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Ulrich Dangel
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Ulrich Dangel

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The new parallel lookup and readdir code from Al Viro just landed in -git.

This is a big deal: we've always serialized accesses to the same directory using the directory inode mutex, and while cached lookups (or lookups in different directories) scaled fine, that per-directory serialization could keep you from getting good performance on some loads.

I remember looking at some nasty samba load that +Andrew Tridgell had, where the serialized readdir caused tons of problems. That was over a decade ago. And it should finally be fixed now, although I suspect samba has lots of workarounds to just avoid the issue.
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Ulrich Dangel

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This video is great fun, especially if you play an instrument. Any instrument at all. Or if you know someone who plays an instrument, which -- hi! -- you do.
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Ulrich Dangel

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+Alexander Ufimtsev  indian ale, the glass is just so nice and positive looking compared to the one you posted
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Ulrich Dangel

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Can you spot the background? Sometimes too much sun is bad
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But I like the slide topic :-) .., sorry for the double post
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Good naming is always a hard task. This simple rules help a bit.
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It is my pleasure to announce that the registration for ZuriHac 2015 [1] is open now.

If you want to participate in this year's Haskell Hackathon in Zurich, please fill out this form [2].

Make sure to wait for a confirmation email afterwards before booking. The event can only host around 90 participants. We will confirm registrations on a first come first served basis.

Please spread the word!

[1] https://wiki.haskell.org/ZuriHac2015
[2] http://goo.gl/forms/L24NgFRvCw
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Nice looking beer thanks to frozen foam
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:-)
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Autumn at the end of November
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Ulrich Dangel

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New reports show that XM can be found all over the place. XM allows you to observe the reality. The reality is that the earth consists of XM and isn't a perfect sphere. XM is what makes the world go "round".    #ingressMod  
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what a resolution #chromepixel  
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Yes, the memory size is not big enough for usage. :-(
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