Ubuntu Networking :: Measure Network Speed Between Two Servers

Jan 18, 2010

Any command line tool to measure the network speed between my two linux servers without taking disk speed into account? My network is supposed to be 100Mb, but it doesn't feel like that so I wonder where the bottleneck is. The numbers that I see doesn't correlate well to that. So I'd like to know the speed network card to network card.

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Networking :: Tools To Measure Internet Speed ?

Aug 5, 2010

Is there some software to measure Internet speed and show where the slowest element is?

I use OpenSuse 11.1 and KDE although Im happy to set up a user using Gnome.

Just recently my browsing speed dropped to almost nothing ...I used [url] to measure my speed and it gave a very slow result 30kb/sec ....usually its around 3000kb/sec. I rang my ISP's helpdesk and they told me my ADSL connection was fine. Two minutes later it was back to normal!

I know the internet speed varies from time to time ...I guess depending on how many are using it and for what. But..I suspect that my ISP was restricting my speed and Im looking for a tool that will tell me which part of the internet is the "slowest"

I would also welcome pointers to information about internet speed and what causes it to change.

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Networking :: Install Mrtg On A Client Computer In Network And Measure The Network's Router Traffic

Sep 4, 2009

I wanted to know if i can install mrtg on a client computer in network and measure the network's router traffic.i know that it can be installed on the server.

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Hardware :: Any Way To Measure USB Drive Speed?

May 30, 2011

Any good way to measure USB drive speed in a repeatable and effective way? I know that what I "copy" and how I "copy" and the filesystem in use make a difference in anything I try to measure. I know that I can:choose some file or folder tree use various tools (cp, tar, rsync, etc) to move the data use time command to collect details do this more than once.

One "benchmark" I've used in the past was to create a source tree for some application and use make clean; time make in that tree. Lots of I/O of various sorts and some computation and very repeatable. Since I'm not seeking a gold standard benchmark, I can do what I like, but I'd like to do something (a)meaningful in general for myself and others, and (b)avoid inventing what probably already exists.

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CentOS 5 :: How To Measure Bandwidth Speed

Dec 19, 2010

I am wondering if there is a tool that measures bandwidth speed right from the shell on CentOS 5.4/5.5.

I am looking for a speed tool rather than go ahead and download a large file and time it sort of advice.

Please let me know if this is available.

P.S. It is to measure the internet speed from the ISP and not the LAN speed.

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General :: Measure File Transfer Speed?

Jun 15, 2010

I have one Linux server equipped with WiFi . I want to measure data rate speed on this connection . Is there any utility on my Linux that can measure data speed on one specific Ethernet connection when transferring large size files through WiFi connection?

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Networking :: Software That Measure QoS Of Network Traffic?

Jan 31, 2010

I need software that measure the QoS of network traffic , Any recommend program?

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Networking :: Software That Measure The QoS Of Network Traffic

Jan 31, 2010

I need software that measure the QoS of network traffic , Any recommend program??

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Ubuntu Servers :: Can't Get Near Theoretical Network Maximum Speed

Mar 10, 2010

With three 1.5TB, 7200RPM drives in RAID0, they thrash. And yet the network out, 4 gigabit ports LAG'd together to create a single 4 gigabit connection, can't even push a single gigabit a second.

Here's what I've done so far:

I've enabled jumbo frames on the bond: ifconfig bond0 mtu 9000

Tweaked SAMBA performance:

Tweaked hdparm:

I haven't enabled jumbo frames on the switch but I'm almost sure that won't help me much after trying all this.

I'm running out of ideas here guys. The clients connected are pulling down images in both Ghost and WIM (ImageX) format. Large files too, upwards of 12 gigabytes.

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Ubuntu Servers :: How To Measure - MYSQL Performance

Mar 9, 2011

Recently set up a webserver at Linode. I've been reading alot about tuning the mysql, but other than hitting web pages and seeing how fast they load, how do I tell how well my tuning is working?

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Ubuntu Servers :: How To Measure Performance On A Computer

Aug 3, 2011

how do you measure performance on a computer?I know there are benchmark sites, they do give a general guidance in selection. However, I want to learn how to build a cluster from commodity parts and want to make sure it is equivalent to a specific server in performance.I know clustering is a bit abstract and it will be difficult to measure direct performance and compare it to one specific board. I am fine with that

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Ubuntu Networking :: Network Transfer Speed Only 11.3Mb/s

Jun 19, 2011

I just noticed that files are transferring between my two computers at no more than 11.3Mb/s no matter what I do.

I regularly use sshfs to mount a drive on my main computer. But after noticing a dismal speed of 10Mb/s when copying a file, I thought maybe sshfs is slow. So I tried scp, and I'm getting 11.3Mb/s with scp. Using the blowfish cypher gave me no change to this, still exactly 11.3Mb/s.

I have a Gigabit network except for the cable, which is a 10meter, 100Mb/s cable.
I have a custom modified sysctl.conf file which I'll post here if needed.

Is there anything I can do about this pathetic speed ? Maybe a modification to my ssh config ? sysctl ? anything ?

