Your can see "vmstat 1 5" output to determine the system performance.
ZFS will use physical memory as ARC cache unless until it used by application.
When application needs more memory ,ZFS will release the cache automatically.
So you really no need to worry about that.
From the below output,you just need to monitor r,b,w columns and sr column (scan rate).If these values quite more,then your system performance is degraded
Could someone point me in the correct direction or web link containing instructions for installing the System Performance Tool (aka STP) software on an IBM-AIX version 4.? machine. My client has the software (that came from their original server) on a 3" floppy. Thanks! (1 Reply)
I'm running Solaris 8 on a Sun ULTRA 5(SPARC II CPU, 270 MHz) with 64 Mb of RAM.
The machine is very, very slow even doing normal tasks such as reading mail....... I'm nearly afraid to ask it to do some real work.......
On checking out the machine(which I only received last week from our IT... (1 Reply)
I need to prepare script which will run as background process ever 30 mins to collect the following information
1. Memory usage.
2. CPU usage.
3. Number processors running.
4. System resource (CPU and Memory) used by each process.
5. Number of sessions logged
PLEASE HELP ME OUT FROM THIS
... (2 Replies)
Anyone know how to fetch the system performance information by the function except the system command? These information includes CPU load,memory usage,network load,disk capacity,etc. (5 Replies)
I have received an order from upper level manager to "verify system information via Perform/predict'. They asks me to *predict* the system performance. How can I do it as a system admin without the help of application admins and DBAs?
Thanks! (6 Replies)
Dear experts ,
Pls advice for any good Tool to monitor the CPU and performance of AIX the system ..
to keep monitoring to show me the utilization of that system .. (12 Replies)
hi every body i want to check system performance i usually use glance,top,sar and swapinfo but i confused in something so i need explanation about memory issue
first i want check the memory usage i used glance i found this parameter so i need one shows me the differences between these... (2 Replies)
Discussion started by: maxim42
2 Replies
LEARN ABOUT REDHAT
free
FREE(1) Linux User's Manual FREE(1)NAME
free - display information about free and used memory on the system
SYNOPSIS
free [-b|-k|-m|-g] [-l] [-o] [-t] [-s delay ] [-c count ]
DESCRIPTION free(1) displays the total amount of free and used physical memory and swap space in the system, as well as the buffers and cache consumed
by the kernel.
OPTIONS
Normal invocation of free(1) does not require any options. The output, however, can be fine-tuned by specifying one or more of the follow-
ing flags:
-b, --bytes
Display output in bytes.
-k, --kb
Display output in kilobytes (KB). This is the default.
-m, --mb
Display output in megabytes (MB).
-g, --gb
Display output in gigabytes (GB).
-l, --lowhigh
Display detailed information about low vs. high memory usage.
-o, --old
Use old format. Specifically, do not display -/+ buffers/cache.
-t, --total
Display total summary for physical memory + swap space.
-c n, --count=n
Display statistics n times, then exit. Used in conjunction with the -s flag. Default is to display only once, unless -s was speci-
fied, in which case default is to repeat until interrupted.
-s n, --repeat=n
Repeat, pausing every n seconds in-between.
-V, --version
Display version information and exit.
--help Display usage information and exit
FILES
/proc/meminfo -- memory information
SEE ALSO ps(1), top(1), vmstat(1)AUTHORS
Written by Robert Love.
The procps package is maintained by Rik van Riel and Robert Love and was created by Michael Johnson.
Send bug reports to <procps-list@redhat.com>.
Linux 18 Nov 2002 FREE(1)