Jacob Repp

Nice Collection of Hash Functions

November 5th, 2008 by proj

Found a nice collection of hash routines written in D. These are easy to convert to other languages. I was just looking for Robert Sedgewick’s hash function since I didn’t have his book handy.

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NVIDIA SATA RAID == Total Fail

October 31st, 2008 by proj

Since my new nForce mobo supported sata raid I figured it would be worthwhile to have a bit of redundancy for my data in the event of a drive failure. I picked up a couple Half TB drives at Fry’s and put them into a SATA raid-1 configuration. This seemed like a safe bet and while it was fairly slow to bring this configuration online everything seemed fine.

About a week later I bring my machine up to notice some flashing red text in the BIOS. Once windows was up I had two drives and the nVidia tray icon was bothering me about my drives being in a ‘degraded’ state. This is just a fancy way of saying that the RAID setup failed and that I would have to choose a drive that would have the master data and rebuild the array from the BIOS. Note that nothing out of the ordinary had happened on my machine to cause this to happen. I closely examined the data, figured out which drive was on which controller port and dutifully rebuilt the array. I wasted a good evening going through this because I didn’t want to lose any data. I had some critical music data on the drive and wanted to make sure I wouldn’t lose everything. This was a night I normally would have been writing some useful code or recording some music.

To make a long story short this has happened over and over again. I have run integrity checks on the drives and they are both fine. Any time the machine crashes, the drives will go into a degraded state and require yet another manual rebuild. This of course is a complete waste of my time and really there is no excuse for a RAID solution to fail this UN-gracefully. The whole point is to keep me from having to deal with this kind of hassle. Not routinely force me to deal with it for no good reason. So here I am writing this post while I figure out again which drives have the latest files. I am done with NVIDIA SATA RAID. It is a complete and total epic fail. I would not recommend this to anyone.

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Investigating DB File Formats

October 20th, 2008 by proj

Just a small post, maybe more to come detailing actual implementation details:

Tree Structured Indexes

Design of BTRFS

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Low-Latency Windows Recording and Monitoring

May 16th, 2008 by proj

Here’s a good starter article if you don’t have any outboard:

[Audio Card Advice at Beaglesound]http://homerecording.beaglesound.com/9.html

If you’re willing drop close to a grand on an audio interface for a PC one of the best options is to go with RME. They have always consistently delivered solid hardware and the lowest-latency drivers you can get your hands on:

Review of Multiface

Interview with RME

Description of the Multiface

Many people sweare by the m-audio audiophile stuff that has come out recently.

If you don’t want to drop the money on outboard you definitely need to get ASIO4All.

ASIO4All ASIO

You may have to futz with the settings a bit. I’ve one of my machines down around 10ms which is not MPC quality but totally playable.

Jacob Repp

Game programming, music and life

Nice Collection of Hash Functions

NVIDIA SATA RAID == Total Fail

Investigating DB File Formats

Low-Latency Windows Recording and Monitoring