From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] fossil+venti performance question
Date: Sat, 9 May 2015 07:43:37 -0700 [thread overview]
Message-ID: <d8c856bd38337194fedaf11b556e7f03@brasstown.quanstro.net> (raw)
In-Reply-To: <20150508211922.1118FB82A@mail.bitblocks.com>
> Looking at the first few bytes in each dir of the initial TCP
> handshake (with tcpdump) I see:
>
> 0x0000: 4500 0030 24da 0000 <= from plan9 to freebsd
>
> 0x0000: 4500 0030 d249 4000 <= from freebsd to plan9
>
> Looks like FreeBSD always sets the DF (don't fragment) bit
> (0x40 in byte 6), while plan9 doesn't (byte 6 is 0x00).
>
> May be plan9 should set the DF (don't fragment) bit in the IP
> header and try to do path MTU discovery? Either by default or
> under some ctl option.
easy enough until one encounters devices that don't send icmp
responses because it's not implemented, or somehow considered
"secure" that way.
- erik
next prev parent reply other threads:[~2015-05-09 14:43 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-04 9:32 KADOTA Kyohei
2015-05-04 16:10 ` Anthony Sorace
2015-05-04 18:11 ` Aram Hăvărneanu
2015-05-04 18:51 ` David du Colombier
2015-05-05 14:29 ` Sergey Zhilkin
2015-05-05 15:05 ` Charles Forsyth
2015-05-05 15:38 ` David du Colombier
2015-05-05 22:23 ` Charles Forsyth
2015-05-05 22:29 ` cinap_lenrek
2015-05-05 22:33 ` David du Colombier
2015-05-05 22:53 ` Aram Hăvărneanu
2015-05-06 20:55 ` David du Colombier
2015-05-06 21:17 ` Charles Forsyth
2015-05-06 21:26 ` David du Colombier
2015-05-06 21:28 ` David du Colombier
2015-05-06 22:28 ` Charles Forsyth
2015-05-07 3:35 ` erik quanstrom
2015-05-07 6:15 ` David du Colombier
2015-05-07 13:17 ` erik quanstrom
2015-05-08 16:13 ` David du Colombier
2015-05-08 16:39 ` Charles Forsyth
2015-05-08 17:16 ` David du Colombier
2015-05-08 19:24 ` David du Colombier
2015-05-08 20:03 ` Steve Simon
2015-05-08 21:19 ` Bakul Shah
2015-05-09 14:43 ` erik quanstrom [this message]
2015-05-09 17:25 ` Lyndon Nerenberg
2015-05-09 17:30 ` Devon H. O'Dell
2015-05-09 17:35 ` Lyndon Nerenberg
2015-05-09 21:54 ` Devon H. O'Dell
2015-05-09 18:20 ` Bakul Shah
2015-05-09 3:11 ` cinap_lenrek
2015-05-09 5:59 ` lucio
2015-05-09 16:26 ` cinap_lenrek
2015-05-09 16:23 ` erik quanstrom
2015-05-10 4:55 ` erik quanstrom
2015-05-10 5:07 ` erik quanstrom
2015-05-10 17:57 ` David du Colombier
2015-05-10 20:18 ` erik quanstrom
2015-05-10 20:19 ` cinap_lenrek
2015-05-10 20:51 ` erik quanstrom
2015-05-10 21:34 ` cinap_lenrek
2015-05-11 1:23 ` erik quanstrom
2015-05-09 16:59 ` erik quanstrom
2015-05-06 22:35 ` Steven Stallion
2015-05-06 23:47 ` Charles Forsyth
2015-05-07 3:38 ` erik quanstrom
2015-05-07 3:43 ` erik quanstrom
2015-05-05 15:07 ` KADOTA Kyohei
2015-05-05 14:47 ` KADOTA Kyohei
2015-05-05 15:46 ` steve
2015-05-05 15:54 ` David du Colombier
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