CentOS 5 :: Vbox Network Speeds Slow?
Feb 17, 2010
have the latest Vbox installed on CentOS 5.4, i have a XP home VM & Server 2003 VM set up. Im using the T1000 Emulated network driver and only getting 100-150mbps throughput when checked with QCheck. I tried the virtio-net (paravirtualized) drivers and only getting 50-90mbps using it, which i found odd. Is there any way i can increase the througput to my VMs? I seen some people on forums talking about getting 300-350mbps, but im no where close to that. When i check throughput to the host (CentOS) i get at least 800 mbps.
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Jun 30, 2011
In my desktop I recently installed one of these network cards. Web pages load pretty quickly, but the signal is only 2 out of 5 bars. On my notebook, I get 4/5 bars from the same location away from my wireless router. I have a 25/25 Verizon FiOS plan and can usually obtain around 30Mbps through Speedtest on my wired machines and notebook. But for some reason, my desktop barely goes over 4Mbps.
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Nov 16, 2010
Trying to watch movies between my systems and I'm getting upload speeds of 6.5 kb/s from my system to the one connected to the tv. I'm running Ubuntu on both machines, tried with VLC and XBMC. Both are running wirelessly but I know that this issue is new, I used to get at least a meg a second on LAN.
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Apr 17, 2011
Whenever I transfer a movie into my 16GB USB flash disk, my whole system becomes windows-like and unusable!
When i drag the file(s) into the USB disk folder, it starts out fine and pretty darn fast (25mb/sec) then slowly decreases until it's unbearably slow (3m/sec) and as a side effect my whole system starts deteriorating. I basically have to wait for the file to finish transferring before i can use my desktop again!
This has been happening with every version since Karmic (all 64bit)- I put up with it because I don't use the USB stick that much.. but lately it's been my go to source for transfering large files to/from work.
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Jun 29, 2010
I am using Ubuntu 10.04 and my internet works fine except for my download speeds. In Windows, downloading the same file, it downloads at around 200kb/s but in Ubuntu, it hovers around 20kb/s and never tops 50kb/s. Any idea how I can fix this because I really don't want to go back to Windows but I may have to.
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Jun 28, 2011
Hey guys, I got a new laptop, so I installed ubuntu 11 on my old laptop. And I have noticed the download speeds have been extremely slow.I have only been getting speeds around 20-60 kbs/sec before I installed ubuntu when it was running windows 7, I was getting around 100-300 kbs/sec. I know its not my internet, because my new laptop runnings windows 7 gets about 250-300.Any suggestions? Its not just in chrome or firefox, its especially slow when downloading packages.
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Dec 14, 2010
I tried using my USB to transfer a 500MB file, the speed came up as 1-130 kb/s. That is pathetic. I should be getting more 25MB/s.
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Apr 10, 2010
I'm finding that the internet speed in Ubuntu 10.04 is over twice as slow as the speeds that I am getting in Windows 7.I've tried disabling IPv6 through Grub and Firefox but it didn't really help much.. anything else I can try?Connecting through wireless at 54 Mbps.
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Mar 13, 2011
Whenever a client tries to download a file from my server via ftp, SAMBA, Teamspeak 3 File Transfer, etc., they report very slow download speeds, around 3-6 kb/s. If I try a ftp file transfer locally, the upload speeds are normal, but I still experience slow download speeds.
My server is connected to a router, which connects to the internet. All other machines connected to that router can upload and download files at normal speeds. It seems to be a server problem, I just don't know where to start.
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Apr 6, 2011
I have read many threads but cannot find a solution on this code...
Now no matter how i transfer if its from HDD to HDD or to SSD i never get more then 18-20MB/sec, i just tried booting to my live CD and was able to transfer with 24-25MB/sec
This is really slow, since the worst (2.0TB) can do a minimum of 30 READ
Anybody got any ideas, this seems to be something that has plagued ubuntu for years, and no i don't want to try other distros, i tried almost all of them a year ago and finally went with ubuntu
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May 15, 2011
I'm using a Netgear WN11v2 wireless USB card, which I've read some people can't even get working with the default Ubuntu wireless driver. It works for me, but it disconnects fairly often, and download speeds are extremely slow, like 12-15 kB/s. I have broadband, and am running Ubuntu 11.04.
