Questions tagged [throughput]
65 questions
24
votes
1 answer
How does my VPN improve my download speed?
For some reason, I was downloading something at 300kb/s. Then I turned my VPN on and the download speed jumped up to 1.3mb/s.
Why is this? Is it because the VPN server reduces the jumps between me and the server?
RazeLegendz
- 345
21
votes
2 answers
Does 1 Gbit/s port in full-duplex mean 1 Gbit/s send and 1 Gbit/s receive?
I'm figuring out the best router for me based on their performance.
When you have a 1 Gbit/s port in full-duplex, does that mean you can send 1 Gbit/s and receive 1 Gbit/s at the same time? Or is it 512 Mbit/s in each direction to sum 1 Gbit/s?
For…
user76585
18
votes
3 answers
How seriously does cable length affect USB 3.0 transfer speeds?
Recently I've been thinking of upgrading my computer with some USB 3.0 ports. However, the problem is my computer is some ways away from my desk so that would mean I would need a long cable, approximately 10ft or so.
My question is how badly does a…
Faken
- 1,461
12
votes
1 answer
Synology read performance degrades with Jumbo Frames over 6000
Short Version
My home network is pure gigabit with devices that all support jumbo frames up to at least ~9000 bytes. Increasing the MTU jumbo frame setting on the Synology to 6000 (bytes) increases performance (810Mbps write and 945Mbps read). …
colithium
- 1,075
12
votes
4 answers
Highest effective transfer rate on SATA II
Assuming I have a SATA III SSD drive that has a throughput of >500 MB/s. What is a reasonable estimate of the effective throughput on a SATA II controller?
I know that SATA II has 3.0 GBit/s theoretical throughput but I am looking for a value of the…
ARF
- 731
4
votes
2 answers
Throughput from devices on gigabit switch to gigabit router
I think this is a pretty simple question, but I wanted to either validate my thinking, or for someone to tell me I'm wrong.
My router at home has 4 gigabit ports. So, obviously, each (supported) device connected to it is over a gigabit…
dark_perfect
- 143
4
votes
2 answers
How does the link speed affect TCP throughput?
Can someone explain to me how data is transmitted over a network using TCP/IP? Let's say I currently receive 500 Mbps of data over a 1 Gbps line right now. If I upgrade the line to 10 Gbps, would my data speeds increase to 5 Gbps due to…
eek
- 431
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4
votes
4 answers
Windows 7, download speeds drop to 0 kb/s and the download has to be restarted
My PC has an SSD as C: and a sata drive for D:
The SSD is brand-new and so I have reinstalled Windows 7 64-bit. I have installed the latest network drivers from the motherboard manufacturer, in fact these are the same drivers I was using previously.…
Marcus
4
votes
4 answers
Linux: Limiting data throughput (pipe) in bytes per second?
I was wandering if there is a Linux program that can limit data throughput of a pipe - in actual bytes per second?.
From what I gather, applicable for the purposes would be
bfr, however, it has been removed from Debian (Removal candidate:…
sdaau
- 6,008
4
votes
5 answers
Upgrading from single core to dual core - Will throughput get doubled?
If i replace a single-core processor with a dual-core processor, Will it increase the throughput by two times ? If No, why throughput does not get doubled ?
Karthik Balaguru
- 270
3
votes
1 answer
Why are USB connectors different from RJ45/Ethernet connectors?
I note that USB cable and Ethernet cable (RJ45/Cat5/...) have the same function : to transmit data as fast as possible over a wire or a port that we can connect and disconnect.
In their evolution they both try to maximize throughput in bit/second…
Malkio
- 31
3
votes
1 answer
How to estimate download/enumeration times in large USB trees?
I'm doing a system design in which many flash-memory devices are connected into a USB tree of hubs, and I need to estimate how long it will take for them all to do a download ... which is complicated by my lack of in-depth understanding of USB! I'm…
Wayne
- 131
3
votes
1 answer
TCP Throughput testing tools with ability to rate-limit?
I'm looking for test software that can generate test streams with the TCP/IP protocol, but limit the rate of the test data. For example, if using 100Mbps Ethernet, I would like to be able to generate a 1Mbps TCP/IP stream.
Tools like Iperf/Jperf…
tim11g
- 2,058
3
votes
1 answer
Maximum throughput for a network switch for multiple simultaneous transfers between different ports
On a typical network switch each port runs at a designed maximum speed, eg: 100Mb/s
But is there a limit to the maximum transfer rate between all ports of the switch at a given time?
I am guessing that all the data has to go through a single…
Samuel Jaeschke
- 539
3
votes
2 answers
internet bandwidth measurement?
How the internet speed is calculated, and how does it differ from other speed measurements (like CPU speed)? For example, what does it mean if somebody says, "my internet speed is 512"?
JavaUser
- 297