Glasnost: Test if your ISP is shaping your traffic
april 2011 by Seumas
The goal of the Glasnost project is to make ISPs' traffic shaping policies transparent to their customers. To this end, we designed Glasnost tests that enable you to check whether traffic from your applications is being rate-limited (i.e., throttled) or blocked.
Glasnost tests work by measuring and comparing the performance of different application flows between your host and our measurement servers. The tests can detect traffic shaping in both upstream and downstream directions separately. The tests can also detect whether application flows are shaped based on their port numbers or their packets' payload. For more details on how Glasnost tests work, please read our NSDI 2010 paper.
We configured our tests to be conservative when declaring the presence of shaping, i.e., passing our tests does not necessarily mean that there is no throttling occurring on your link.
glasnost
broadband
test
testing
bandwidth
network
isp
provider
tool
utility
pop
imap4
http
ssh
nntp
torrent
bittorrent
emule
gnutella
measurement
analysis
detection
Glasnost tests work by measuring and comparing the performance of different application flows between your host and our measurement servers. The tests can detect traffic shaping in both upstream and downstream directions separately. The tests can also detect whether application flows are shaped based on their port numbers or their packets' payload. For more details on how Glasnost tests work, please read our NSDI 2010 paper.
We configured our tests to be conservative when declaring the presence of shaping, i.e., passing our tests does not necessarily mean that there is no throttling occurring on your link.
april 2011 by Seumas
Dawn of the Dead - Sun Microsystems - Schwartz - Project Blackbox
june 2007 by Seumas
Once one of the hottest companies in Silicon Valley, Sun Microsystems crashed with the dotcoms, but it kept pouring money into R&D. Now there are signs of a revival, thanks to a new CEO and a big black box.
sun
microsystems
sunw
technology
companies
corporations
analysis
june 2007 by Seumas
Wireshark: The World's Most Popular Network Protocol Analyzer
april 2007 by Seumas
Same developers, same code, different name. The Ethereal network protocol analyzer has changed its name to Wireshark.
Wireshark's powerful features make it the tool of choice for network troubleshooting, protocol development, and education worldwide.
network
security
tools
software
networking
opensource
ethereal
sniffer
admin
administration
analysis
Wireshark's powerful features make it the tool of choice for network troubleshooting, protocol development, and education worldwide.
april 2007 by Seumas
Who is Sick?
april 2007 by Seumas
Your site for current and local sickness information
sick
stats
statistics
analysis
map
april 2007 by Seumas
System Administrators Toolkit: Monitoring a slow system
august 2006 by Seumas
__TO_BE_READ,ibm,admin,sysadmin,computer,computers,performance,debugging,debug,analysis,cpu,process,troubleshooting,guide,howto,tutorial,linux,unix,top,vmstat,iostat,uptime,sar
ibm
admin
sysadmin
computer
performance
debugging
analysis
cpu
process
troubleshooting
guide
howto
tutorial
linux
unix
top
vmstat
iostat
uptime
sar
optimization
reference
_TO_BE_READ
august 2006 by Seumas
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