性能监控工具 PerfMonger 0.5.0 发布

PerfMonger又是一个性能监视工具。 PerfMonger监视对象是类似于SYSSTAT（CPU利用率，IO的用途等）的那些，但PerfMonger可以收集和报告性能信息非常频繁（SYSSTAT的报告间隔时间为1秒的最小数目，但PerfMonger可以使用小得多，例如间隔0.5秒或0.01秒），可以在人类可读和机器可读的格式显示性能信息。

发布说明：本次发布的重点是提高可用性. The newly added 'summary' subcommand is very useful for summarizing recorded perfmonger log files. It also has many other improvements and bugfixes, including support for Ruby 1.8.7 (only Ruby 1.9/2.0 were supported before). PerfMonger is available on yum repository as of this release。