A Smackerel of Opinion

Notes and jottings from an ex-Ubuntu Kernel Team Engineer

Saturday, 27 June 2015

Static code analysis on kernel source

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Since 2014 I have been running static code analysis using tools such as cppcheck and smatch against the Linux kernel source on a regular b...
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Friday, 19 June 2015

Powerstat and thermal zones

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Last night I was mulling over an overheating laptop issue that was reported by a user that turned out to be fluff and dust clogging up the f...
Thursday, 18 June 2015

Snooping on I/O using iosnoop

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A while ago I blogged about Brendan Gregg 's excellent book for tracking down performance issues titled " Systems Performance, Ente...
Thursday, 11 June 2015

Adding CPU states and CPU frequency stats to powerstat

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During some spare moments I've added a couple of minor CPU related enhancements to powerstat .    The new -c option gathers CPU C-state ...
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