1
vote
1answer
56 views

Why does my cursor speed slow down when my system is under intense network usage?

On some occasions of computer usage, my mouse acts very strangely. Whenever my computer is under intense network usage (i.e. watching an online video, downloading an application, patching a video ...
0
votes
1answer
21 views

Iperf network benchmark measures under-utilized?

I am working on two embeddded high performance network routers and I have connected them point-to-point via a 10Gbit optical fibre cable. I ran iperf benchmarks on them and when I connect through an ...
0
votes
0answers
32 views

Slow File Transfer over Gigabit Network

There are a few computers connected to a computer (Windows 7 x64) via a Gigbait network in order to transfer file, however lately the transfer of files has been really slow (11Mb/s) I have already ...
0
votes
1answer
21 views

How can internet speed test applet not just show slow speed, but hang?

I have one internet connection, which works bad. It should be 80/20, but works much slower. Also, when measuring it's speed, speed test applet not just show slow speed, but HANG. How can it be ...
0
votes
0answers
26 views

Network speed significantly reduced on Win Server 2008 DC

I started building a little server at home on a Gigabit network. I am running Windows Server 2008 32bits SP2. Before making the server a Domain Controller, I was able to get file transfers at an ...
2
votes
2answers
177 views

Windows 7 / SMB2 slow network copy performance

Troubleshooting a tricky performance problem and wondering if this behavior is normal/expected. This seems to be related to SMB2, as switching to SMB1 resolves things. The question is whether this is ...
0
votes
1answer
112 views

WD my cloud 4th is Super Slow

I am using a WD my cloud 4Tb and I have read other posts about users complaining about getting only 10Mb per second. My problem is that I am getting about 100kb/s to transfer a 125gb iPhoto library. ...
0
votes
0answers
100 views

Windows server 2012 becomes slow

I have a server with following configurations. This is new IBM X3630 M4 server established before one month. Processor : Quad core Xeon E5-2620v2 single processor RAM : 8 GB NIC : 2x 1GbE HDD : ...
0
votes
2answers
46 views

Office network bottleneck

At work our IP is the devil Comcast. When I do a speedtest I get a jump of upwards of 20Mbs and then it slowly goes down to average out at around 10Mbs. The upload speed stays at stead 2-3Mbs. My ping ...
0
votes
1answer
95 views

Slow LAN connection (especially receiving) on Windows 8

I was diagnosing my SMB performance issues when I noticed my whole network speed was off. These are my benchmarking results between my desktop and my Linux server: Both are connected using CAT6 and ...
0
votes
1answer
33 views

Are there performance benefits of using 127.0.0.1?

I administrate a web application that runs on Windows IIS. Recently during an upgrade I saw the following message: "Could not connect to webapp-01:1000" I think that the web app and the windows ...
0
votes
2answers
81 views

Ubuntu 13.10 - make eth0 or wan0 interface upload/download into slow motion for testing software

I have a software where i need to test by making some low speed internet, very limited upload/download, after some time auto disconnect and reconnect such scenarios. I have found that i can try wanem ...
0
votes
0answers
38 views

Achieving very low network latency in Windows (<1ms)

I'm running windows server 2008 R2 on my server and I need to optimise my latency to a certain server, which is currently ~0.4ms (both servers are remote servers in the same datacenter). The server ...
0
votes
0answers
26 views

Poor wireless performance after WiFi printer intstall & uninstall

A few weeks back I installed a Canon WiFi printer, which caused all manner of issues with my laptop's COM ports (see - Cannot Delete Unwanted COM ports - Windows 7). Unfortunately by the time I ...
1
vote
0answers
20 views

Utility service that logs total network usage

I would like to know the total bandwidth our internet provider essentially provides to the many competing devices in our home. Is there a simple windows service that uses a wireshark like trick to log ...
0
votes
2answers
80 views

New Desktop Computer, Internet SLOW but We pay for 65mbps

I'm so confused, my internet on my new lenovo k450 is incredibly slow, speed test is reading 1.15mbps (on average). We pay for 65mbps (I believe) with comcast - this is what the connection speed ...
0
votes
0answers
43 views

