3 ms·

Can you quantify "a lot of latency"? It should be...a few microseconds more latency? I have to guess the high end networking equipment was configured incorrectl

Can you quantify "a lot of latency"? It should be...a few microseconds more latency? I have to guess the high end networking equipment was configured incorrectly or something. I ssh to machines on my network from wired and wireless devices and it is impossible to tell what kind of network you're on when doing so.

10000truths 5y ago
Latency highly depends on interference and attenuation. If you’re sitting right next to a 5 GHz AP that’s used exclusively by you, then your latency should be minimal. If you’re trying to connect to a router behind a couple of brick walls, or your roommate is using a leaky microwave, or you’re in a convention where everyone’s trying to connect to the same WiFi, then you’ll notice it in a video call, multiplayer shooter, slow-loading webpage, or anywhere else where double-digit-% dropped packets matter.
nextos 5y ago
Latency is a few tens of ms (milliseconds) larger. It's not that much, but it matters to me. It's like keyboards, as measured by Dan Luu [1]. I can totally feel the difference between some listed on that web. Stacks are adding up a lot of latency, and I'm trying to remove as much as I can from my configuration. An extreme comparison is to run Emacs in text mode with Ethernet, a good wired connection and USB Magic Keyboard vs Emacs on a heavy desktop environment, WiFi and a laggy wireless keyboard. Night and day difference. On the second one, there's a lot of lag. [1] https://danluu.com/keyboard-latency/ https://danluu.com/keyboard-latency/
rayiner 5y ago
Wi-Fi latency 5-10 ms typically, and highly variable. I'm on fiber, and my wi-fi doubles or triples the latency to close data centers (about 5 ms from here in Annapolis to Ashburn VA).
BenjiWiebe 5y ago
It's going to be more than microseconds for point to multipoint Wifi. Depending on signal strength, contention, hardware quality, WiFi mode, etc, you'll get multiple milliseconds. Right now I checked and got 20ms+/-5. 802.11n, decent signal strength, very low interference (rural location).
supertrope 5y ago
In midtown Manhattan 2.4 GHz is useless. Webpages take up to a minute and sometimes multiple attempts to load. More typical latency figures: https://hpbn.co/wifi/#measuring-your-wifi-first-hop-latency https://hpbn.co/wifi/#measuring-your-wifi-first-hop-latency

10000truths 5y ago

Latency highly depends on interference and attenuation. If you’re sitting right next to a 5 GHz AP that’s used exclusively by you, then your latency should be minimal. If you’re trying to connect to a router behind a couple of brick walls, or your roommate is using a leaky microwave, or you’re in a convention where everyone’s trying to connect to the same WiFi, then you’ll notice it in a video call, multiplayer shooter, slow-loading webpage, or anywhere else where double-digit-% dropped packets matter.

nextos 5y ago

Latency is a few tens of ms (milliseconds) larger. It's not that much, but it matters to me. It's like keyboards, as measured by Dan Luu [1]. I can totally feel the difference between some listed on that web. Stacks are adding up a lot of latency, and I'm trying to remove as much as I can from my configuration. An extreme comparison is to run Emacs in text mode with Ethernet, a good wired connection and USB Magic Keyboard vs Emacs on a heavy desktop environment, WiFi and a laggy wireless keyboard. Night and day difference. On the second one, there's a lot of lag. [1] https://danluu.com/keyboard-latency/ https://danluu.com/keyboard-latency/

rayiner 5y ago

Wi-Fi latency 5-10 ms typically, and highly variable. I'm on fiber, and my wi-fi doubles or triples the latency to close data centers (about 5 ms from here in Annapolis to Ashburn VA).

BenjiWiebe 5y ago

It's going to be more than microseconds for point to multipoint Wifi. Depending on signal strength, contention, hardware quality, WiFi mode, etc, you'll get multiple milliseconds. Right now I checked and got 20ms+/-5. 802.11n, decent signal strength, very low interference (rural location).

supertrope 5y ago

In midtown Manhattan 2.4 GHz is useless. Webpages take up to a minute and sometimes multiple attempts to load. More typical latency figures: https://hpbn.co/wifi/#measuring-your-wifi-first-hop-latency https://hpbn.co/wifi/#measuring-your-wifi-first-hop-latency