Project Status Update No. 5

Welcome to the precached project status update No. 5! In this cycle we mainly concentrated our work on creating a new companion tool named precachedtop. This tool will hopefully be useful to inspect the internal workings of precached and may be used to uncover hidden bugs. It follows the design principles of other top-like tools like e.g. htop.

What has been achieved

We created an UNIX domain sockets based IPC mechanism in the precached daemon that implements a simple request/response protocol.

The following requests are currently implemented:

• Get a list of currently traced processes
• Get in-flight tracer data of currently traced processes
• Get the current status of the prefetcher threads
• Request and drain ringbuffer of precached daemon’s internal events
• Get global statistics gathered by the daemon

The new precachedtop application periodically issues one or more of the above mentioned requests to the precached daemon, and then displays the returned data.

User Interface of precachedtop

Since precachedtop is still under heavy development, the UI is subject to change.

The precached team

Article Updates

This posting has been edited at: Thu Dec 21 09:01:00

• Rewording
• Fixed typos
• Publish