I have a web server (dictzone.com - Linode 360).
The traffic is: 50-100 000 requests / day.
The avarage is: 48 Kbit/s
I'm use 5% of monthly transfer limit.

Yesterday I would like to download, some backup data. But every time the connection was dropped (e.g. 3MByte of data transfer).
I see the followings:
My max download speed was: 256-300 KByte /s
On linode dasboard: The max. transfer rate was: 182 Kb/s

Can any people can suggest some settings, to improve network performance?
Or upgrade to next level solve this problem?

Not sure that it's a limitation on Linode's side. I think they just raised the outbound limit from 30MBps to 50MBps. I have transferred large files at > 256-300Kbps.

_________________
http://ultramookie.com/

I have transferred files out at over 2.5 Meg/Sec.

I also have similiar results with eld101. With segmented downloads I can easily go up to 2.5 MB/s.

Indeeed, depending on the protocol, I can get upto 3 MB/s

I can pretty much max out my FIOS 20mbit/s download speed, serving data from my linode (serving a 50Mbyte file from a http session peaks and holds consistent at around 18.72bit/s)

_________________
Rgds
Stephen
(Linux user since kernel version 0.11)

18.72 bits per second is on the order of TCP/IP Over Carrier Pigeon, and yes it is an official internet standard:

http://www.rfc-editor.org/rfc/rfc1149.txt

There are several advantages to "Transmission of IP Datagrams on Avian Carriers", for example - as noted in the RFC - low altitude service. Here are photographs of the first pings:

http://www.blug.linux.no/rfc1149/vegard ... index.html

and a photo of *the* very first data packet in transmission:

http://www.blug.linux.no/rfc1149/vegard ... g.jpg.html

James

Someone stole my "M". That's my story and I'm sticking to it

(fully aware of the avian packet protocol...)

_________________
Rgds

Stephen

(Linux user since kernel version 0.11)

If I download a single file, it is very fast.
If I have concurrent requests the max. are 90Kb / s. (HTTP connections)

I have following settings in /etc/sysctl.conf (working well on normal servers):

vm.swappiness=25

net.core.rmem_default = 256960
net.core.rmem_max = 256960
net.core.wmem_default = 256960
net.core.wmem_max = 256960

#net.ipv4.tcp_timestamps = 0
#net.ipv4.tcp_sack =1
#net.ipv4.tcp_window_scaling = 1

net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_tw_recycle=1
net.ipv4.tcp_keepalive_time=1000
net.ipv4.tcp_max_syn_backlog=4096
net.ipv4.tcp_fin_timeout=15
#net.ipv4.tcp_max_tw_buckets=65536