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Special Forums Hardware Filesystems, Disks and Memory Intermittent "slowdowns" on Solaris 2.6 Post 26153 by fiam on Monday 12th of August 2002 09:04:10 PM
Old 08-12-2002
Question Intermittent "slowdowns" on Solaris 2.6

We have a Sun Enterprise 450 running Solaris 2.6 that is giving us intermittent performance issues. These problems happen several times a day, usually lasting for a few minutes each time. sar shows that when this occurs, CPU idle time is 0% or close to it, and sys and wio are both high. iostat shows 100% disk busy during these "slowdowns", but it also shows a drop in writes during this time (reads stay about the same). My question is, what is the disk doing to make it 100% busy, if the writes are actually less and reads about the same? I suspect some sort of hardware problem, but Sun have investigated this for us and do not believe it's a hardware fault.

Any ideas?

Thanks

Sean
 

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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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