bandwidth

AWS EC2 Elastic IPs bandwidth usage and charges

痴心易碎 提交于 2019-11-27 09:36:27
问题 I have a little questions regarding Elastic IPs and its charge. Some blogs says that Elastic IP will charge you by the bandwidth you use Elastic IP addresses charge by bandwidth and have an hourly price when they are not attached to a running instance From http://things.zarate.org/scaling-a-single-ec2-instance-and-downsizing From my understanding after reading some blogs and the documentation, you will only be charged if you use the elastic IPs in communicating between instances and if you

Do certain characters take more bytes than others?

吃可爱长大的小学妹 提交于 2019-11-27 06:19:17
问题 I'm not very experienced with lower level things such as howmany bytes a character is. I tried finding out if one character equals one byte, but without success. I need to set a delimiter used for socket connections between a server and clients. This delimiter has to be as small (in bytes) as possible, to minimize bandwidth. The current delimiter is "#". Would getting an other delimiter decrease my bandwidth? 回答1: It depends on what character encoding you use to translate between characters

EC2 instance types's exact network performance?

夙愿已清 提交于 2019-11-27 05:48:21
I cannot find exact network performance details for different EC2 instance types on Amazon. Instead, they are only saying: High Moderate Low What does this even mean? I especially want to know the exact amount of Traffic-OUT on each instance type. I need to do live streaming and my stream bit rate will be 240kbps. So I need to know which instance type can handle how many concurrent viewers. BobMcGee Bandwidth is tiered by instance size, here's a comprehensive answer: For t2/m3/c3/c4/r3/i2/d2 instances: t2.nano = ??? (Based on the scaling factors, I'd expect 20-30 MBit/s) t2.micro = ~70 MBit/s

How to programmatically limit bandwidth usage of my c# application?

一曲冷凌霜 提交于 2019-11-27 03:36:18
I've got a backup application here which connects to various webservices and downloads/uploads files from ftp or http servers. What is the easiest way to limit the bandwidth usage of my application? I need to do that because the application once installed and running will be slowing down internet access for all office people, which eventually will get me into hell. So I'd like to implement a speed-limit which is active during the work-hours and gets disabled at night. What you are looking for is called Bandwidth throttling And here is a good example how is this done, also review the comments

Implications of using many USB web cameras

孤街浪徒 提交于 2019-11-26 21:58:43
问题 I'm looking into connecting multiple low resolution USB webcams to a single computer. What implications might this have on performance? How does, for example, four 320x240 cameras fare against a single 640x480 camera? I'm not well versed in the architecture of the USB interface, what are the performance caveats? By performance I mean how would it affect the time to read the image data from multiple cameras compared to a single one. 回答1: Each webcam is connected to a different USB port? If so,

How to get CPU usage and RAM usage without exec?

六眼飞鱼酱① 提交于 2019-11-26 21:51:32
How does VBulletin get the system information without the use of exec ? Is there any other information I can get about the server without exec? I am interested in: bandwidth used system type CPU speed/usage/count RAM usage Use PHPSysInfo library phpSysInfo is a open source PHP script that displays information about the host being accessed. It will displays things like: Uptime CPU Memory SCSI, IDE, PCI Ethernet Floppy Video Information It directly parsed parses /proc and does not use exec . Another way is to use Linfo . It is a very fast cross-platform php script that describes the host server

Tools for degrading my network connection? [closed]

限于喜欢 提交于 2019-11-26 19:46:06
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I've written some applications than heavily use network, and I would like to test it over a slow network. I'm looking for a tool to simulate these kind of connections. I'm only interested in Windows tools. 回答1: I've used Traffic Shaper XP on my XP dev box at work. It seems to handle any connection (not just HTTP

How do I simulate a low bandwidth, high latency environment?

时间秒杀一切 提交于 2019-11-26 19:14:45
I need to simulate a low bandwidth, high latency connection to a server in order to emulate the conditions of a VPN at a remote site. The bandwidth and latency should be tweakable so I can discover the best combination in order to run our software package. For macOS , there is the Network Link Conditioner that simulates configurable bandwidth, latency, and packet loss. It is contained in the Hardware IO Tools for Xcode . heckj There's an excellent writeup of setting up a FreeBSD machine to do just this - take your standard old desktop, toss in an additional NIC, and build. The writeup is

How to detect Network Signal Strength in iOS Reachability

若如初见. 提交于 2019-11-26 18:20:48
I am creating a new Traveling Application in iOS, this application is highly dependent on Maps and will include two Maps. My first Map will work when the user has a strong Network Signal (Apple Maps). My second Map will be used when their isn't any Network or really Low signal (Offline MapBox). Why do I have two different maps in one Application? My Application is a Direction App, so when the user has really low network or none it will go to the offline Map MapBox . Also the Apple Maps will have Yelp integration and not the offline Map MapBox . So my Question: How can I detect the network

Predict how much data will be pushed in a git push

扶醉桌前 提交于 2019-11-26 16:22:33
问题 I am occasionally on an expensive Internet connection and I would like to know (at least approximately) how much data will be pushed to the remote in a git push . 回答1: Actually, I think I like my comment enough to post it as an answer! When you push, git creates a pack of all the necessary objects and uploads that to the remote. This means we're looking for a way to predict that pack size. Since the packs are compressed, that makes it very difficult to do anything based on diffs or object