.pQd’s log

few months ago i bought kindle 3g. below what’s good and what’s bad about it.
Continue reading ‘kindle 3g’ »

i’ve migrated some vm from qemu-kvm-0.12.4 to qemu-kvm-0.12.5 and … got unpleasant surprise – unbootable machine.

Continue reading ‘“boot failed: not a bootable disk” after migrating kvm image’ »

i dont run query logging – more to avoid running out of the disk space on /var/log than for the performance reasons. but from time to time it’s good to be able to turn logging on to see what’s going on. in 5.1 and later versions it’s possible without restarting the mysqld.
Continue reading ‘mysql 5.1 – turning on/off query logging on the fly’ »

i’ve been playing for a while with mysql circular replication; here are some notes from setting it up.
Continue reading ‘mysql circular / master-master replication’ »

the lenny/squeeze way.
Continue reading ‘vlans over bridged interface’ »

most recent connector/j – 5.1.16 does not seem to work with sphinx search 0.9.9. i did not find [yet] actual cause of the problem but going back to 5.1.15 solved the problem for now.
Continue reading ‘mysql connector/j 5.1.16 + sphinxql 0.9.9 = MySQLNonTransientConnectionException’ »

i’ve run into nasty instability in mysql’s query execution plan joining few tables with 10s of millions of rows. mysql 5.1′s innodb_stats_sample_pages seem to solve the problem.
Continue reading ‘innodb_stats_sample_pages to save a day’ »

pare informacji o tym jak skonfigurowac publiczna podsiec /29 na routerze netii asmax ar-901.
Continue reading ‘ asmax ar 901 + netia dsl z 8 publicznymi adresami ip’ »

few problems/differences i’ve noticed after upgrade of debian.
Continue reading ‘lenny to squeeze upgrade – aftermath’ »

opera mini is a great mobile web browser. new release just got out; yet rss [quite an important features for me] seems to be a sort of neglected functionality. here’s how to get it to work in v6.
Continue reading ‘opera mini 6 + rss feed’ »