Networking :: Ubuntu VS Windows 4-to-1 Performance?
Mar 10, 2011
Ubuntu V 10.10, vs Windows 2k server. Comparable hardware. From a XP workstation on the same gigabit switch. Share uses Samba.
I start a copy of a 2GB file from the workstation to my Linux share, and then to my W2k server. The copy to the w2k machine finishes in less than 60 seconds, the copy to my Linux machine takes 4 minutes. I am a windows veteran, but a Linux newbie. Are there settings I should look at, or something faster than Samba?
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May 30, 2011
I dual-boot XP and Ubuntu, and I just did a clean install of Ubuntu 11.04 to a freshly formatted hard drive.
However, it put GRUB on the wrong drive (The XP drive, not the Ubuntu drive) and so I had to restore XP's Bootloader then formatted and reinstalled Ubuntu again
(Yes there was probably an easier way to do that, but my way would have been quicker than trying to find out an easier way and I already knew it would work)
The problem now is that my graphics card performance doesn't seem as good on the 2nd install as it did on the first - windows won't animate when minimising etc and there's some lag earing when the login screen comes up.
I installed exactly the same way both times and yet it does something different both times.
How can I fix this problemperformance issue?
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Jul 31, 2010
I just wanted to know if having my laptop set to ondemand, will this affect performance in any way? I realize it increases the clock speed to performance when the CPU is under load, but does the time it take to go from ondemand to performance affect speed? Will there be any noticeable difference between the two setups? I have a dual core intel at 2.2GHz when in performance. When ondemand is set with no load it downclocks to 800Mhz.
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Aug 3, 2010
I'm using Lucid and there is a noticeable drop in performance when using flash under Ubuntu. Video playback appears to be much more choppy than in windows. The driver I'm using according to an xorg config file I made was just "intel." Are there any options I can configure to get it to run more smoothly? The computer itself is a laptop - Toshiba Satellite m45-s331. I tried using gnash and others but they are even worse than the Adobe flash.
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Sep 3, 2010
My DSL is working and my computer is on line but I would like to optimize my connection for better speed. I found a utility for this at speedguide.net but it was written for Windows.
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Aug 1, 2011
I have a WinXP virtual box and have setup a Samba server to have it use directly a couple of directories on the Linux side. The Samba performance is definitely better than the built-in shared folders of the virtualbox, but there is nothing to write home about either: transfer seem to top at around 3Mbyte/sec.
The machine is a laptop (Core i5 CPU (M520@2.40GHz) and a 7200RPM HDD) running Kubuntu 10.04.The Samba share uses a dedicated "host-only" network adapter. There is an iptable-based firewall to which i added the required 4 statements to let the Netbios traffic go through (without them nothing works...)So, given the hardware, are the 3MB/s a decent figure? And if not, what should I aceeive, and where can I look improve on the current numbers?
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Oct 15, 2010
I installed Ubuntu 10.10 today Netbook Edition on the Asus Eee PC 1015PED. Specifications for Asus Eee PC 1015PED: Atom 455, 1.66 GHz, 1Gb ram, 250Gb drive, Bluetooth 3.0, 0.3 megapixel webcam, Gigabit Ethernet, WSVGA (1024x600), sound card compatible with the HD audio connector, d-dub, three USB 2.0 ports, 6-cell - lithium Ion - 4400mAh, WiFi 802.11 b/g/n.
solve the problem or an indication of the package to install. tutorial under the title, which services to disable to boost performance. first place to help you connect to the Internet. especially to the netbook'a - Asus Eee PC 1015PED. I updated everything on connection via cable. Detects the connection, but when it connects after a while.. "Wireless - Network Disconnected".
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Jan 12, 2011
I would like to re-raise this topic that I have seen on other discussion boards but seems to be going no where.I have been using Ubuntu for many years now having switched from other distributions. All my machines ran some version of Ubuntu, until just recently. I upgraded my personal HP TX2500 from 9.04 to 10.04. No problems. After 10.10 had been out for a while I upgraded again. The wireless would drop when busy/(signal slightly weakened) etc. It would not function again unless the wifi module was reloaded.
Then I installed 10.10 on my HP NC6400 the same thing occured. I installed Ubuntu 10.04 instead. It seemed no better. After some Googling, it seemed I was not alone. I tried all the suggestions I could find and none of them worked. One suggestion was to install Fedora 14. This works perfectly on the nc6400. The HP TX2500 has been reinstalled back with 10.04 where the wireless seems ok and I assume I am stuck there for a while.
