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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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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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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Feb 9, 2010
Is there a way to get a summary of how much bandwidth a given process used on Linux after the process completes? I do not want a monitor, I want something I can look at after the task has completed..
Ideally something like the "time" command or a profiler, but for network usage.
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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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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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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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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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Mar 11, 2010
is there any tools that I can use to get bandwidth speed info between OpenVPN AS and its client?
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Jan 4, 2010
In my household a number of people use the internet. Up to a maximum of 3 wired connections and 2 wireless connections at its peak, all connection through my D-LINK G604T router. The problem is, when one person is downloading or watching ..... or whatever, the others using the internet suffer. I've spent hours configuring QoS on my router, and long story short, no matter how I configure it, it just simply does not work. QoS in no way shape or form limits connection speed (which it says it should). Anyway.
I have a spare computer under my desk, and I'd like to know if I could set this up with a (free) linux distro that limits bandwidth speed per connection. For example, of the 1500 kb/ps (about) my modem pulls, is there a way to limit that to 768 or 512 per connection? so person A can still download, person B can still watch ....., and person C can still play counterstrike with a latency under 100. This would solve many, many arguments in my house I am *fairly* good with computers, but if the distro came with documentation and a GUI that would be awesome.
* TL;DR: *
Is there a linux distro I can load on a spare computer that limits bandwidth per connection, wireless or otherwise, with good documentation?
Failing that is there firmware I can use for my modem (dlink g604t) that would do the same?
Failing that do you know of any good hitmen that would solve my family arguments, ahem, permanently?
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Nov 18, 2010
I created a the class like this for shaping the packets with a specified bandwidth rate.....
tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 1: htb default 15
tc class add dev eth0 parent 1:0 classid 1:1 htb rate 750kbit ceil 750kbit
tc class add dev eth0 parent 1:1 classid 1:3 htb rate 600kbit ceil 750kbit prio 0
For Our Requirement:-
I dont want to specify the bandwidth rate strictly like this rate750kbit ceil 750kbit,based on whatever speed is coming which should allocate the bandwidth rate for particular class...I need one application for finding the upcoming bandwidth & Is any other method is there for specify the bandwidth rate in a classes.
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Jun 15, 2010
since yesterday, this domain has been painful slow and the only fix is removing it from /var/cache/yum/updates/mirrorlist.txt the last straw was about an hour ago, when 10kb/s was the max bandwidth and I had to download perl and glibc * glibc-common it would have taken over an hour. once removed from updates/mirrorlist the other mirrors picked up the slack and I was back in business,
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May 27, 2009
We have a sipmle office network set up that we also use use to connect to the internet, however of late the number of users has increased thus slowing internet access. Bandwidth upgrade is not an option thus i have to do bandwidth shaping on our linux router. The question is how do set the squid configs to allow certain IP's range a certain percentage bandwidtheg 60% and furthe divide the rest. Alternatively how can allow certain IPs to have higher bandwidth access.
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May 3, 2011
How to limit network speed? Is there any apps in Centos can do that?
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Jul 6, 2010
I have a server in a colocation environment where I'm allotted 25Mbps. I'd like to avoid exceeding that for obvious reasons. Is there a way I can set the link speed or at least throttle the bandwidth for all services?
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Dec 18, 2010
I have an external sata dock for hdd that give me a lot of error till linux decided to lower the speed of it to 1.5 then it start work well
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Jun 28, 2010
I am new to Centos and linux in general. I have just got myself a Dell 1950 server with 2x 1T SATA2 hard disks in it. now the server comes with a PERC5i Raid card with 512Mb. Well I put these in raid 0 and the raid card initilzed the disks to 128 writeback and read ahead. When I loaded centos it did not recognize the dell layout so therefore wanted to initalize it again, so I done this as it wanted. Now I created a 80gb boot and o/s partition and a 100gb swap the rest was created into LVM space to run solus vmwear. But I found the raid 0 to be getting extreamly slow read and write speeds.
Example same disks
Desktop PC max 214mb/s windows vista 64
Server with centos 104mb/s
Now I am not sure but I am told that I need to align the o/s with the raid card settings but I have no idea how to do this. How to do this in plain easy step by step instructions. I mean how to calculate it, how to format the disk this way, and what files to edit where if needed. I have spent hours trying to figure out why my raid 0 is slower than a single disk.
