On Thu, Feb 22, 2007 at 14:21:29 +0200, Sami Farin wrote:
...
> Note that surf() now does 8 loops instead of 16.
> If someone shows it's easy to crack now, tell me.
And when doing for PTR queries n.n.n.10.in-addr.arpa
which all result into NXDOMAIN (queries to localhost):
35,678,022 dns_packet.c:dns_packet_getname
[/usr/local/src/djbdns-1.05-epoll/dnscache]
34,732,154 dns_random.c:dns_random [/usr/local/src/djbdns-1.05-epoll/dnscache]
19,614,387 dns_domain.c:dns_domain_free
[/usr/local/src/djbdns-1.05-epoll/dnscache]
...
So if you feel courageous, modify surf() to do 4 loops :)
But anyways, byte_copy did one-byte-at-a-time for a reason:
85% of accesses were unaligned to 64bit.
This incremental patch to today's other version
does aligned copies only.
http://safari.iki.fi/djbdns/djbdns-1.05-epoll-20070222T114019Z-20070222T160840Z.diff
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