Why 24-bit/192kHz Music is a Waste of Bandwidth
Why 24-bit/192kHz Music is a Waste of Bandwidth
Unless you’re considering sending ultrasonic “death noise” to your recipient… and even then, there’s no guarantee their audio will be able to output it correctly.
Why can’t you buy a heterodyne/parametric array desktop audio system?
This isn’t for your music—this is just for daily communication. Just think of how awesome it will be for video bloggers to be able NOT wear headphones and look like doofuses on Skype. This seems like a massive, untapped market for http://www.holosonics.com.
Bring back payphones with this technology and you’ll never have to touch an unsanitized handset ever again or worry about a missing handset.
I mean, really, kiosk “areas” for advertising your bananas in supermarkets is a really, asinine application of this technology. The only place I’ve ever seen this in the appropriate wild was a public library in Ogden, UT at a public-information station. But add a microphone to the mix and you’ve gotten away from mere pico-broadcasting and made something better.
Bonk.
You know, Advogato never did shut down. :)
For you Advogatians who are older, find an estate lawyer and financial planner to help you protect your assets-- because whatever you leave behind without instructions (aka will) will be administered by the State in ways you may not have liked. It isn't expensive to do this, and your family will greatly appreciate not having to grieve and juggle your finances at roughly the same time.
For you Advogatians who are younger, I realize that its somewhat morbid to ask your parents or grandparents about these things and might be uncomfortable doing so but you and your family should consider doing this at least every year because things change-- people die, friendships fade, relations change. And yes, you too also need to find a financial planner to help you protect and grow your assets into the future and as a benefit, doing is sooner rather than later will help you enjoy a better "retirement."
My worst day was last Tuesday, but I still think about him and I have four new reminders of him living in my house now, Mikey, Binkey, Fluffy and Precious; three tuxedo cats and a calico-tabby all with four distinct personalities. The arrangement is temporary as I think they'll eventually move back in with my mother. Otherwise, it has been non-stop phone calls and other reminders about him that have been pretty hard.
Pondering Subversion The ebuild in Gentoo requires neon 0.19.2 but Gentoo provides neon 0.21.3. I don't know how much time I'll spend hammering on it and give up and go with CVS, again. For those who haven't heard much about Subversion, there is a draft book at http://svnbook.red-bean.com/book.pdf. [...] Bummer, the ebuild fails. I've spent enough time on it for today.
The only test written is a connect-disconnect test and the harness makes runs roughly:
each benchmark to run 120 seconds
for each driver: (PostgreSQL, MySQL)
for each benchmark: (dbconnectdisconnect)
run the setup
for each concurrency: (1,25,100,250,500)
run that benchmark
summarize that benchmark
run the teardown
When it starts hammering 500 sessions I think either the 2.4.20 Linux scheduler or Python threading starts to choke. I don't have enough hardware to run the benchmarker against a different machine where I would expect some different numbers. Now I'm getting to a point where it's time to write some more interesting tests. The framework also tracks successful iterations which I just tested by setting the max-connections for MySQL down fairly low. I'm going to stop hacking on it tonight and go back and do some reading.
BT & Redhat 9 I'm not seeing as large a speedup for this download as I saw for Mandrake, could be a function of the mix of users attempting to download RH9.
Work Again, I'm taking on risk to be happy.
For the Advogato Commons: Draft/Code in Progress Working on a small database benchmarking harness for the purposes of comparing recent versions of MySQL and PostgreSQL. People too often say that "This or the other is better/faster" but it is still quite useful to be able to run some kind of benchmark to get some numbers. Many other database benchmarks out there have good concerns with "end-to-end" testing (browser-webserver-app-db as in TPC-W) but end-to-end testing takes too long to set up and administer and I think that there are some legal issues with "publishing" TPC-W numbers.
The Open Source Database Benchmark seems to be dead, it was written in C which I don't think is absolutely needed to get a general idea of how a database will operate. MySQL's sql-bench is written in perl but doesn't work with newer versions of PostgreSQL. I'm not sure that I want to use a benchmark written by a database vendor themselves when they may have intimate knowledge of the inner workings of their own system-- but also sql-bench does not seem to have a "concurrent" method of testing where multiple sessions are hammering on the database simultaneously.
