Thursday, April 30, 2020

How the Linux VFS, block layer, and device drivers fit together

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The Linux kernel storage stack consists of several components including the Virtual File System (VFS) layer, the block layer, and device dri...
Monday, April 20, 2020

virtio-fs has landed in QEMU 5.0!

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The virtio-fs shared host guest file system has landed in QEMU 5.0! It consists of two parts: the QEMU -device vhost-user-fs-pci and the a...
Saturday, February 15, 2020

An introduction to GDB scripting in Python

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Sometimes it's not humanly possible to inspect or modify data structures manually in a debugger because they are too large or complex to...
Monday, February 10, 2020

Video for "virtio-fs: a shared file system for virtual machines" at FOSDEM '20 now available

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The video and slides from my virtio-fs talk at FOSDEM '20 are now available! virtio-fs is a shared file system that lets guests acce...
Sunday, February 9, 2020

Why CPU Utilization Metrics are Confusing

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How much CPU is being used? Intuitively we would like to know the percentage of time being consumed. Popular utilities like top(1) and vi...
Friday, February 7, 2020

Apply for QEMU Outreachy 2020 May-August internships now!

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QEMU is participating in the Outreachy open source internship program again this year. Check out the QEMU blog for more information about...
Friday, November 29, 2019

Visiting the Centre for Computing History

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I visited the Centre for Computing History today in Cambridge, UK. It's home to old machines from computer science history, 80s home...