External Hard drive Filesystem

I've got a Linksys EA6900(AC1900) router. And I have a 3TB WD External Hard Drive connected to it via USB 3.0 port. My Vaio laptop running Windows is connected to the router via an Ethernet cable. ...
1
vote
0answers
37 views

One Windows 7 pc slows down when another pc is turned on

I have a very strange problem that is affecting only 1 computer of the network (a network composed of 6pcs and two network printers): If I turn on pc number ONE first, and pc number TWO after that, ...
0
votes
2answers
99 views

Slow ping on one machine

We have 13 computers connected to Windows 2008 Server R2 Domain. There is Windows 7 64-bit Professional on all of them. The computers have same configurations and are quite fast (Intel Core i3, fast ...
1
vote
1answer
219 views

Powerline / Wifi networking performance limitations

I've currently got a Homeplug AV (Powerline AV200) network around my house that I've been using to stream films. However, I've recently ripped a few Blu-Rays at full bit rate and realised I've not ...
0
votes
0answers
78 views

VMware 5.1 Network drop

I am running a low latency demanding appliction on a VM in VSphere 5.1. The TCP/IP transfer rate is 124 MBit. I have an intermittent problem related to the network dropping and then slowly increasing ...
0
votes
1answer
528 views

Why is using VPN can increase my speedtest result?

My internet connection is 2 megabit download. I connect to my VPN and did speedtest and the download speed result goes up to 11+ megabit download. However when I try to download any file the speed ...
1
vote
1answer
1k views

Enabling wifi adapter causes slow laptop until reboot OR while AC adapter is plugged out

It's been a couple of weeks now that I feel that my pc is feeling slower than usual. Not just network related things but just about everything gets a delay (timings at the end of the post). It's like ...
3
votes
2answers
302 views

How to collect data about processes network activity?

Windows has Performance Monitor and Data Collector Sets feature. Apparently, it can log all system information. I want to know, how much data, per process name, per remote IP address, was received ...
0
votes
1answer
66 views

Irregular time-delay while deleting files

I have a very general question. I am running on Red Hat Enterprise Linux Workstation release 6.2 (Santiago) in a network where my workstation from time to time needs an annoyingly long period to ...
2
votes
0answers
113 views

How much performance reduction is ok for a linux router?

I am having thew following (simplified) setup: I have a private Subnet where my PC is located. The subnet goes over a virtualized server into the internet. The server uses internally two subnets: One ...
1
vote
5answers
2k views

How can I improve the annoyingly slow internal speed on my home network?

My network is already set up and has been working for "a while". I have wifi and wired internet on a bunch of devices and stations (more than I care to admit), the gigabit router is working and ...
0
votes
1answer
292 views

Slow upload speeds on windows 7 only

I have had some issue's since i've changed network cards, previously used a killer network card, now back to the on-board card, my download speed is absolutely fine, no issue, only my upload speed is ...
-4
votes
1answer
632 views

My internet provider is limiting my download speed but not browsing speed, How can I overcome that? [closed]

I'm connecting to internet through ppp connection which gives me a speed of ~ 1 mB/s for browsing and a speed of exact (no less or more) 50 kB/s for downloading. but when using socks server (Tor), it ...
-2
votes
6answers
1k views

Does a gigabit switch impact internet speed?

My friend once told me, in some debate, that whether or not someone has a fast/gigabit router doesn't impact their internet speed because the internet is much slower than 100 and 1000 mbps. I ...
0
votes
1answer
681 views

network problems with one wired computer causing slow or crashing internet

i have dsl service and am pretty computer savvy. here goes. its a weird one. i have two hard wired computers to a c1000a centurly link modem/router"wireless also" combo unit, also we use one ...
0
votes
0answers
161 views

Spree rails server is too slow for public ip accesses

I installed spree rails server, and I'm running it. When I access it from local lan like "http://192.168.x.x:3000", it's reasonably fast. It takes less than 5 seconds to show the first page. But, if ...
1
vote
1answer
200 views

Why are network speed tests slower with further away servers?

When running network speed tests (like speedtest.net), why do further away servers give distance-proportionally slower speeds? I gather there are more "hops" for the packets to bounce through, and ...
2
votes
2answers
414 views

Gigabit - Throughput bound more by CPU/RAM, or Disk IO?

