Tsuna's blog

I recently did some work on some of our frontend machines (on which we run Varnish ) at StumbleUpon and decided to track down some of the er...

I have a fairly simple problem: I want to count the number of lines in a file, then seek back to after the first line, and then read the fil...

I will be speaking about OpenTSDB at the Strata conference , Wednesday, February 02, 2011, in Santa Clara, CA. You can sign up with this ...

That's a interesting question I'm willing to spend some of my time on. Someone at StumbleUpon emitted the hypothesis that with all ...

Today I was puzzled for a short while by a machine on which Python seemed to be acting up: $ python Python 2.5.2 (r252:60911, Jan 20 2010, 2...

I implemented a command-line tool to discover and read JMX attributes on Java processes to make it easier to write monitoring scripts for th...

I recently came across PMP and found it surprisingly useful to troubleshoot and analyze live production systems, despite it being so ridicu...

In an earlier post about some of the most horrible APIs in the JDK (the date related APIs), I mentioned how the Java's IO APIs were equ...

So for some reason one of my servers had 12G of memory allocated to the dentry_cache that wasn't being reclaimed. Probably a bug in th...

Oh boy, the JDK was really poorly """designed""". Today's fail is: java.lang.AssertionError: cache contro...