Esteban: at 28,800 modem is 28,800 BITS per second. Because of start/stop bits, figure 10 bits/byte, so it's 2880 BYTES/second.
Sounds like plenty of speed for monitoring 120 symbols.
Now, multiply that by 50, if you want to monitor all of NASDAQ. :) You'd need 12,500 bytes, second, or 100,000 bits/second. (I only multiplied by 8, because I assumed one would need a cable modem or ISDN connection...)
Of course, with QFeed, there is less of a reason for wanting to monitor all of NASDAQ, because they seem to provide excellent filtering mechanisms on the server. That is, it looks like you can have the server watch for interesting stuff for you, rather than having to pull all the data down to your PC to have it do filtering. |
