Subj : Re: Measuring tranfer performance of controller card
To   : alt.comp.linux,alt.comp.os.linux,comp.os.linux
From : johhny
Date : Thu Dec 16 2004 07:58 pm

there are several tools that are around that you can use to find out the 
performance. In some versions of open ssl you can use

time openssl rand size_in_bits -out file.name

Using that can tell you at least some of the indication of what your 
disk performance is like

As with all benchmarking it really depends on what type of use your 
system is going to be using as to if the benchmarks are going to be 
real. For example if you where doing cache serving the benchmark would 
be different to an ISO FTP site.

http://forum.lucidnow.com


news.tele.dk wrote:
> Hi,
> 
> How do I measure the tranfer performance of a harddisk controller card ?
> 
> More specific how do bypass the caching.
> 
> When doing dd if=/dev/sda of=/dev/null .... and hdparm -tT test's it seems 
> that I hit the kernels caching mechanisms.
> 
> best regards
> Carsten 
> 
>

.