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caker
Joined: 15 Apr 2003
Posts: 2387
Location: Galloway, NJ
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| Posted: Fri Mar 02, 2007 2:58 pm Post subject: Download File Speed Test |
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Here's the same file (91M, quicktime compressed .mov) served in different locations:
1) http://host76.fremont.linode.com/Tailing-Aaron.mov
2) http://www.theshore.net/moto/20060825_Stecoah/Tailing-Aaron.mov (Dallas, served by a Linode)
3) http://host77.atlanta.linode.com/Tailing-Aaron.mov
4) http://newark1.linode.com/Tailing-Aaron.mov
I, for one, can max out my cable modem from Nashville (about 800k sec on a good day).
-Chris |
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tofu
Joined: 01 Jul 2006
Posts: 29
Location: Ghent, Belgium
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| Posted: Fri Mar 02, 2007 5:22 pm Post subject: |
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| thx! |
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cirric
Joined: 18 Apr 2006
Posts: 10
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| Posted: Sat Mar 03, 2007 12:40 pm Post subject: Re: Download File Speed Test |
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caker wrote: I, for one, can max out my cable modem from Nashville (about 800k sec on a good day).
I have 15 megabit (downstream) Verizon FIOS, in the Dallas area.
My download speeds for the test files:
Fremont: 1680 Kbytes/sec
Dallas: 1890 Kbytes/sec
Atlanta: 1140 Kbytes/sec
However, I actually have lower ping times to the Atlanta host, compared to the Dallas host. A few weeks ago, I noticed that the hop from alter.net in DFW to theplanet's alter.net gateway (also in DFW) added 35 ms. I think something is messed up in the routing: you can practically go all the way to Chicago and back in that time. But, I don't know who to report it to.... |
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c1i77
Joined: 23 Sep 2004
Posts: 70
Location: Delft, Netherlands
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| Posted: Sun Mar 04, 2007 2:20 am Post subject: |
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Here's two sets of results.
I tested these sets twice, on Saturday March 3rd and Sunday March 4th 2007 at between 07:00 and 09:00 UTC and got very similar results.
Numbers are ping time; max rate; avg rate.
Download to Orange 20Mbit/sec ADSL line in The Netherlands (NL)
Linode.com/Dallas ... 129ms; 1.6Mbyte/sec; 1.09Mbyte/sec
Linode.com/Fremont ... 177ms; 620Kb/sec; 502Kbyte/sec
Linode.com/Atlanta ... 133ms; 497Kb/sec; 485Kbyte/sec
Internap/Atlanta ... 120ms; 575Kbyte/sec; 552Kbyte/sec
MyLinode/Atlanta ... 133ms; 255Kbyte/sec; 250Kbyte/sec
Download to MyLinode/Atlanta
Internap/Atlanta ... 16ms; 1.12Mbyte/sec; 1.11Mbyte/sec
Linode/Atlanta ... 0.6ms; 1.08Mbyte/sec; 1.02Mbyte/sec
Notes:
Internap = ftp-mirror.internap.com (41M file)
MyLinode = My Atlanta-based Linode on host77, on the same host machine as the Atlanta download test.
Summary:
Highest transfer rate on MyLinode is 1.12Mbyte/sec when downloading from a nearby Debian mirror.
Linode/Dallas provides the highest download rate to AMSIX (Amsterdam); Linode/Atlanta the most consistent.
When downloading from MyLinode to NL, the max rate is only half that of the host. Is this true for all Linodes?
In download tests from previous MyLinode/Fremont (host19), the max rate was always ~200Kbyte/sec. [Feb 2007]
Cliff |
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OverlordQ
Joined: 04 Jun 2004
Posts: 200
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| Posted: Sun Mar 11, 2007 2:42 am Post subject: |
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Quote: mylinode:/home/ovrlrdq# wget http://cachefly.cachefly.net/10mb.test
--01:40:41-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 (10M) [application/octet-stream]
100%[=======================================================================>] 10,485,760 3.41M/s
01:40:45 (3.40 MB/s) - `10mb.test' saved [10485760/10485760]
'Nuff said. |
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c1i77
Joined: 23 Sep 2004
Posts: 70
Location: Delft, Netherlands
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| Posted: Sun Mar 11, 2007 4:23 am Post subject: |
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OverlordQ wrote:
'Nuff said.
Not really.
I guess though your Linode is at Dallas DC, simply because downloads to Linode at Atlanta (and Fremont, in my experience) never reach that rate.
Here's your test repeated from Atlanta (host77):
Code:
linode-atlanta$ wget http://cachefly.cachefly.net/10mb.test
--09:15:53-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 (10M) [application/octet-stream]
100%[==========================================================>] 10,485,760 1.08M/s ETA 00:00
09:16:02 (1.07 MB/s) - `10mb.test' saved [10485760/10485760]
This fits with tests I ran last week (above).
