10-26-2010
The display can be confusing
Summing memory size has no sens when it comes to shared memory , (not dedicated to a process)
Last edited by ctsgnb; 10-26-2010 at 08:45 PM..
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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. (6 Replies)
Discussion started by: vibhor_agarwali
6 Replies
2. Post Here to Contact Site Administrators and Moderators
Could RSS-support mod be installed for this forum? (3 Replies)
Discussion started by: eugrus
3 Replies
3. Solaris
I have a question about the accuracy of prstat.
I did a 'prstat -t' and it shows 99% of my memory is occupied by oracle.
NPROC USERNAME SIZE RSS MEMORY TIME CPU
194 oracle 343G 340G 99% 86:17.24 56%
However, 'top' shows I still have 7762meg of memory free.
Memory: 16G real, 7762M... (4 Replies)
Discussion started by: zen03
4 Replies
4. Solaris
hi all,
was trying to figure out how busy my app was by looking at the performance of the app server. did a 'prstat -s rss' command to find the app servers using most memory.
Found a command 'prstat -m' which is meant to show more details on each pid but the output of this command... (1 Reply)
Discussion started by: cesarNZ
1 Replies
5. Solaris
Hi Guys,
I have observed the Oracle (DB USER) is utilizing 100% of the memory in the prstat -a output. I am bit confused is it normal and if not how to bring it down? ABout the machine it is a SunOS 5.10 Generic_125100-10 sun4v sparc SUNW,Sun-Fire-T200.
Please see below output of prstat -a... (12 Replies)
Discussion started by: Asteroid
12 Replies
6. Solaris
Hi Export,
i execute 'top' command to show the free memory in Solaris host, but the read is much lower than the RSS value shown in prstat command. Which one can reflect the real status and it is possible the difference caused by any patch of OS?
Top command (only 883 memory is free)... (3 Replies)
Discussion started by: eiga
3 Replies
7. Solaris
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 ? (0 Replies)
Discussion started by: deivo
0 Replies
8. Solaris
Hi,
someone please explain me what's the difference b/w rss and swap in PRSTAT.
i'm getting output like below,
NPROC USERNAME SWAP RSS MEMORY TIME CPU
70 weblogic 48G 46G 73% 449:17:03 0.4%
swap always remains... (11 Replies)
Discussion started by: sunnys7143
11 Replies
9. Solaris
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 ... (2 Replies)
Discussion started by: amitlib
2 Replies
IPCS(1) BSD General Commands Manual IPCS(1)
NAME
ipcs -- report System V interprocess communication facilities status
SYNOPSIS
ipcs [-abcMmopQqSsTt]
DESCRIPTION
The ipcs utility provides information on System V interprocess communication (IPC) facilities on the system.
The options are as follows:
-a Show the maximum amount of information possible when displaying active semaphores, message queues, and shared memory segments. (This
is shorthand for specifying the -b, -c, -o, -p, and -t options.)
-b Show the maximum allowed sizes for active semaphores, message queues, and shared memory segments. The ``maximum allowed size'' is
the maximum number of bytes in a message on a message queue, the size of a shared memory segment, or the number of semaphores in a
set of semaphores.
-c Show the creator's name and group for active semaphores, message queues, and shared memory segments.
-M Display system information about shared memory.
-m Display information about active shared memory segments.
-o Show outstanding usage for active message queues, and shared memory segments. The ``outstanding usage'' is the number of messages in
a message queue, or the number of processes attached to a shared memory segment.
-p Show the process ID information for active semaphores, message queues, and shared memory segments. The ``process ID information'' is
the last process to send a message to or receive a message from a message queue, the process that created a semaphore, or the last
process to attach or detach a shared memory segment.
-Q Display system information about messages queues.
-q Display information about active message queues.
-S Display system information about semaphores.
-s Display information about active semaphores.
-T Display system information about shared memory, message queues and semaphores.
-t Show access times for active semaphores, message queues, and shared memory segments. The access times is the time of the last con-
trol operation on an IPC object, the last send or receive of a message, the last attach or detach of a shared memory segment, or the
last operation on a semaphore.
If none of the -M, -m, -Q, -q, -S, or -s options are specified, information about all active IPC facilities is listed.
RESTRICTIONS
System data structures may change while ipcs is running; the output of ipcs is not guaranteed to be consistent.
BUGS
This manual page is woefully incomplete, because it does not at all attempt to explain the information printed by ipcs.
SEE ALSO
ipcrm(1)
AUTHORS
Thorsten Lockert <tholo@sigmasoft.com>
BSD
June 18, 1994 BSD