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Dec 27, 2010
I'm at the end of my rope here. And the most frustrating part is, I've found many posts all over the web from others who have had similar problems, but they ALL seem to be older distros and those solutions don't work for me. "Find Similar Threads" only yields one thread, and I don't have the file mentioned in the answer (the original poster didn't either).
Computer: AMD 64 Quad core, USB 2.0 on front bus, dual booting Vista and Ubuntu 10.10
Device: New Sansa Clip+ 8GB mp3 player
Problem: When I transfer files to my mp3 player in Ubuntu, I max out at about 150 KiBbps. It's painfully slow - it takes me half an hour to transfer 300 MB worth of albums. I had similar problems with an older player that may have been usb 1.1, but this one is brand new. And when I switched to Vista (first time in months, thankfully), I was able to transfer the same files at upwards of 3 MBps. I know that flash devices often can't write anywhere near the max speed of USB 2.0, but obviously it can do a whole lot better then 150 KiBps!So, same hardware, same files, different OS - the problem must be with my Ubuntu config.
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Nov 4, 2010
I when I burn a dvdrw with K3B, it remains at 1x speed even tough I chose the maximum speed in the dialog(don't know whether this is also the case with dvd-r or cdr since i don't have any with me at the moment). So, I guess there is something wrong. I read that it could have something to do with DMA, Or could it be something else?
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Apr 5, 2010
I am currently staying on a university campus in Taiwan. Internet on Ubuntu Lucid 64bit here is often painfully slow, except for connections to Taiwanese websites. I dual boot with Windows 7, and there is no problem there. For instance, I downloaded the same piece of software (Spideroak) on both Win and Ubuntu, with Ubuntu I had to try repeatedly as the download would not complete, and in the end it took several hours to download. On W7, it took 10 minutes. What is Windows and Ubuntu doing differently?
I tried disabling ipv6 for this session by running sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1, as a number of posts mention improving connection speed that way, but no effect.
I know that websites from Taiwan are working well, because I am getting my Ubuntu updates from a Taiwanese mirror: updates are fast, except for packages in the 'partner' repos (presumably not loaded from the mirror) which take hours to load, if at all. I don't want to depend on Windows for large downloads... (I don't want to depend on Windows for anything).
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May 12, 2010
I'm on Ubuntu 10.04 and I'm having problems with internet speeds on wifi. I have tried the two available networks on my university campus and both of them are very slow with 10.04. I'm not having problems with Windows 7 running on these networks. Although, the wired network works perfectly fine, with normal speeds. I've looked around for help but I could not find anything specific to this problem.
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Aug 4, 2010
I've just managed to access my windows share from Ubuntu but am now getting write speeds (to xp share) of only 9MB/s over my wired network, anyone have any ideas as to why this may be? I've googled but can find no specific answer.
My NIC is:
Ethernet controller: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe (rev 10)
(from lspci) on a Dell studio 1737)
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Jul 29, 2011
I have recently switched to Ubuntu 11.04 64bit from Windows 7. Since installing 11.07 I have experienced random disconnects, slow speeds and just overall poor performance from my ethernet card. Looking into the issue further I noticed that the driver installed for my NIC is "driver=r8169", but the actual NIC card is "product: RTL8111/8168B PCI Express Gigabit Ethernet controller" which I think pretty much says I should be running the 8168 driver.
When I run lsmod I only see "r8169 " installed. How do I go about getting and installing the r8168 driver? I am pretty sure I just need to install this driver and then blacklist the r8169 in blacklist.conf. Any clarification would be great.
