Archives for General - Page 11

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NFS – Block Size Monitor (DTrace powered)

DO NOT TRY IT IN PRODUCTION. USE AT YOUR OWN RISK! Hello there! Yesterday i was coding a simple tool to provide a better visualization of the block's sizes (read/write) on a NFS server. The primary objective was not consolidate informations, but just quickly visualize trends, for a short period of ...
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OSX, SXCE, and VirtualBox, great start!

That's it, simple like that! As every software combination should be. ;-) I was resisting to really create a virtualized development environment on my laptop, not because i do not trust in virtualization, actually i'm  a big fan... the problem is the big deceptions i had on the past trying to ...
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Twitter

As you can see in the sidebar, i'm using twitter and actually i'm enjoying it! I talk a lot, and so i many times talk to myself... i know, weird... so, with twitter i can write instead of talk to myself (but i'm still talking to myself :). Anyway, i ...
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OpenSolaris 2008.11 ZFS Performance

A simple test to see how the ZIL code behaves on a configuration where the slog could be a bottleneck... ZPOOL with 12 disks(750gb each) in load share: ZPOOL with 12 disks(750gb each) in load share, plus a 32gb slog: The ZIL code should not avoid write to the slog if the pool ...
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ZFS Internals (part #7)

PLEASE BE AWARE THAT ANY INFORMATION YOU MAY FIND HERE MAY BE INACCURATE, AND COULD INCLUDE TECHNICAL INACCURACIES, TYPOGRAPHICAL ERRORS, AND EVEN SPELLING ERRORS. From the MANUAL page: The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file ...
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Ubuntu and the kids…

Hello all, hope everyone had a nice christmas! These days i have decided to update the kid's destkop, an ubuntu 7.10 system with many, many customizations, and a lot of games, to the new LTS version (8.04). Well, i was expecting some problems, but no the ones i had... ...
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ZFS Internals (part #6)

PLEASE BE AWARE THAT ANY INFORMATION YOU MAY FIND HERE MAY BE INACCURATE, AND COULD INCLUDE TECHNICAL INACCURACIES, TYPOGRAPHICAL ERRORS, AND EVEN SPELLING ERRORS. From the MANUAL page: The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file ...
Continue Reading »