[ILUG] Linux SMP on Xeons

[Brian Scanlan]

On Thu, Jun 15, 2000 at 12:47:18AM +0100, David Murphy wrote:
> If you can't get NVRAM, logging/journalling filesystems will still
> give you a useful write performance boost over standard UFS or ext2fs.
> If you're running Solaris, use the logging UFS supplied by DiskSuite,

Intresting facts.

* Linux performs random seeks twice as fast as Solaris ufs for large files, and
  more than four times as fast for small files. 
                                          
* The behavior of Solaris tmpfs is
  similar to Linux ext2. Although character input and output
  is faster on tmpfs, block input and
  random seeks on the two are the same. Block output is  faster on tmpfs, though the
  difference becomes smaller as file size is increased. 
  
* For block input and output, the two
  are roughly the same for large files (>100 MB), but for
  small files, block output on Linux
  is 6 times as fast as Solaris. 
  
* Solaris ufs outperforms Linux ext2 on character input and output 

This was with Bonnie to test, using Solaris 7 and Linux 2.2 - I didn't know
ext2 kciked bog standard ufs's ass that much. There were (and more are due in
the upcoming update releases) improvements in UFS performance in Solaris 8
though.
These results were without write-caching.

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