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Mar 3, 2010
I have a 4 drive RAID 5 array set up using mdadm. The system is stored on a seperate physical disk outside of the array. When reading from the array its fast but when writing to the array its extremely slow, down to 20MB/Sec compared to 125MB/Sec reading. It does a bit then pauses, then writes a bit more and then pauses again and so on.The test i did was to copy a 5GB file from the RAID to another spare non-raid disk on the system average speed 126MB/s. Copying it back on to the RAID (in another folder) the speed was 20MB/s.The other thing is very slow several KB/s write speed copying from eSATA drive to the RAID.
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May 24, 2010
My wireless network is giving me a fit. Slow transfer speeds and then I lose connection and have to reboot.
greg@greg-computer:~$ /sbin/ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:92 errors:0 dropped:0 overruns:0 frame:0
TX packets:92 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:10214 (10.2 KB) TX bytes:10214 (10.2 KB)
wlan0 Link encap:Ethernet HWaddr 00:16:b6:5a:9c:a5
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:b6ff:fe5a:9ca5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:13085 errors:0 dropped:0 overruns:0 frame:0
TX packets:9600 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15268450 (15.2 MB) TX bytes:2704035 (2.7 MB)
wmaster0 Link encap:UNSPEC HWaddr 00-16-B6-5A-9C-A5-00-00-00-00-00-00-00-00-00-00
UP RUNNING MTU:0 Metric:1
RX packets: 0 errors:0 dropped:0 overruns:0 frame:0
TX packets: 0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes: 0 (0.0 B) TX bytes:0 (0.0 B)
greg@greg-computer:~$ netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 wlan0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0
greg@greg-computer:~$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.1.1
greg@greg-computer:~$
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Jul 14, 2010
I set up software RAID 5 on three 7200rpm Seagate Barracudas (2x80GB, 1x40GB) with 40 GB partitions on the beginning of all three disks.Now, when I do benchmarks using the Disk Utility I get about 52 MB/s read speed on the array. This seems kinda slow considering the average read speed on each individual drive is about 48 MB/s. Also, boot up takes about 30 seconds, which is the same as when I had Ubuntu installed on just one of the 'cudas, without RAID. Now, I am I missing something? Shouldn't the read speed be more that twice as fast since it can read from all three disks?
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Aug 27, 2010
I've been using Ubuntu for a while (though I would not consider myself an "expert") and have just gone back to school. I live on campus and connect to the network through an ethernet cord. On Windows, the download speed is 1 Mb/s by default, but if you go through and configure the network card (turning off the auto-negotiation and setting the speed to 10, duplex full) the download speed will increase to 10 Mb/s, a considerable difference. So, I tried to do this in Ubuntu by opening the terminal and typing the following:
sudo ethtool -s eth0 autoneg off speed 10 duplex full and all of a sudden, my computer isn't connecting to the internet. When I type: sudo ethtool -s eth0 autoneg on it suddenly starts working again.
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Oct 11, 2010
I'm trying to back up my hard drive to a 2 TB WD external so that I can do a clean install of 10.10, however I'm getting tremendously slow write speeds. It hovers around 1.5 MB/s and steadily slows from there. It tells me it will take 150+ hours to transfer 400 GB of data.
I have a AMD quad core processor and 8 gigs of ddr3 ram... USB 2.0... I feel this should go much faster.
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Feb 12, 2016
I'm having a strange problem with data transfers between systems. I have a file server + my desktop. Both are running Debian 8.3. I have a samba share running on the file server and I mount the shares on my desktop on boot via /etc/fstab
When I copy a file using the nautilus from my home folder (on my HDD) on my desktop to the mounted network location, my transfers start out at gigabit speeds 80MB/s-90MB/s for a couple seconds and then drop down to about 8MB/s
But when I terminate the transfer and then use scp to transfer the same file, I get consistent gigabit speed throughout the transfer. I am not sure what is going on.
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Mar 4, 2009
SSH access works fine from a LAN computer, but anything over the internet is extremely slow or times out. We're talking a good 1-2 minutes just to get the login prompt!This is a new installation, I switched from Fedora to CentOS. Previously, SSH from off-network worked perfectly fine with Fedora.What could it be? All other network services on this machine are working properly and at normal speeds, it's just SSH that is not willing to cooperate.
