Why using timestamp based RTTM simplifies TCP sender?

Hi everybody! While reading quite old but important RFC 1323 in chapter on RTT measurement based on timestamps I found an opinion that: " A solution to these problems (rough RTT estimation) which actually simplifies the sender substantially, is as follows: using TCP options, the sender places

Marvell 88E8001 on sk0 and RELENG_5_3 - big problems

Hi! Marvell's chip is not in supported nics section of 5_3 release notes, but in man sk is , so I decided to write. I've got some boxes with Marvell Gigabit NICs on-board (Gigabyte and ASUS). Sadly, I can't be happy with it and freebsd 5.3 because of the following two problems: a) sk0 driver

Re: Marvell 88E8001 on sk0 and RELENG_5_3 - big problems

- Original Message - From: "Bjoern A. Zeeb" <[EMAIL PROTECTED]> To: "Heinz Knocke" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Thursday, December 16, 2004 2:45 PM Subject: Re: Marvell 88E8001 on sk0 and RELENG_5_3 - big problems > would y

Speed problem - smbclient doesn't send duplicate ACKs in case of pacekt loss

Hi! I'm not sure if this is an OS or Samba problem, so I send similar questions to both: FreeBSD related list and Samba. I'm trying to tune samba on my two directly linked boxes and encountered a strange problem. When serving one big (1-2GB file) locally over lo0 transmission reaches speed of abo

What will do the TCP stack in the described scenario?

Hi! I'm writing here because I'm solving a strange performance problem ( http://docs.freebsd.org/cgi/getmsg.cgi?fetch=3420+0+current/freebsd-net ) and wonder is this and OS or aplication side's bottleneck. Imagine the situation (S /C - TCP sender / client respectively). S: 0:10 C: ack 10 S: 10:2

Re: What will do the TCP stack in the described scenario?

Hi! I see that I didn't explain everything clearly, and made some mistakes so let me get through it again :)) You're right about the segment numers, but I use the same packet numeration as tcpdump, so the last segment of the previous packet and the first segment of the following one have the same

Re: What will do the TCP stack in the described scenario?

- Original Message - From: "Heinz Knocke" <[EMAIL PROTECTED]> To: "Joshua Blanton" <[EMAIL PROTECTED]> Cc: Sent: Saturday, January 08, 2005 12:56 PM Subject: Re: What will do the TCP stack in the described scenario? > As you can see the reciever

How do turn on TCPDEBUG in CURRENT??

Hi! I asked the same questions once - but no one replied so I try once again - I've experienced problem with TCPDEBUG kernel compilation option - it doesn't work under 5.2 - C even thou the kernel is 200% TCPDEBUG compiled. The system is quite special - is't a small kernel with a little of modu

simulating an LFN over 1Gb LAN Ethernet?

Hi! I'd like to simulate an LFN over LAN - my idea is to install testing software on 2 hosts, traffic between them would be routed by the 3rd one - a FreeBSD based router. To simulate long RTT the router would have to delay packet forwarding in at least one direction - does anyone know how to d

Modern TCP stats

Hi! Thanks in advance for all the support for me you priveded. Now I'm looking for some modern statistics on whats is going now in the global Internet (some main backbones), specially TCP. Special subjects of interests are: - how many packets are being sent per ... - how many of them contain inter