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Full Discussion: Difference in Mem usage ?
Top Forums UNIX for Dummies Questions & Answers Difference in Mem usage ? Post 47978 by shibz on Tuesday 24th of February 2004 03:35:47 AM
Old 02-24-2004
Difference in Mem usage ?

Hi All,

I have a pair of sun ultra 5_10 with SunOS 5.5.1.
Both are almost equally patched and set up with simillar applications.

host# uname -a
SunOS host 5.5.1 Generic_103640-24 sun4u sparc SUNW,Ultra-5_10

Even though both have
same amount of RAM ( 512 Mb ) ,
Swap,
and same set of processes running,

they show different values of free memory in "top". They difference is close to 50 Mb.

I had a look at few processes and compared the rss output in ps, they differ!.

Can anyone tell me why is this ?..

Eg:

host1# ps -ef -orss,vsz,comm | grep init
288 448 /etc/init
1136 1880 /usr/openwin/bin/xinit


host2# ps -ef -orss,vsz,comm | grep init
136 448 /etc/init
1120 1880 /usr/openwin/bin/xinit

The host2 is showing 50~60 Mb as free, where as host1 has only 10~15Mb free.


Thanks in advance..
 

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machid(1)							   User Commands							 machid(1)

NAME
machid, sun, iAPX286, i286, i386, i486, i860, pdp11, sparc, u3b, u3b2, u3b5, u3b15, vax, u370 - get processor type truth value SYNOPSIS
sun iAPX286 i386 pdp11 sparc u3b u3b2 u3b5 u3b15 vax u370 DESCRIPTION
The following commands will return a true value (exit code of 0) if you are using an instruction set that the command name indicates. sun True if you are on a Sun system. iAPX286 True if you are on a computer using an iAPX286 processor. i386 True if you are on a computer using an iAPX386 processor. pdp11 True if you are on a PDP-11/45tm or PDP-11/70tm. sparc True if you are on a computer using a SPARC-family processor. u3b True if you are on a 3B20 computer. u3b2 True if you are on a 3B2 computer. u3b5 True if you are on a 3B5 computer. u3b15 True if you are on a 3B15 computer. vax True if you are on a VAX-11/750tm or VAX-11/780tm. u370 True if you are on an IBM(R) System/370tm computer. The commands that do not apply will return a false (non-zero) value. These commands are often used within makefiles (see make(1S)) and shell scripts (see sh(1)) to increase portability. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
make(1S), sh(1), test(1), true(1), uname(1), attributes(5) NOTES
The machid family of commands is obsolete. Use uname -p and uname -m instead. SunOS 5.11 5 Jul 1990 machid(1)
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