Setting up some network file shares. I'm looking at either a NAS or a headless desktop PC. Both have gigabit ethernet, and comparable SATA connections. The main difference being CPU and RAM. How much ...
0
votes
1answer
573 views

A brand new Samsung laptop with extremely slow internet connection

I just got a new Samsung laptop with windows 8, and the internet is extremely slow, altough every other computer in the house works fine. My internet connection is supposed to be 100mbps, but in most ...
0
votes
1answer
108 views

Old Cat5 Network Cable With Gigabit Equipment [duplicate]

We moved into a different building a couple of years ago. Instead of rewiring everything I elected to use the existing wiring. I tested it all and only replaced the defective wires. Currently, here ...
2
votes
2answers
1k views

Browsing to localhost is slow when connected to Internet

When I browse localhost in my browser when connected to the Internet, the response is slow; it takes 30 seconds or completely times out. When I disconnect from the Internet, it is blazing fast and ...
0
votes
1answer
824 views

MTU, RWIN, and MSS

I have been doing some reading into TCP Receive Window (RWIN), Maximum Segment Size (MSS) and Maximum Transmission Unit (MTU). Right off the bat I have some questions and I need a power user's help! ...
0
votes
0answers
50 views

Determining contributors to elapsed time during a network request

The situation: There is a remote server. I am running a client program that makes calls to the server and requests data. These requests perform very slowly. The server limits the number of results ...
0
votes
3answers
166 views

How do I test network performance between server and smart-devices

I am currently working on a test use case where I need to test performance (benchmark) between a server/computer and smart-devices (tablet, smartphones etc.). The benchmark I want to do is based on ...
0
votes
1answer
216 views

Does chaining network switches degrade network performance? [duplicate]

Our office currently has something in the region of 50 machines all hooked up by a web of switches which all link back to a single switch in the server cabinet. Our IT vendor has recently changed ...
2
votes
2answers
2k views

Why is my UDP so slow?

I'm using Iperf on two VMs and when using TCP I find the performance is as follows: notroot@ubuntu:~$ iperf -s ------------------------------------------------------------ Server listening on ...
1
vote
1answer
95 views

SNMP: Calculating polling

I'm doing some reading on SNMP and have Stallings' book "SNMP, SNMPv2 and RMON" (1996). He shows how by using some basic math you are able to "determine the maximum number of stations that the ...
10
votes
5answers
4k views

Extremely slow internet speed after reinstall

I have recently had a hard drive failure so I was forced to reinstall my OS (Windows 7). After a fresh install, I noticed the internet speed became extremely slow (~15 minutes for downloading a 20MB ...
2
votes
2answers
12k views

Painfully slow transfer speeds on Synology DiskStation DS412+ NAS?

I've just bought a Synology DiskStation DS412+ and put 2 x 3TB Western Digital Red drives in it, set up in RAID 0. It's currently plugged in to my gigabit Netgear switch. I created a user with full ...
2
votes
1answer
368 views

Will an Unmanaged Switch Behind a Broadband Router Retransmit Internet Packets?

I currently have a single wireless router near my TV, with a bunch of devices plugged into it. In my current setup, these devices are all somewhere near the router. I'm about to move and in my new ...
1
vote
3answers
195 views

Can I measure PING time between two other computers?

I am investigating a perf issue in the field. Typically, there just isn't enough bandwidth for my app to be speedy. Typically the way it works, is that I ask to Terminal (via VNC or WebEx) into the ...
0
votes
1answer
617 views

Windows 8 with slow internet connection

I upgraded a laptop from Windos 7 to Windows 8. Now there are some problems, but the most annoying is the following network issue: It is just slow and sometimes stops working. With Windows 7 I had ...
2
votes
0answers
347 views

nfsstat authrefrsh almost equal to calls

I mounted a dir from my server through nfs (v3) on my LAN and if I run nfsstat I get # nfsstat -rc Client rpc stats: calls retrans authrefrsh 2527772 0 2527782 Is this ...
3
votes
2answers
148 views

I can only access Google from CentOS

I'm using the CentOS 6.3 Live DVD x64 version; however, I can only access Google and IPs living on my LAN (haven't tested external IPs) in Firefox and Konqueror. Yum can't access mirrors as it claims ...