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Ubuntu Networking :: View Network Connection Speed?

Nov 12, 2010

how to view my network connection speed. EG: 10/100/100 mbit. I searched and searched with no luck, I tried ethtool as well as mii-tool.

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Networking :: Way To Limit Download Speed On A Network

May 10, 2011

I have a linux debian on a network connected to a router through a ethernet cord. My linux is hogging the network speed and the users of the other computers on the network aren't very happy. Is there a way to limit the download speed on only my computer?

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Ubuntu Networking :: Slow Copy Speed To Network Volume

May 4, 2011

In mi fstab file I mount a smb file server at boot. The code is:
//<ip address>/data /home/eng-2/NAS smbfs credentials=/home/eng-2/.smbcredentials,dir_mode=0775,gid=1000,uid=1000 0 0
Transfer rate to the server is approx 100 KB/s
Whilst transfer rate from the server 16 MB/s
If I mount it from Places>connect to server. Both to and from speeds are 16 MB/s. Why is it so slow when mounted through fstab?

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Fedora Networking :: Network Speed Depends On Installation?

Jul 27, 2011

probably this is the most idiotic question and probably i know the answer. But I want to get confirmed. Is it anyway possible that my mobile broadband speed is slow because of my installation is wrong? actually, I formatted my machine and make it dual-boot. After that my mobile-broadband speed is horrible slow. I installed (a)kmod-wl and as dependency, broadcom-wl but my lspci only shows intel network manager.

Code:
$ lspci|grep Network
17:03:00.0 Network controller: Intel Corporation Device 008a (rev 34)

can this be related or just coincidence?

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Networking :: Installed Dnsmasq To Speed Up Dns Querry For My Network

Dec 20, 2010

I installed dnsmasq to speed up dns querry for my network. i didn't really change any thing in my dnsmasq.conf file. i only just put my upstream dns addresses in resolv.conf. i have dchp running and configured to issue the ip address of the system running dnsmasq as dns ip to the dhcp clients. But i have noticed that if i do ipconfig /all on my windows clients, instead of the dnsmasq server ip showing, i still see the dns ip of my upstream provider. by this, iam assuming that the client are not using the cache even though the service is running on the server.

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Networking :: Network Transfer Speed Over Time Mathematical

Jan 26, 2010

I was wondering how to calculate some problems related to network transfer speed. If someone can show me a function to calculate network transfer speed over time, I would appreciate it.I'm in the midst of transferring 1.3TB of data to a network storage system. By looking at the stats, 4.6GB file transferred out in 6 min and 30 seconds. How long would it take to transfer 1.3TB of data?

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Ubuntu Networking :: Slow Network Speed / High Packet Loss

Apr 22, 2010

I have problems with my network speed when i ping my proxy server I end up getting a high packet loss generally more than 30%.I have tried to use various network monitoring softwares like etherape, wireshark, tcpdump but I am not able to get to the bottom of the problem.basically I am trying to find out where the lost packets are going.

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Ubuntu Networking :: 10.04 Lucid Lynx Network WiFi Slow Speed

May 18, 2010

A lot of people have the problem to find themselves with Lucid Lynx 10.04 and experience massive issues when connecting to wireless - me too. As a service, here some relevant links which promise relief:

[code]...

I tried all of them, and none reliably worked. Every solution which required re-association wtih the AP helped for some time, but nothing helped for long. First, don't let yourself fool by the disable IPv6 trap - while it is "enabled" it is acutally not used by Lucid! I have a clean install of Kubuntu 10.04 on an AMD64 Laptop with Broadcom STA driver: 03:00.0 Network controller: Broadcom Corporation BCM4328 802.11a/b/g/n (rev 03) However I can reliably stabilize my connection for some time either by manually disabling WiFi with the hardware switch or disabling WiFi by software means and re-activating. This brings speed at par with Kubuntu 9.10 until some time. Can anybody confirm this behaviour?

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Ubuntu Networking :: Wired Network Connection Lowers Link Speed Repeatedly

Apr 1, 2011

I believe I'm running Kubuntu 10.04, but don't quote me on that. Here's the version string from dmesg. Linux version 2.6.32-31-generic (buildd@crested) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #60-Ubuntu SMP Thu Mar 17 22:15:39 UTC 2011 (Ubuntu 2.6.32-31.60-generic 2.6.32.32+drm33.14 I have an emergent problem with my wired ethernet resetting the connection on a frequent basis. When it resets it re-negotiates the link speed and I often end up with a 10Mb/s link and on some occasions a 100Mb/s. The configured speed for the link is 1000Mb/s full duplex using a preup ethtool command. I do not use NetworkManager but have the interface configured in /etc/network/interfaces.

[code]....

