RE: [Fault-injection-developer] Overhead summary.

[Zhuang, L. <lou...@in...>]

I'd like to do the optimization on pf and fi_core.c as soon as Rusty's
reconstruction is completed.

-----Original Message-----
From: Rusty Lynch [mailto:ru...@li...]
Sent: Wednesday, December 18, 2002 12:27 AM
To: Gao, Kevin; fau...@so...; Zhuang, Louis;
Wang, Stanley
Subject: Re: [Fault-injection-developer] Overhead summary.


Wow!  Well, we have to start somewhere.  I suspected this just from my
systems
response time while hacking on a patched box.  It will be very interesting
to see how these numbers improve after a critical eye is taken to pf.
 
    --rusty

----- Original Message ----- 
From: Gao,  <mailto:kev...@in...> Kevin 
To: 'fau...@so...'
<mailto:'fau...@so...'>  ; Zhuang, Louis
<mailto:lou...@in...>  ; Wang,  <mailto:sta...@in...>
Stanley 
Sent: Monday, December 16, 2002 11:05 PM
Subject: [Fault-injection-developer] Overhead summary.

According to the results of performance testing.
We can get some important conlusion.
 
Compare 2.5.51 with our FITH with pure kernel(2.5.51)
The over head is as follow:
 
Mmap Latency            about  17.8%
Prot Fault                     about  63.5%
Page Fault                    about 50%