derobert

24 ms·

181.
by derobert 17y ago
Neither RAID5 nor RAID6 give you integrity checks. Each block of data is only read from /one/ disk, unless that disk is failed (in which case parity & data is read from the remaining disks to calculate that block). If the disk recognize
182.
by derobert 17y ago
Much better approach (assuming all your terminals use the same colors codes, you could of course use tput if not): RED="\[\033[31;1m\]" NORMAL="\[\033[0m\]" PS1_INSIDE='\u@\h:\w$bad\$ ' PS1="\` retcode=\$? ; if [ 0 -ne \$ret
183.
by derobert 17y ago
The $23 billion in short-term assets on their balance sheet—or rather, a small portion—could help, if they really care.
184.
by derobert 17y ago
http://news.ycombinator.com/item?id=1055429
185.
by derobert 17y ago
5V * 0.8A = 4W. Wireless access points are around 50–100mW. Even if you put a 100% efficient Dyson sphere around your APs, you'd need 40–80 of 'em.
186.
by derobert 17y ago
I grabbed the last four annual revenues for Amazon and Walmart from Google Finance. The average growth (in revenue) for Amazon over that period is 31%; for Walmart, 9%. World GDP growth is about 7% per year (over the last 30, through '08).
187.
by derobert 17y ago
L1, L2, and L3 data cache make that easily possible. The write is cached, and the read is satisfied from the cache. Alternatively, there could be aliasing going on, and that read/write is actually going to a different DIMM (and thus corrupt
188.
by derobert 17y ago
Requiring students (male or female) to tie up long hair or not wear loose-fitting clothing when working with power tools in shop class is a safety concern. Requiring long jeans in sheet metal working (to protect from sharp edges) is a safet
189.
by derobert 17y ago
How 'bout Max Miedinger?
190.
by derobert 17y ago
Neep http://www.jmknoble.net/fonts/ Unfortunately, its a bitmapped (non-scalable) font...
191.
by derobert 17y ago
The advanced option idea sounds good. By default, I'd suggest follow the redirect, and add the time of both requests together (e.g., do what a browser would). Other options would be to not follow the redirect, or to accept only a certain st
192.
by derobert 17y ago
"Sign up" is two words. After three sites, I was told I needed to upgrade. Clicking said link did nothing. But can still add sites by going to http://nimbu.net/addresses/new ; an error is presented, but the site is added anyway. Calling re
193.
by derobert 17y ago
That link is actually the current one on my Debian testing/Squeeze system. Its part of at least reasonably current glibc releases.
194.
by derobert 17y ago
First, money put in a bank savings account is used by the bank to make loans. Its not put in a hole in the ground. Money put into bonds is spent by the issuer. Etc. Second, even if it did, the effect can be (and will be) counteracted by the
195.
by derobert 17y ago
First, transaction costs on following an S&P index are tiny. Second, I'm not sure how you got 8% from a graph showing a 10-year return of around 300%.
196.
by derobert 17y ago
No, it's basically a list of foods commonly consumed raw. The chicken was far more likely to make you sick when consumed raw, but the salmonella died somewhere around 150°F.
197.
by derobert 17y ago
If this is a real problem, perhaps browser makers should just ignore the second click?
198.
by derobert 17y ago
An experiment is easy to run. Obtain a Kill-a-Watt or other power meter, then measure (a) how much power the freezer uses over a day w/o freezing extra ice for fan-ice cooling, repeating several times; (b) how much power the freezer uses ov
199.
by derobert 17y ago
I believe the inefficiency of an empty freezer/fridge actually comes from it being inefficient to cycle the compressor. The low heat capacity of air leads to the compressor cycling often.
200.
by derobert 17y ago
With the ice-fan, the heat from the room is going into melting the ice (and, eventually, warming that water to room temperature). The freezer, of course, works just like an AC: it moves the heat from inside the freezer to outside the freeze
201.
by derobert 17y ago
"Why can't the US military increase the pay for the soldiers, hire more soldiers and reduce the number of contractors?" Soldiers aren't paid very much directly, but the indirect costs are huge, including at least room and board, training, a
202.
by derobert 17y ago
"How much CO2 was generated in making the new cars? How much CO2 will be generated in making the new cars to replace the ,now empty, dealer lots?" Nitpick: You're counting those emissions twice. You can count the CO₂ emissions either when t
203.
by derobert 17y ago
http://news.ycombinator.com/item?id=741661
204.
by derobert 17y ago
The Fed now pays interest on reserves (new as of last fall). When the Fed wants to pull that money out, it can (1) raise the interest rate on reserves, thus encouraging banks to hold the reserves and (2) sell the assets it bought to raise t
205.
by derobert 17y ago
The expansion of the universe is causing things which are not gravitationally (or stronger) bound to get further apart. So, your later scenario is closer to true, except that some galaxies are gravitationally bound to each other. For exampl
206.
by derobert 17y ago
Those costs are not at all kind of like externalities because an externality is an impact on a not directly involved ("external") party. But these costs are all on the organization who decided to outsource, so — unlike with externalities —
207.
by derobert 17y ago
Reading the entire structure into memory brings all kinds of problems with it, such as knowing when to throw out your in-memory copy because the database changed. It is also problematic if the tree is large. Reading the entire tree into mem