35,632 reputation
24275
bio website ripplelabs.com
location Oakland, California
age 45
visits member for 3 years, 5 months
seen 18 hours ago

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


2d
awarded  Revival
Jan
21
comment Are powerline Ethernet adapters actual bridges?
@rjt I upgraded my switches to switches that support IGMPv3 hoping it would help. It helped with other multicast flooding issues, but not with the powerline adapters.
Jan
21
comment SSD slows in minutes, resets on reboot
@cniggeler Because the CPU and the drive are the two most likely explanations. If you have reason to think it's the drive and not the CPU, then you know something you haven't told us. And I'd like to have every possible clue before giving an answer.
Jan
21
comment SSD slows in minutes, resets on reboot
Why do you attribute this performance loss to the SSD rather than to, say, the CPU?
Jan
20
awarded  Good Answer
Jan
20
comment Why does my Firefox memory usage keep rising with use and never returns to the initial level?
@KarolyHorvath I'd be happy to continue this conversation with you elsewhere.
Jan
20
comment how to choose between high cpu frequency and hyper-threading
You can judge their relative performance with bechmarks such as this one. You'll get better answers if you describe your application/workload.
Jan
20
comment Are powerline Ethernet adapters actual bridges?
I've tried several different ones.
Jan
20
awarded  Promoter
Jan
20
comment Why does my Firefox memory usage keep rising with use and never returns to the initial level?
@KarolyHorvath You are wrong. Freeing up memory for other applications is inefficient because the memory has to be made free only to make it used again. It is more efficient to directly transition the memory from one use to another without making it free in the middle. Modern operating systems do this very efficiently, and that way it goes from one beneficial use to another beneficial use with no waste. No memory is wasted by being free, and no CPU is wasted by making something free just to have to make it unfree.
Jan
19
awarded  Tumbleweed
Jan
15
comment Two CPUs as a Single System
@PaulA.Clayton Yep, that's about the best you can do.
Jan
14
comment Google-Chrome download rate 700KB/s but total internet speed is 350KB/s
Can you be more precise about your units? Is the 3g receiver 350KB/s or 350Kbps? These are very different units. Are you sure Chrome is reporting 700kb/s? I believe Chrome reports in KB/s, which is a different unit entirely. Perhaps you mean 350KBps and 700KB/s? There are no units with k in them, and the KB and Kb units are very different and Kb/s and Kbps are different units too.
Jan
14
comment Why unconnected network card periodically sends DHCP requests?
The log seems to show the DHCP activity before the link is down, and it shows replies being received.
Jan
14
comment What to consider when putting a router inside of another network, not controlled by me?
Without a router, they can see every packet he sends to the Internet, and with a router they can see every packet he sends to the Internet.
Jan
13
comment Testing Used Memory - MemTest86 Not Working?
Make sure memory remapping is enabled in the BIOS. Also, reset all memory voltage and timing settings to their defaults (which should be auto).
Jan
12
comment Disable virtual memory in Windows 8 is good?
@Pacerier You disabled your paging files, you didn't disable virtual memory. (See Jamie's answer below.)
Jan
12
answered Two CPUs as a Single System
Jan
12
asked Are powerline Ethernet adapters actual bridges?
Jan
6
comment Asus EA-N66 in Access Point Mode wont accept connections with an Asus router RT-AC87U, worked perfectly on RT-AC66U
You don't really describe the problem really well. All you say is "wont accept connection" (but what does "accept" mean? what happens when you try?) and "does not work either". What exactly are you trying? And what exactly goes wrong when you try?