UFS Performance Enhancements/Limitations

UFS Performance Enhancements/Limitations

Post by Darryl Snedek » Sun, 28 Apr 1996 04:00:00



I am currently baffled by an Oracle RDBMS Archive performance
problem/limitation  which is caused by my system configuration.

 I have a Solaris system which regardless of Oracle version (7.1.x,
7.2.x and YES 7.3.2)  produces Archive log files at an exceptionally
slow rate.  This rate is approximately 12-15Mb per minute.  Comparable
non-Sun machines are yielding 35-45Mb per minute.  I have had prior
experiences with SUN Solaris machines which also produced
35-45Mb/minute, but not being a Systems person, I don't recall those
configurations very well.

This impediment is quite substantial when you consider that I wish to
utilize 250Mb Redo log files.

Has anyone had better results utilizing presto-serve, Solaris
Fast-Writes (NVRAM), or most preferably, configured their machine to
perform better than what I'm experiencing ?

Please keep in mind that the Archive log file destination MUST be a
Unix file system...Raw will just not work.  

Any help would be greatly appreciated.

Thanks,

-D

 
 
 

1. UFS Performance Enhancements/Limitations

I am currently baffled by an Oracle RDBMS Archive performance
problem/limitation  which is caused by my system configuration.

 I have a Solaris system which regardless of Oracle version (7.1.x,
7.2.x and YES 7.3.2)  produces Archive log files at an exceptionally
slow rate.  This rate is approximately 12-15Mb per minute.  Comparable
non-Sun machines are yielding 35-45Mb per minute.  I have had prior
experiences with SUN Solaris machines which also produced
35-45Mb/minute, but not being a Systems person, I don't recall those
configurations very well.

This impediment is quite substantial when you consider that I wish to
utilize 250Mb Redo log files.

Has anyone had better results utilizing presto-serve, Solaris
Fast-Writes (NVRAM), or most preferably, configured their machine to
perform better than what I'm experiencing ?

Please keep in mind that the Archive log file destination MUST be a
Unix file system...Raw will just not work.  

Any help would be greatly appreciated.

Thanks,

-D

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