Viewing profile — gregburek

The press release (edit: and I) skipped a step: "A portion of the laser beam is split off with a glass plate and directed to a photodetector that provides the syn- chronization sig…

More informative link: http://web.mit.edu/newsoffice/2011/trillion-fps-camera-1213.... Imaging Systems Applications Paper "Picosecond Camera for Time-of-Flight Imaging": http://www…

The MIT News Office article has more details than the PR video and a link to the paper: http://web.mit.edu/newsoffice/2011/trillion-fps-camera-1213.... The actual imaging device is…

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I have an electrical engineering background and all this FP VS IP sounds like Async Logic VS State Machines. How far off base is that description?

I'm getting the feeling that with all the unique server setups in use, monitoring and metrics systems are going to be just as unique and specific. There are some interesting proces…

How does everyone here gather and analyze their metrics? What do you have always deployed and what do you use when shit hits the fan? [Edit for typo]

Unfortunately, this last AWS problem affected multiple AZs in the us-east region. The OP very well may have had an alternate AZ failover plan, but like Quora, Sencha, Reddit, FourS…

I think that Microsoft Corp. v. i4i Limited Partnership, which was argued before the Supreme Court on April 18, may change how this plays out in the end. "Since 1983, the courts ha…

Convore is pretty new, but have you tried it for private chats? When it was announced, I immediately started to think how much easier it would be to set up for my non-technical co-…

Build-out Script for Postgres/PostGIS with RAID 10 on Amazon EBS volumes: http://sproke.blogspot.com/2010/12/build-out-script-for-post...

I found a benchmark from 2008 that details the problems with RAID10 and sourced it in a comment above [1]. These are just raw disk transfer numbers, though. I can only imagine how …

It also seems that in 2008 adding mirroring also hurt performance. I'm going to dive into this tonight to see if things have changed at all with these benchmarks. "His results show…

Duly noted. I started with this talk and have been using it as a guide to scaling edge cases with python as well as AWS. I thought raid10 was overkill before I started digging into…

Thanks for the extra info! I'm doing a lot of work now with python on EC2 and the reddit write ups + presentations have been a huge help. Thanks again.

So, I assume instances reddit uses have instance storage root volumes instead of EBS root vols. I've always assumed the persistence of ebs AMIs was a plus without a downside. Why w…

On page 500, under Discussion: "Blood tests assessing IgG levels against foods did not predict which foods might have a deleterious behavioural effect. ... We recorded no differenc…

That conclusion was really buried in there. Some form of confirmation bias on the part of a reader, perhaps?

The hypothesis was that IgG tests may pinpoint foods that in some way trigger ADHD symptoms. This was found to be incorrect. "We recorded no difference in behavioural effects after…

kgo may have been referring to how the contents of /private/tmp, /private/var/log and /private/var/tmp are not encrypted and may contain private information, such as com.apple.Quic…

I loved this series so much. It is a nice companion to this guide on creating a sick system: http://issendai.livejournal.com/572510.html

In my experience with business school and engineering school, EVERYONE asserts power before they earn it. Others may call it "fake it till you make it", but I would say that over-c…