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Full Discussion: Dual CPU's and 'top'
Top Forums UNIX for Dummies Questions & Answers Dual CPU's and 'top' Post 38298 by hcclnoodles on Friday 11th of July 2003 06:56:40 AM
Old 07-11-2003
Dual CPU's and 'top'
Hi have just built a new sunfire 280r with solaris 9 and i Have 2 questions

1) where can i view some information that will tell me for definate that the 2*900 mhz processors are both being used, i tried using "top" but it doesnt tell me for sure that both processors are churning away together

2) Our company uses SAS which is like a statistics number crunching app, when the SAS guys run a job, It is supposed to utilise the wonderful new dual 900mhz processors, but when i open "top" the SAS processes are using under 5% (if im lucky !). The interesting thing is that along the top of the "top" screen it says

CPU States -5% idle- 1% user - 3% Kernel- 95% iowait - 0% swap

can anybody tell me why iowait is at 95% and what the hell does it mean anyway !!!? . This box is running nothing but SAS and O/S associated processes, and the data it is sourcing is on the same box, so there are no NFS data access issues So why are my processes using hardly any CPU ?

any help on this would be greatly appreciated
 

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LEARN ABOUT CENTOS

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)
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