FreeBSD

Effects of Changing vfs.ufs.dirhash_maxmem in FreeBSD

I have a busy web frontend server many files in a single directory. The server is running FreeBSD 8 amd64. Here is the result of changing the sysctl vfs.ufs.dirhash_maxmem to 67108864. Note the change in system (red) area. The vertical arrow shows when the change was made:

Recovering from a terminal full of gibberish

Have you ever accidentally tried to view a binary file and your terminal started spewing all sorts of weird characters?

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Performance presentation, Des Moines Web Geeks

Matt Nuzum, the webmaster of ubuntu.com, invited me to speak at the Des Moines Web Geeks meeting last night. The venue, Impromptu Studios, was a bit hard to find.

Watching traffic on FreeBSD

Ben Wong at MostlyGeek pointed out that a great way to watch traffic on FreeBSD is the command systat -ifstat 1 which shows:

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