Measuring performance improvements in CentOS 6.2

Friday, April 27th, 2012

Recently, we updated some servers from CentOS 5.6 to CentOS 6.2.  Of course, we carefully monitored the performance of the hosts, so we can make a comparison about the performance. The one big change we applied with the application of Cent OS 6 was switching from ext3 to ext4 (although as ...

Eating our own Tomcat Monitoring dogfood

Saturday, December 24th, 2011

We received some alerts tonight that one Tomcat server was using about 95% of its configured thread maximum. The Tomcat process on http-443  on prod4 now has 96.2 % of the max configured threads in the busy state. These were SMS alerts, as that was close enough to exhausting the available threads to warrant waking ...