Cliff |
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pclissold
Joined: 24 Oct 2003
Posts: 471
Location: Netherlands
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| Posted: Sun Mar 11, 2007 12:23 pm Post subject: |
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From my Linode in Fremont - which is on host56, the Xen beta machine: Code: peter@fremont ~ $ wget http://cachefly.cachefly.net/10mb.test
--18:21:16-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 (10M) [application/octet-stream]
100%[====================================>] 10,485,760 10.61M/s
18:21:17 (10.61 MB/s) - `10mb.test' saved [10485760/10485760]
peter@fremont ~ $ |
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NeonNero
Joined: 04 Jan 2005
Posts: 118
Location: Ålesund, Norway
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| Posted: Sun Mar 11, 2007 1:40 pm Post subject: |
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Both of my Linodes are at the Dallas DC, and here are my results:
Linode 128 (will become Linode 256 when the upgrades come to Dallas) on host37:
Code: kimandre@edison ~ $ wget http://cachefly.cachefly.net/10mb.test
--14:33:10-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 (10M) [application/octet-stream]
100%[================================================================================>] 10,485,760 2.10M/s ETA 00:00
14:33:15 (1.97 MB/s) - `10mb.test' saved [10485760/10485760]
And Linode 256 (will become Linode 512 when the new upgrades arrive) on host43:
Code: kimandre@newton:~$ wget http://cachefly.cachefly.net/10mb.test
--14:32:23-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net[205.234.175.175]:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 [application/octet-stream]
100%[================================================================================>] 10,485,760 2.08M/s ETA 00:00
14:32:28 (1.93 MB/s) - `10mb.test' saved [10485760/10485760] |
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OverlordQ
Joined: 04 Jun 2004
Posts: 200
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| Posted: Thu Mar 15, 2007 1:55 am Post subject: |
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c1i77 wrote:
Not really.
I guess though your Linode is at Dallas DC, simply because downloads to Linode at Atlanta (and Fremont, in my experience) never reach that rate.
This fits with tests I ran last week (above).
Cliff
You'd be wrong, I'm in fremont. From dallas though:
'
Quote: ovrlrdq@cuppa:~$ wget http://cachefly.cachefly.net/10mb.test
--01:59:21-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net[205.234.175.175]:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 [application/octet-stream]
100%[=======================================================>] 10,485,760 2.21M/s ETA 00:00
01:59:26 (2.13 MB/s) - `10mb.test' saved [10485760/10485760]
Course it's only 6 hops from Fremont, and 9 from Planet. It is in Equinix though which has a fair chunk of connectivity. |
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c1i77
Joined: 23 Sep 2004
Posts: 70
Location: Delft, Netherlands
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| Posted: Thu Mar 15, 2007 2:26 am Post subject: |
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OverlordQ wrote:
http://cachefly.cachefly.net/10mb.test
... Course it's only 6 hops from Fremont, and 9 from Planet. It is in Equinix though which has a fair chunk of connectivity.
7 hops from Atlanta (pingtime ~17ms).
In summary then, the download rates (from http://cachefly.cachefly.net/ to various Linodes) are:
Code:
Atlanta (UML/cliff) ... 1.1M/s
Fremont (xen/pclissold) ... 10.6M/s
Fremont (UML/overlordq) ... 3.41M/s
Dallas (UML/NeonNero,overlordq) ... ~2.10M/s
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sweh
Joined: 13 Apr 2004
Posts: 232
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| Posted: Thu Mar 15, 2007 5:49 am Post subject: |
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FWIW, from a UML linode on host21 at HE I got
Code:
% wget http://cachefly.cachefly.net/10mb.test
--06:47:05-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 (10M) [application/octet-stream]
100%[====================================>] 10,485,760 1.52M/s ETA 00:00
06:47:11 (1.94 MB/s) - `10mb.test' saved [10485760/10485760]
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OverlordQ
Joined: 04 Jun 2004
Posts: 200
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| Posted: Fri Mar 16, 2007 12:58 am Post subject: |
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Since this is in the performance and tuning section, I might recommend tuning your tcp settings in the kernel :)
Here's from Fremont after some tomfoolery:
Code: ovrlrdq@thedarkcitadel:~$ wget http://cachefly.cachefly.net/10mb.test
--00:57:45-- http://cachefly.cachefly.net/10mb.test
=> `10mb.test'
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10,485,760 (10M) [application/octet-stream]
100%[============================================================>] 10,485,760 9.88M/s
00:57:47 (9.87 MB/s) - `10mb.test' saved [10485760/10485760]
Course congestion at the time could have been a factor. |
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c1i77
Joined: 23 Sep 2004
Posts: 70
Location: Delft, Netherlands
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| Posted: Fri Mar 16, 2007 1:03 am Post subject: |
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OverlordQ wrote: Since this is in the performance and tuning section, I might recommend tuning your tcp settings in the kernel :)
Here's from Fremont after some tomfoolery:
...
Course congestion at the time could have been a factor.
Please share your tomfoolery tips so the rest of us might enjoy a 3-10x speed boost ... .
(Congestion is an unlikely cause ... my measurements were taken at random points on Saturday and Sunday mornings (UTC).)
Cliff |
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OverlordQ
Joined: 04 Jun 2004
Posts: 200
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| Posted: Fri Mar 16, 2007 1:13 am Post subject: |
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http://dsd.lbl.gov/TCP-tuning/linux.html
YMMV of course |
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c1i77
Joined: 23 Sep 2004
Posts: 70
Location: Delft, Netherlands
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| Posted: Fri Mar 16, 2007 2:19 am Post subject: |
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OverlordQ wrote: http://dsd.lbl.gov/TCP-tuning/linux.html
YMMV of course
Thanks for this reference.
Trying it out:
Code:
BEFORE:
net.core.rmem_max=109568
net.core.wmem_max=109568
net.ipv4.tcp_rmem='4096 87380 87380'
net.ipv4.tcp_wmem='4096 16384 65536'
ifconfig eth0 txqueuelen 1000
AFTER:
net.core.rmem_max=16777216
net.core.wmem_max=16777216
net.ipv4.tcp_rmem='4096 87380 16777216'
net.ipv4.tcp_wmem='4096 65536 16777216'
ifconfig eth0 txqueuelen 1000
Unfortunately it made no difference at all -- I still max out at ~1.1M/s from both cachefly and host77 (my Linode's host machine).
Cliff |
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