I really do love Python, so I'm going to go at it with Python. Perhaps the work will create some more pressure to help bring Python's database support to the levels of Perl DBI.
What? No, this isn't an April Fools thing.
The Straw that is ATA/IDE Waiting on an updatedb to complete so I can use the locate command without a warning. This is driving me nuts-- I wish there were a way to make these drives faster.
pydbbench I hope I didn't accidentally use someone elses name, I didn't do a search. I haven't finished the code to summarize the total "measurement" for all sessions, but each session knows how to count the number of iterations, rate of execution, and min,max,avg times of execution. This is connect/disconnect for PostgreSQL 7.3.2. Eventually I'll figure out how to chuck this into SVG for more oohs-and-aahs. I'm pretty happy with Python's treading so far.
1 session ssn 0 name do_dbconnectdisconnect timelimit 10 iterations 385 rate 38.000/s min 0.018036 max 0.136911 avg 0.025974 5 sessions ssn 3 name do_dbconnectdisconnect timelimit 10 iterations 66 rate 6.000/s min 0.019086 max 0.429477 avg 0.151648 ssn 1 name do_dbconnectdisconnect timelimit 10 iterations 67 rate 6.000/s min 0.022207 max 0.451928 avg 0.151311 ssn 2 name do_dbconnectdisconnect timelimit 10 iterations 83 rate 8.000/s min 0.021862 max 0.324185 avg 0.123009 ssn 0 name do_dbconnectdisconnect timelimit 10 iterations 86 rate 8.000/s min 0.019195 max 0.412027 avg 0.119611 ssn 4 name do_dbconnectdisconnect timelimit 10 iterations 97 rate 9.000/s min 0.018624 max 0.382124 avg 0.105128 25 sessions ssn 4 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.188134 max 0.778501 avg 0.588586 ssn 3 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.182435 max 0.774702 avg 0.591407 ssn 0 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.194805 max 0.826876 avg 0.595367 ssn 5 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.221709 max 0.859946 avg 0.599044 ssn 22 name do_dbconnectdisconnect timelimit 10 iterations 16 rate 1.000/s min 0.539721 max 0.879632 avg 0.628659 ssn 21 name do_dbconnectdisconnect timelimit 10 iterations 16 rate 1.000/s min 0.482847 max 0.946763 avg 0.632173 ssn 24 name do_dbconnectdisconnect timelimit 10 iterations 16 rate 1.000/s min 0.554055 max 0.947282 avg 0.631847 ssn 6 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.204366 max 1.102799 avg 0.608936 ssn 2 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.189930 max 0.938403 avg 0.609606 ssn 11 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.190076 max 0.919035 avg 0.602645 ssn 9 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.312997 max 0.918923 avg 0.615667 ssn 7 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.276532 max 0.878170 avg 0.618143 ssn 10 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.243147 max 0.922962 avg 0.619472 ssn 17 name do_dbconnectdisconnect timelimit 10 iterations 16 rate 1.000/s min 0.540462 max 0.894974 avg 0.648541 ssn 8 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.268107 max 0.932455 avg 0.624780 ssn 12 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.229943 max 0.903213 avg 0.618912 ssn 13 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.216434 max 0.949649 avg 0.619694 ssn 1 name do_dbconnectdisconnect timelimit 10 iterations 18 rate 1.000/s min 0.033609 max 0.949737 avg 0.595317 ssn 15 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.317664 max 0.940005 avg 0.622457 ssn 19 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.298987 max 0.946451 avg 0.624361 ssn 23 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.490933 max 0.944254 avg 0.628118 ssn 18 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.285008 max 0.995577 avg 0.630302 ssn 16 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.343448 max 1.094034 avg 0.635534 ssn 14 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.332970 max 1.043219 avg 0.638293 ssn 20 name do_dbconnectdisconnect timelimit 10 iterations 17 rate 1.000/s min 0.380707 max 1.072901 avg 0.638602
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!