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Oct 31, 2009
Ever since the upgrade to CentOS 5.4 the system boots extremely slow and x-windows is virtually unusable unless the machine is connected to a network. It hangs at netstat, cups, httpd during the boot process. I utilize the operating system to create Asterisk servers and sometimes they are not connected to a network ever.
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Mar 22, 2011
I am trying to setup a virtual machine on virtualbox on slack64 13.1. It's purpose is to be gateway pc, so the vm's are only gonna be here until a VM server will be setup - but that could easily complete after 2 months. The test-phase setup is that this gw () is part of the internal network and I have only attached 1-2 clients that it serves (ie these clients belong to a 2nd level internal network). I do most of the setup by ssh'ing from the INET if (my pc is also part of the internal network and not of the 2nd level one).
As fas as my vm in vbox is concerned, I have setup a bridged connection to eth0 (the LOCAL if), since I'm gonna be running a printer server out of that vm (so NAT'ing would perplex the setup) The problem is that all of a sudden, when virtualbox is running the INET if gets broken, and I lose connection to the gw, from the INET side only! the LOCAL if is still working, the 2nd level clients are working fine. Locally, I can do
[Code]...
I doesn't occur when I do something specific but it is a frequent crash nevertheless. I can push my luck too; from the INET side of the gw I had :-an ssh session open, -an X session open - so that I could have access to the gui of virtualbox application and my running vm. -an ssh tunnel on port 139 in order to bypass the gw's firewall and get access to some samba shares on the gw. I tried 3 times to copy a 2GB iso image from my pc to the gw and all 3 times the INET if broke. Finally, if i disable start up of the virtualbox and restart the machine, the problem doesn't occur.. (i'm 16h without virtualbox and the INET if hasn't broken - the same was true before I started setting up my vm).Has anyone experienced problems with virtualbox and the physical interfaces? Especially when using bridged virtual interfaces?
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Oct 28, 2010
I have managed to compile and load the RaLink drivers for my wifi card and get an internet connection.My problem is that when I do a broadband speed test on using chrome I get about 1.5 Mbs and on my laptop (Windows 7 meh :-( ) its closer to 7Mbs. I was wondering if there are any other settings I can modify or tweak that could potentially change to improve this. or maybe a better way to test the through put of my connection?I downloaded the latest drivers for my device from Ralink and compiled new module, but I get a little confused on what settings to do and where it reads any configuration information from.
Also this may be off topic or thread, if so I apologise, but I am sure there is a quick answer to this and there is a lot of different information out there on where and how I load my new rt3562sta.ko module into the kernel on start up. As currently I am calling insmod on it manually every time I start up then the Network Manager picks it up and connects.
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Nov 11, 2010
Linux beginner, first project is a NAS based on Debian Lenny. Have SMB and AFP running. Hooked to a gigabit network. 8 disk RAID6 with mdadm. Need the NAS to back up our production company's video files.First attempt at back up was very, very slow on smb and afp. Used a Mac disk benchmark app, shows 100+MBps reads, but only .4MBps (as in 400kbps!) writes. Went through office LAN, and also tried just cabling the two machines (MacPro and Debian NAS) directly. Same results. Not sure what the write speeds are internally, as I don't know of any Linux/Debian disk testing software.
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Jun 3, 2010
I installed vbox and windowsXP as guest and fedora13 as host. As discussed in [URL] i have run: Quote: $ VBoxManage sharedfolder add "WinXP" -name "Downloads" -hostpath "/home/rudra/Downloads" --readonly but in guest, as i prompted Quote: net use x: \vboxsvrDownloads it gives error: Systemerror 53 has occured the network path was not found
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Mar 1, 2011
So everytime i try and use the "yum" command. for some reason it doesn't go past this point: "loading mirror speeds from cached host files". i cleaned up the cache and rebuilt the OS again, and im still getting this problem. would this be a problem with my internet connection? I'm using CentOS 5.5.
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