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Fedora Networking :: Unknown Network Activity Kills Internet Speed

Jul 13, 2009

I upgraded from Fedora 10 to Fedora 11 last night in response to a pop up window. When I rebooted after the upgrade my wife immediately complained about the internet not working. Actually the connection up was working but Fedora 11 upgrade had made it slow almost to a stop There are two XP machines the network behind a local D-Link wireless router with Comcast high speed internet. When I disable networking on the Fedora machine the internet connection immediately returns to normal on the other two machines. Also there is a second or two period after enabling networking for a quick upload or download before the connection clogs.I checked the system monitor network history and found that there is a constant networking send rate of just under 180 kb/s in the background.This occurs even when the browser, email client, and automatic backup are off and the only process showing significant CPU use in the system monitor is the monitor itself.

I tried netstat but there were so many /tmp/orbit entries that I could not scroll up to the top of the listing. Is this normal. If so, does anyone know the netstat command options to just see connections with sent packets. I also tried ifconfig -a. This shows no Rx packets at all, and no TX packets except on eth0, The total etho TX packets matches t,he reported by the system monitor, and in the monitor you can watch the total accumulate in approx 180 kb/sec increments. I don't understand why 180kb/sec TX would make a dramatic difference in internet network internet speed. Comcast reports upload speeds in megabytes. I need to be able to use the net in Federa, but I am also curious to learn what is the caused the problem.

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Fedora Networking :: Test Network Card Through Output And Speed Between Linux And Windows?

Jan 20, 2011

I need to test network card throughput and speed between two computers, one is running Fedora and other running Windows 7. Usually I would use netperf to perform this task, however I can't find Windows build of netperf. Can anyone recommend any network evaluation tool, similar to netperf (clien/server) which has both Windows and Linux versions.

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Software :: Change Network Charts Unit Of Measure In Gkrellm From Bytes / Sec To Bits / Sec?

Feb 10, 2011

Does anyone know of a way to change the network charts unit of measure in Gkrellm from bytes/sec to bits/sec? I'm not finding any method to do so in the config options.

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Ubuntu Networking :: How To Measure Volume Of Internet Use

Jan 29, 2010

I want to measure how much Internet I use on a day-to-day basis. I don't mean how much time I spend on the Internet. I mean volume of data; i.e. how many Mb of data I download and upload, including everything: surfing, on-line backups, emails, IM, VOIP, updates, streaming, and so forth. I don't need this broken down by type (though it would be nice); I just need totals per 24 hour periods. How can I get these statistics? Do I need to install a special program?

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Networking :: How To Measure And Report Net Bandwidth Use

Feb 6, 2011

I'm looking for some utility that will measure my network bandwidth use and report it in ways that are human readable. Specifically, I want something that I can use to stay ahead of my mobile broadband plan's usage metering.

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Networking :: Need Bandwidth Traffic Measure By IP

May 25, 2011

I have a proxy/gateway server with X routable addresses and X clients, each connecting to his corresponding address from my server. All clients have public static IP's. I need something like the output of 'pktstat -1 -w 10 -B -i eth0 -n -P -t -T' but that would indicate the biggest'traffic hogs' from my clients.

Something like:
67.78.89.90 <-> my.public.ip.1 1344KB/s up 289KB/s down
56.67.78.89 <-> my.public.ip.2 1203KB/s up 200KB/s down

With this output, I can limit the traffic passing thru my server using a bandwidth limiter on my.public.ip.1 and my.public.ip.2. Pktstat only shows the total traffic from-to the respective IP's gathered in a 10second interval (-w 10). I would like something that would indicate the bandwidth per ip more precisely, I don't want to divide the total traffic by 10 (seconds).
Please note that this will go in a cron job. The interactive tools like iftop are useless (I would like something like a text screenshot of iftop from which I could extract the needed information).

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OpenSUSE Network :: Any Good Tweaks To Speed Up Network

Apr 12, 2011

Can anyone suggest any good tweaks to speed up network please?

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OpenSUSE Network :: Method Of Selecting Network Speed On Set Up?

May 27, 2011

Is there any method of selecting a network speed on my set up? It is capable of running at 100mb/sec but have the feeling that it isn't. Plug in vista on a lap top and no problems at all. It's also noticeably quicker. I assume that a straight install does set up bi directional and 100mb/sec?

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OpenSUSE Network :: FTP Network Speed Using 11.4 Falls Down To 15 MiB/s After 30 Seconds At 90 MiB/s

Jun 8, 2011

I'm facing an odd problem with a fresh install of OpenSuse 11.4 on a Dell PE-2950, using NIC Broadcom BCM5708C (rev 12) NetXtream II. Driver's are up to date. I'd installed vsftpd and configure it. I can connect from anywhere in the network where I setup this Server. The odd problem is that when I'm sending a big file (5.5 GiB for example), from another PE-2950 server (Windows Server 2003 64 bits R2) with another BCM5708C nic, the speed of the transfer starts at 90 MiB/s approx. but after 30 seconds , it drops to 15 MiB/s and never raise again. Driver's are up to date too.

However, from another Server in the network, a Dell R710 with SLES 10 SP3, the transfer speed is at 90-100-110 MiB/s all the time. The switch is a HP Procurve 2910al-24G, with all ports at gigabit speed. I'd tried with different FTP clients in Windows: WinSCP and the Windows's ftp client, but the result is the same: speed falls down after 30 seconds approx. using the Windows-Box.

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