Yes, it hold up any packet that is less than the size of the header, and
forwards multiple.
- Original Message -
From: Brock Palen [bro...@umich.edu]
Sent: 08/03/2009 08:35 PM AST
To: Mag Gam
Cc: lustre-discuss discuss
Subject: Re: [Lustre-discuss] Lustre featured on podcast (HT: And
its really bizzare because you can read all the manuals in the world
and read all the responses on the mailing list, but 30 mins of a good
developers time is priceless. I never even knew lnet didn't use tcp!
Thats great stuff
On Mon, Aug 3, 2009 at 10:32 PM, Kevin Van Maren wrote:
> Yes, original
Yes, originally designed so multiple send() calls with small data have
a chance to be combined by TCP before being sent over the network --
improve behavior of applications doing small writes.
Setting tcp_nodelay disables Nagle, as the additional latency can hurt
some interactive session per
eitherway, good job on the interview. Andres was a sport. try to
interview more Lustre developers :-)
On Mon, Aug 3, 2009 at 8:35 PM, Brock Palen wrote:
> http://en.wikipedia.org/wiki/Nagle%27s_algorithm
>
> Looks like you intentionally hold up data to try to make fatter payloads in
> packets
http://en.wikipedia.org/wiki/Nagle%27s_algorithm
Looks like you intentionally hold up data to try to make fatter
payloads in packets so they are not 99% header/crc data. Sounds like
a way to make latency bad.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
bro...@umich.edu
(7
Very nice.
15:54, what is "Nagle" ?
He didn't say anything about SNS, but changeLogs seems very promising!
On Mon, Aug 3, 2009 at 8:55 AM, Brock Palen wrote:
> Thanks to Andreas for taking an hour out to talk with Jeff Squyres and
> myself (Brock Palen) about the Lustre cluster filesystem on o
Dear list ,
I am doing pressure test for a new 10-OSS Lustre file system
using 70 client node. (each server has 10Gb Ethernet connection, each client
has 1Gb Ethernet connection, there are 3 OST on 3 RAID6 volulme for one OSS)
Each time, after about 4 hours, clien
Thanks to Andreas for taking an hour out to talk with Jeff Squyres and
myself (Brock Palen) about the Lustre cluster filesystem on our
podcast www.rce-cast.com,
You can find the whole show at:
http://www.rce-cast.com/index.php/Podcast/rce-14-lustre-cluster-filesystem.html
Thanks again!
If any