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Aug 15, 2010
My Sempron LE-1100 home server (1GB RAM) has run CentOS 5 32-bit happily for years, but I decided to replace its two Seagate 250GB drives (RAID1) with two WD 500GB black drives (RAID1). I decided to do a fresh install and used CentOS 5.5 64-bit this time. Since switching to the 64-bit OS with the new drives, my transfer speed across the LAN has dropped from a reliable 45MB/s to only 18MB/s from other machines to the server, and to 27MB/s from the server to other machines on the LAN. I use gFTP or WinSCP for these transfers (in FTP mode). Prior to installing the new WD drives, I ran the long WD tests on them and they passed, so I don't believe the drives are faulty. I suspect it's more to do with me switching CentOS from i386 to x86_64.
I've got two questions:
1. Is the 64-bit version of CentOS appropriate for a Sempron LE-1100 with 1GB ram, or should I switch back to the i386 version?
2. Is there a reason why switching to the 64-bit OS would negatively impact on transfer speeds? I doubt the new HDDs are faulty...I was expecting them to be faster.
3. Is there anything I can try to improve transfer speeds across the LAN?
According to PHPSysInfo, the network card is "Ethernet controller: nVidia Corporation MCP67 Ethernet".
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Jul 23, 2011
Ubuntu 64bit. The sound system works and plays noises correctly when I test the speakers in sound preferances. The internet BBCi player(Radio) plays sound correctly. Banshee & Rhythmbox try to play music files at double, or more, speed with no sound output. Spotify Linux version also tries to playback at double speed with no sound output. Media Player attempts to play music files at high speed. Media player plays the Video and audio tracks at high speed. VLC Will play the video at normal speed but with no audio.
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Dec 15, 2009
I just installed a new HP DL360 with 32 GB of RAM and a Intel Xeon X5550 which supports speed stepping and turbo mode. I've enabled turbo in the BIOS, but cannot seem to get CentOS 5.4 to make use of either of these features. I've been googling for a solution for a while now, and tried various things, such as installing cpufreq. However, when I type cpufreq-info, I get this:
# cpufreq-info
cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
[code]...
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Dec 20, 2010
i both have the same problem, i'm trying to burn my images at 4 or 8 speed, but ubuntu 10.04 says that the hardware does not support that kind of speed and switch up to 16 speed and more. i know it can burn at low speeds, at least in windows, it is a bit strange that fast burning is okee, and slow not, what can i do to prevent this? i don't wanna burn to much errors on my discs
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Sep 3, 2010
I installed opensuse 11.3 to my laptop.Toshiba L505-13w satellite. core i5 2.27 ghz , 4gb ram, 1gb ati display.I can't measure cpu temperature. I tried "acpi -t" and sensors but nothing happened.I also tried system information widgets from plasma menu.Still I can't see my cpu temperature. Can anyone help me about this problem? I want to see my cpu temp.
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Jan 10, 2010
If a game can't output frame rate, how can i measure it then?
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Dec 22, 2010
anybody knows any tool to measure cpu performance on opensuse box, graphically would be great.
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Jul 9, 2010
I'm looking for a tool for Debian Linux that can measure the synchronisation performance between two desktops.
I'm using RADClock instead of the NTP client to synchronise my desktops.
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Oct 24, 2010
how can I measure time of N processes and N threads and then compare this time to prove that threads are faster than processes. understanding C code, or also for some good way to measure time of N processes and N threads for C.
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Mar 12, 2010
I want to measure the startup time of any GUI app (e.g. firefox) using the time(1) command. However, timing is measured until the app is closed, which has to be done manually by exiting it or clicking X.
How can I get the app to load, terminate immediately and give me the startup time?
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Jun 9, 2009
I have debian sarge distro installed on CF instead of HDD. The problem is once in couple of months, my machine crashes showing IO errors. There is no option to replace CF with a HDD.
Is there any way I can measure the life of a CF card? I mean what parameters do you use to specify the life of a CF card (number of R/Ws etc)? and, how can I measure those parameters?
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Jan 21, 2010
I would like to measure the amount of traffic my webcam is sending. What is the best way to do this? I tried iostat command, but i do not see the webcam traffic back.
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Apr 8, 2011
I want to virtualize some servers but need to figure out what their current IOPS are. I only have CLI access to the servers. Does anyone know how to do this?
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