.pQd

Benford’s law

2012-03-042013-10-05 by .pQd

by a coincidence [process well described in this xkcd’s comics] i’ve stumbled on the definition of Benford’s law. since i have access to quite a lot of different economic & financial data i’ve decided to check if that law applies also to it.

morocco

2012-02-282012-07-22 by .pQd

in search for some February sunshine i’ve spent 11 days in Morocco.

extracting single database from a [large] mysqldump

2012-02-082014-12-01 by .pQd

extracting the whole database: sed -n '/^-- Current Database: `databaseName`/,/^-- Current Database: `/p' /path/to/the/fill/dump.sql > output.sql single table: sed -n '/^CREATE TABLE `tableName`/,/^\-\- Table structure for table /p' /path/to/the/fill/dump.sql > output.sql [via this blog]

aspies

2012-02-042012-02-04 by .pQd

few articles about mild form of autism: Jeff Atwood – Software Developers and Asperger’s Syndrome Tracy Mayor/computerworld – Asperger’s and IT: Dark secret or open secret? sounds familiar?

cloning the server using rsync

2012-02-042012-07-27 by .pQd

braindump of things to do/directories not to copy when cloning physical debian to a vm using rsync

sopa/pipa/acta

2012-01-222014-01-10 by .pQd

while sopa/pipa legislation in the US seems to be postponed after a wave of protests acta in EU/Poland is doing just fine; acta possibly will be ratified [at least in Poland] without much of the mainstream attention. is pushing this law through the EU parliament going to be the only ‘success’ of otherwise pathetic polish ... Read More

Quants: The Alchemists of Wall Street

2012-01-102012-01-07 by .pQd

http://www.youtube.com/watch?v=ed2FWNWwE3I

surge 2011 presentations

2012-01-092012-01-14 by .pQd

playlist: here most interesting [to me] talks: Keynote ~ Ben Fried A journey through the full stack in search of performance and reliability Theo Schlossnagle – Closing Plenary Theo Schlossnagle – Architectures for real-time data Scaling Etsy: What Went Wrong, What Went Right

[pl/en] Czeczenia / Chechnya

2012-01-072012-01-07 by .pQd

Czeczenia – Cena prawdy / Chechnya – the price of truth. http://www.youtube.com/watch?v=fFzKh9ls5YI http://www.youtube.com/watch?v=_VTTwVJojxQ http://www.youtube.com/watch?v=VIICOHGz94Q http://www.youtube.com/watch?v=9XZKSJLZeso http://www.youtube.com/watch?v=IkCkbzoomnM http://www.youtube.com/watch?v=FkeUeLj1t_0 Chechnya The Dirty War http://www.youtube.com/watch?v=k_2medFkNhI another movie by the same director [ Mariusz Pilis ] Exit afghanistan – http://www.youtube.com/watch?v=Wo-R_Yp2py0

switching reverse proxy from apache2 to nginx

2012-01-042013-05-14 by .pQd

i’ve been planning for a while to move away from apache2 as a reverse proxy in front of java appservs and start using nginx. i had two reasons: nginx can handle much better large number of concurrent connections [something we can make use of if we start using long-poll/comet], nginx gives more control over buffering ... Read More

Justice with Michael Sandel

2012-01-042014-01-10 by .pQd

pop-philosophy [aka the light version] with a political edge: http://www.justiceharvard.org/. playlist on yt. i’ve converted all of the lectures to mp3 [using this] so now i have something to listen to during the evening walks. as a counterbalance to the ‘soft’ stuff – 28c3 recordings: http://events.ccc.de/congress/2011/wiki/Documentation, and a list of talks; most interesting [for me] ... Read More

new sphinx, new connector/j headaches

2012-01-012016-09-07 by .pQd

sphinx 2.0.3 is out; and as new drama of getting mysql’s connector/j begins. i did not figure out [yet] any way of making both work using the latest 5.1.18 connector, but at least i’ve managed to convince one that i use now [ 5.1.15 ] to work with sphinx. what works: mysql-connector-java-5.1.13-bin.jar but.. only if ... Read More

excluding some mysql queries from the slow query log

2011-12-292011-12-29 by .pQd

i keep close eye on the mysql-slow.log log of queries that take more than 1s to execute. but at the same time i know about few house-keeping queries that are executed few times per day that by design take longer to execute [eg table checksums]. i don’t want those queries to ‘pollute’ the slow query ... Read More

ossec-syscheckd(1702): INFO: No directory provided for syscheck to monitor; Segmentation fault

2011-12-28 by .pQd

i’m playing around with ossec 2.6. i’m trying to set up server for agentless monitoring of multiple linux boxes. after installation [where i answered no for most of the question] i’ve run into the following problem: to make things work and not segfault on config generated by the installer i had to modify /opt/ossec/etc/ossec.conf and ... Read More