memory in Solaris. How it's possible that prstat -a show me that some process using 230M RSS and when I'm using pmap -x show me that this same process using only 90M RSS ?

5. 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...

6. 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...

7. Solaris

prstat O/P

Good Evening everyone, I am confused about prstat O/P as it shows memory values which are different from actual value.Below is the O/P of prstat command and swap commands. NPROC USERNAME SIZE RSS MEMORY TIME CPU 48 root 2113M 1590M 1.2% 45:09.39 32% 31 daemon ...

8. 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...

9. Post Here to Contact Site Administrators and Moderators

Rss

Could RSS-support mod be installed for this forum?

10. UNIX for Dummies Questions & Answers

Help with prstat

Hello, The last line of prstat shows load average. I am unable to figure out what actually it is. I have read the man pages and also googled, all for no use. Can somebody help me, as to what should be the avg. load of the system for best performance and how is this load of prstat calculated.

LEARN ABOUT HPUX

remote_nfs_swap

remote_nfs_swap(5)						File Formats Manual						remote_nfs_swap(5)

NAME

       remote_nfs_swap - enable swapping across NFS

VALUES

   Default
   Allowed values
DESCRIPTION

       This  tunable  controls adding a NFS filesystem for use as swap.  If is set to only local filesystems and devices can be used for swap.	If
       it is set to both local and networked file systems can be used for swap.

       Historically, this tunable was used in NFS clusters that are no longer supported, but this capability has not yet been removed.

   Who Is Expected to Change This Tunable?
       Anyone.

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

   When Should the Tunable Be Turned On?
       Almost never.  As previously mentioned, this tunable was designed for systems which are not in use  today.   Only  systems  with  extremely
       robust NFS capabilities should even consider using NFS for swap.

   What Are the Side Effects of Turning the Tunable On?
       If  the	value  is  set to and a NFS partition is added as swap, then some kernel memory will be set aside for NFS transactions to the swap
       file system.  The kernel will then use the NFS swap partition just the same as a local file system.  If the NFS capabilities of the  system
       are  not  robust,  this	could lead to extremely long swap times (both swap in and swap out), and possibly a loss of memory because all the
       reserved memory and more could be used by NFS (just when memory pressure is high) causing the need for swap.

   When Should the Tunable Be Turned Off?
       Unless you are positive that the NFS system can handle the load of being used as swap, and does not have a local file system or disk  drive
       to spare, this tunable should be set to

   What Are the Side Effects of Turning the Tunable Off?
       Any  previously	defined  NFS  swap  filesystems will no longer be allowed.  Kernel memory will not be reserved for NFS transactions due to
       swap.

   What Other Tunables 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						remote_nfs_swap(5)

Solaris