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Comment: Microseconds, not millis (Score 1) 236

"The traders count milliseconds", that's three orders of magnitude out. Single-digit microseconds are considered significant in low-latency algo trading. A useful ballpark figure is one microsecond is roughly 300 metres at lightspeed in vacuum (practically no different to the speed in air) but signal propagation in copper and glass is roughly two thirds of that - about 200 metres.

Comment: Etymotic earphones (Score 2) 561

by Obvius (#43181485) Attached to: Ask Slashdot: Best Way To Block Noise In a Dorm?
I commute by train and have a fairly low tolerance threshold for other people's inane chatter and noise pollution from crappy headphones. In a bid to stay out of prison for assault I invested in a pair of Etymotic earphones. IMHO they're arguably the best you can buy when it comes to sound isolation (as opposed to noise cancellation) and sound reproduction. They come with lots of different tips - you can even have custom tips made which are moulded to your ear canals. Expensive, yes. But they really work. Without any music they're like a good pair of earplugs, which as you say still lets through the occasional raised voice. Listen to some quiet, neutral music, though (as mentioned by others, try white noise, nature sounds or gentle ambient stuff) and they really do feel like an isolation tank for your head. You have my sincere sympathy - I too have suffered the chronic stress of other people's noise. If you can get the cash together, try these things out. They have greatly improved my quality of life. Good luck.

Comment: Re:A confessional... (Score 1) 203

by Obvius (#42092591) Attached to: Researchers Find Megaupload Shutdown Hurt Box Office Revenues

You know what, I'm ranting, I'm off topic, and I apologize. My personal ethics (and lack thereof) are irrelevant to the topic. This isn't about our differences of opinion on whether piracy is right.

Posts such as this give me just a tiny bit of hope that Humanity isn't headed for the dumpster.

Comment: Low latency / High Frequency Trading (Score 1) 464

by Obvius (#40179129) Attached to: Ask Slashdot: What Type of Asset Would You Not Virtualize?
If you're looking for a performance hike by binding a thread to a CPU using taskset or ThreadAffinity, you'll want to steer well clear of any kind of VM. In fact, if you're seeking any performance benefit by controlling what happens on the metal, VM is going to make that impossible.

"Why should we subsidize intellectual curiosity?" -Ronald Reagan