35,547 reputation
24172
bio website ripple.com
location Oakland, CA
age 45
visits member for 3 years, 4 months
seen 1 hour ago

I am Chief Cryptographer at Ripple Labs and one of the architects of the Ripple payment system.


3h
comment Computers in my network won't contact directly. They pass the local router, go to the internet router and come back
@EApubs That sounds about right. 72.2 Mbps = 72,200,000 bits per second = 9,025,000 bytes per second = 8,813 KBs ~= 8.6MBs. 80% line usage efficiency is pretty typical for WiFi (because of the need to send acknowledgements and the time it takes to turn the link around), so I'd expect around 6.9 MB/s. 6 isn't far off.
6h
comment Strong wifi signal but no internet connection
How precisely did you establish that the signal is strong?
8h
comment Is a MIMO 2x2 wireless access point the same as a dual-band access point?
Yeah. A larger number of cheaper access points will likely be cheaper and better. I will just caution that while I've had great luck with the UAP-PRO and UAP-LR devices, Ubiquiti's AC stuff is not quite ready for prime time, IMO. If you don't absolutely need AC, they're great. Otherwise, look at their competitors.
10h
answered Is a MIMO 2x2 wireless access point the same as a dual-band access point?
10h
comment Computers in my network won't contact directly. They pass the local router, go to the internet router and come back
@EApubs Are both PCs connected wirelessly? If so, that's pretty good. That would require a raw WiFi speed of 100Mbps or so.
16h
comment Computers in my network won't contact directly. They pass the local router, go to the internet router and come back
Is Search LAN even selected?
16h
comment Computers in my network won't contact directly. They pass the local router, go to the internet router and come back
Something is wrong with the way the devices are discovering each other's IP addresses. They're not finding the LAN 10.x address. Instead, they're using some form of NAT penetration.
1d
comment Computer is slow. Must move mouse to make it work
@user401416 Are you sure the hardware was assembled by someone who knew what they were doing? If it was shipped or transported, was it inspected afterwards?
1d
comment How to get my USB 3 hard drive working with a USB 2 device
Are you using the drive with an external power adapter or are you expecting the USB 2.0 port to power it?
2d
answered Using ethernet ports on Surfboard SBG6580 in bridge mode
2d
comment How to bypass BELL provided router with FIBE
The router is now acting as just a layer 2 device and not doing any actual routing.
2d
answered How do I consistently keep my RAM usage low?
2d
comment How do I consistently keep my RAM usage low?
@Doc Turning off swap causes inefficient RAM usage. It's not a good idea, particularly in a low RAM situation. (Without swap, modified unbacked pages must be kept in RAM because there's no place else to put them, even if they haven't been accessed in hours.)
2d
answered file transfer speed over wifi homesharing too slow
Dec
19
comment How do I install a solid state hard drive?
I agree that it's probably not a good idea, but surprisingly, it's probably possible.
Dec
19
comment How do I install a solid state hard drive?
Believe it or not, modern PATA/IDE SSDs are available in capacities up to 256GB.
Dec
13
comment Windows 7 / Page File Disabled / 12 GB RAM / 2+ GB RAM free and “your computer is running low on memory”
@JamieHanrahan Right. So Windows does not have some unusual notion of a "private mapping" meaning one that happens not to have any shared pages at some particular moment in time. That would be awfully strange.
Dec
13
awarded  Revival
Dec
12
comment Windows 7 / Page File Disabled / 12 GB RAM / 2+ GB RAM free and “your computer is running low on memory”
@JamieHanrahan I can't find anything that suggests that a mapping is described as "private" if there's only one process. That strikes me as non-standard and even bizarre. Can you point to specifically what makes you think MSDN is describing a mapping as "private" if there's only one process?
Dec
12
comment Windows 7 / Page File Disabled / 12 GB RAM / 2+ GB RAM free and “your computer is running low on memory”
@JamieHanrahan Private, for a mapping, does not mean "only one process". Punch "private file mapping" into your favorite search engine for nuggets of wisdom like "A file opened with private access can be written to, but the changes will not affect the underlying file." (I think you're confusing the semantics of the mapping with its implementation. The mapping may or may not be implemented with private pages, but that has nothing to do with whether the mapping itself is private.)