WLUG October 2013

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word perfect

by donald vitkus

can not install word perfect 8.0 on united linux any ideas

1 year, 11 months

Charter Telephone reviews, boylston?

by John Stoffel

Hi, Anyone on here using Charter Telephone VOIP service? I've currently got Verizon, but the wife hates it because our phone lines get flaky all the time, esp when it rains. So I'm thinking to save money and combine all my stuff onto Charter. I've already got High Speed internet and regular old cable. Not wild about Digital Cable since I'm happy with Tivo and I don't want yet another set top box to have to deal with... So, any horror stories about Charter Phone VOIP quality and service? Thanks, John

3 years

Idiot Service Providers

by Keith Wright

On recomendation from someone on this list, I signed up for Speakeasy DSL. The helped me set up a primary name server (DNS) and they ran a secondary name server for a few extra dollars per month. This has been working well for about a decade. Speakeasy was sold to MegaPath, who yesterday sent me a message that included this: > Dear MegaPath Customer, > > This email is to advise you that MegaPath is > migrating its legacy Speakeasy ISP, web hosting, > webmail and DNS services to a more advanced platform. > > <Braindead "customer-experience" > happy market-talk deleted> > > Going forward, we will no longer support secondary > DNS services. If your domain is set up in this > manner, please be sure to make the proper changes to > avoid a post-migration service disruption. This all happens next Tuesday. I read this is "We are breaking what has worked for a decade, there is nothing you can do, have fun finding a new ISP in two days." I was wall-punching cursing mad. When I calmed down a bit I began to think, if they don't break anything else, maybe it's not so bad. The system was designed to tolerate failure. _I_ was not designed to tolerate _intentional_ failure, but everything should still work if the secondary name server is broken. Since I have only one IP address on one DSL line, I never really saw the need for a secondary server in the first place. I run a primary server because (A) I like to think of myself as a programmer, and it is self education to figure out how to do it. (B) Sometimes I create subdomains and run test program servers in them. The RFC's require a second name server, and the registrar asks for it, but who's going to care really? If the primary name server goes out, so do all other servers in the domain, since it's all really just one computer. What would you recommend? If anyone else has the same problem, I could be your secondary, and you could be mine. -- Keith

8 years

Barbarians at the gates...

by Tim Keller

This is a paper about High Frequency Trading, it's an interesting if not entirely terrifying read about what a crazy place the markets have become. http://queue.acm.org/detail.cfm?id=2536492 Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

8 years

Bufferbloat demonstrations w/water and funnels

by Chuck Anderson

Here is a series of videos of a talk by Dave Täht where he uses water and funnels to demonstrate the concepts of bufferbloat: [1] Bufferbloat #1 - TCP 101 [2] Bufferbloat #2 - Tail drop queueing [3] Bufferbloat #3 - FIFO, RED, Blue, and Fair Queueing [4] Bufferbloat #4 - Wifi, Netalyzr, SFQ, SFQRED, and CoDel [5] Bufferbloat #5 - CoDel and Drop Head Queueing [6] Bufferbloat #6 - More on FQ_Codel [7] Bufferbloat #7 - Q&A [1] http://www.youtube.com/watch?v=KD5TwLQnq_8 [2] http://www.youtube.com/watch?v=PgFcqRMDqlk [3] http://www.youtube.com/watch?v=Y9xJbwb28Zc [4] http://www.youtube.com/watch?v=ol_BcKA9Ohg [5] http://www.youtube.com/watch?v=R8Esi0zjNdE [6] http://www.youtube.com/watch?v=bi-jumVNVGk [7] http://www.youtube.com/watch?v=JFH5fGNzBJU

8 years

Changing your network scheduler in ubuntu 13.04...

by Tim Keller

Just so people know... this is how to change the scheduler on Ubuntu 13.04. tc qdisc replace dev eth0 root fq_codel limit 100 target 5ms interval 30ms ecn Obviously replace "eth0" with your appropriate network device... Enjoy, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

8 years

Reminder: WLUG Meeting Wed 10/9 7PM Jim Gettys on Internet buffer bloat

by Chuck Anderson

Hi folks, The next Worcester Linux Users' Group (WLUG) meeting will be held this Wednesday. This month we will have Jim Gettys from Bell Labs talk about Internet buffer bloat. This is the talk that has been rescheduled from April. Note that there has been a room change to a larger room right down the hall from our regular location. Wednesday, October 9, 7:00 - 9:00 PM WPI Campus Center, Hagglund Room 301 The Campus Center is building #7 on the campus map [1], and the Hagglund Room is room 301 on the Campus Center building floorplan [2]. [1] http://www.wpi.edu/about/visitors/campusmap.html [2] http://www.wpi.edu/Admin/CC/Floorplans/37678.htm "Internet buffer bloat, by Jim Gettys (Bell Labs) VOIP and teleconferencing often perform much more poorly on today's Internet than the Internet of a decade ago, despite great gains in bandwidth. Lots of fiber, cheap memory, smart hardware, variability of wireless goodput, changes in web browser behaviour, changes in TCP implementations, and a focus on benchmarking Internet performance solely by bandwidth, and engineer's natural reluctance to drop packets have conspired to encourage papering over problems by adding buffers; each of which may introduce latency when filled. The mistaken quest to never drop packets has destroyed interactivity under load, and often results in actual higher packet loss, as TCP's congestion avoidance algorithms have been defeated by these buffers. The lessons of the "RED manifesto" of 1997 have been forgotten or never learned by a new generation of engineers." Wednesday, October 9, 7:00 - 9:00 PM WPI Campus Center, Hagglund Room 301 Afterwards, we will go out for pizza. See you there, Chuck President, Worcester Linux Users' Group http://www.wlug.org/

8 years

Announce: WLUG Meeting Wed 10/9 7PM Jim Gettys on Internet buffer bloat

by joel d

I plan to attend Wednesday's meeting also (90% likely at this point). Joel

8 years

Announce: WLUG Meeting Wed 10/9 7PM Jim Gettys on Internet buffer bloat

by Chuck Anderson

Hi folks, The next Worcester Linux Users' Group (WLUG) meeting will be held at its regularly scheduled time: the 2nd Wednesday of the month, which is Wednesday, October 9, at 7PM. The location will be the WPI Campus Center, Mid-Centry Room 331. This month we will have Jim Gettys from Bell Labs talk about Internet buffer bloat. This is the talk that has been rescheduled from April. "Internet buffer bloat, by Jim Gettys (Bell Labs) VOIP and teleconferencing often perform much more poorly on today's Internet than the Internet of a decade ago, despite great gains in bandwidth. Lots of fiber, cheap memory, smart hardware, variability of wireless goodput, changes in web browser behaviour, changes in TCP implementations, and a focus on benchmarking Internet performance solely by bandwidth, and engineer's natural reluctance to drop packets have conspired to encourage papering over problems by adding buffers; each of which may introduce latency when filled. The mistaken quest to never drop packets has destroyed interactivity under load, and often results in actual higher packet loss, as TCP's congestion avoidance algorithms have been defeated by these buffers. The lessons of the "RED manifesto" of 1997 have been forgotten or never learned by a new generation of engineers." Wednesday, October 9, 7:00 - 9:00 PM WPI Campus Center, Mid-Centry Room 331 Afterwards, we will go out for pizza. See you there, Chuck President, Worcester Linux Users' Group http://www.wlug.org/

8 years

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WLUG October 2013