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Operating Systems Solaris How to figure out and solve slow disks? Post 302533298 by stefan a on Thursday 23rd of June 2011 09:02:37 AM
Old 06-23-2011
iostat vs. dtrace

Thanks DukeNuke2,

sorry for being not precise enough:
I have 2 times 2 SAS 146GB, configured as 2 RAID 1

The Volume I'm talking about is only used by the database (MySQL Cluster) and is mounted as:
Code:
/DB on /dev/dsk/c1t2d0s1 read/write/setuid/devices/intr/largefiles/logging/xattr/noatime/onerror=panic/dev=7c0041 on Thu Jun 23 10:57:32 2011

My problem does not seem to be the number of processes, accessing the files (should only be some of the MySQL ndbmtd process) and also not the number of files (<20) on that drive.

The figures themselves are looking very slow.
I don't think, that this box is only capable for 6 Mbyte /s....

Any Idea?

Last edited by fpmurphy; 06-23-2011 at 10:13 AM.. Reason: code tags, spelling
 

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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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