Nmap Development mailing list archives
Re: [RFC] Mass rDNS performance tweak
From: David Fifield <david () bamsoftware com>
Date: Thu, 22 Jan 2009 23:19:25 -0700
On Fri, Jan 23, 2009 at 12:05:42AM +0000, jah wrote:
On 22/01/2009 19:01, David Fifield wrote:Likewise, what does this mean? capacity -= (float) drop_ratio More drops means a greater reduction in capacity, everything else being equal. But shouldn't drop ratios (defined as in the patch) of 6 / 5 and 600 / 500 cause different absolute changes in capacity? In the first case it seems we should reduce capacity by about 6; in the second, by about 600. The code in the patch will change it by -1.2 in both cases.Remember also that we get a capacity decrease for each timed-out request so the overall decrease in capacity is much greater after 600 timeouts than after 6.
Ah, you're right of course. And me just having explained how that identical effect affects congestion window growth. David Fifield _______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- [RFC] Mass rDNS performance tweak jah (Jan 14)
- Re: [RFC] Mass rDNS performance tweak doug (Jan 14)
- Re: [RFC] Mass rDNS performance tweak David Fifield (Jan 22)
- Re: [RFC] Mass rDNS performance tweak jah (Jan 22)
- Re: [RFC] Mass rDNS performance tweak David Fifield (Jan 22)
- Re: [RFC] Mass rDNS performance tweak jah (Jan 22)