Now my question is why would the networking behave this way for Ubuntu 10.10 (10.04 as well on the NC6400) but wireless on Fedora 14 is perfect (I mean really good! Better than either Ubuntu 10.04 or 10.10 on any of my laptops) on the NC6400. I am hoping that we can find a way to fix this, otherwise I will likely have to drop Ubuntu completely because I do not have an upgrade path for laptops. There must be many other users in the same position who are not discussing it and just rebooting each time this occurs. This must give a negative perception of otherwise great software.
Systems running Linux
Dell D610
HP TX2500
HP NC6400
IBM T20
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Mar 29, 2011
I installed a new PCI wireless card (Broadcom Corporation BCM4306 802.11b/g Wireless LAN) today I got it to work but, I am not getting the right download speeds before I was downloading at 700kb/s and 1mb/s but now its downloading at speeds like 200kb/s 250 being the highest I've seen it all night
Some more specs:
01:0a.0 Network controller [0280]: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller [14e4:4320] (rev 02)
And I do have the Restricted driver installed and activated, also I was reading that restricted drivers slows performance, is that true?
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Aug 5, 2011
I have ubuntu lucid running on Dell 230 PC, linksys WPN600 N wireless PCI network card connecting to a Cisco E3000 dual channel router.
Kernel: 2.6.32-33-generic
Installed Ralink driver v2.4.0.0
iwconfig shows that the bit rate is 130Mb/s and link quality is 98/100. I'm using the wcid network manager instead of defaul gnome one. I'm getting lots of packet loss and performance is very bad. The connection is practically unusable. I've tried installing the compat wireless backport package but that did not work at all.
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Dec 26, 2009
I have fedora 12 and since I started using firefox I noticed that it performs very slow. Slow when opening, when displaying information etc..I thought that there was something wrong with my wireless device but I installed opera and it works very fast. The strange thing is that before that I installed google chrome and also worked very slow for me.
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May 29, 2011
I am enabling GSO via setting dev->features |= NETIF_F_GSO;I am observing that after I enable GSO my FTP get performance reduces.setup:ftp client running on a PC (IPv4 mode)connected across Ethernet interface.Any thought on the possible issues. Note: IPv6 is enabled. System running ftp server is in running 2.6.28 Linux.
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Dec 10, 2010
I have been ask to provide a network monitoring utility that can create network benchmarks for applications to graphically see how it performs.
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Jan 16, 2011
What does having have more ram and flash memory make a router better then another one?
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Jan 8, 2011
I wrote a script which sends the server,files from /proc/ like dev,netstat,loadavg etc of a client. i want to calculate the network load and the overall cpu performance of the client using the information from the files.I donot know how to calculate that as i have too many values in those. which values will be useful and how to calculate?
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Mar 10, 2011
Upgraded a school network from FastEthernet to GigabitEthernet. Broke the network up into VLANs. Discovered that the router (Cisco 2821) could only route between the VLANs at around 400Mb/s. Tested out some layer three switches. They work very nicely, but are more than we need. So I started putting some spare equipment we had together as a Linux router.
Result: Underwhelmed. The machine has two Intel GigE interfaces. With the machine configured to route between two test VLANs I get about 855Mb/s with a single interface (all VLANs trunked over the single interface). That's about what I'd expect. Maybe a little low. With the two interfaces bonded, I get about the same.
For testing, I set up eight Windows machines, four on each VLAN. The Linux router is the only machine that can route between the two VLANs. I used Iperf to generate traffic and measure throughput between pairs of machines. Two machines on the same VLAN get about 300Mb/s between themselves. With the four machines organized into cross-VLAN pairs, I get about 855Mb/s total throughput on a single interface and very slightly more with two interfaces bonded.
The Linux router has an Intel Xeon E5506 CPU running at 2.13GHz and these are Intel GigE interfaces (built-in). I would expect to get a large boost by adding the second interface. I've confirmed that bonding is working (by pulling either of the cables and watching everything continue to function).
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May 19, 2011
Now doing some research about performance of Linux switch. I'll start with basic structure of my system: PC1 is connected to PC2 - both have 1 NIC so not much to add.PC2 eth0 is divided in VLAN`s as far as maximum of 4094. Every VLAN has it's own switch (bridge). On PC1 when I run a test I just make VLAN/configure IP address and stream data to IP that's configured for that bridge on PC2.But now I want to add one more interface to each bridge, so I could stream from PC1 through bridge to Virtual interface (just an endpoint out of bridge). I could possibly add one more computer, physical interface to PC1 and make it work, but is there any way to make this work with virtual interfaces, like tun or something? Making just a simple tun interface and adding it to bridge, as you understand, doesn't do the trick, I need some kind of other endpoint that /virtually/ connects to tun interface. Maybe someone has made some kind of script or something? Using Iperf for my tests.
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Jan 29, 2009
ok, we had to move one of our databases due to failing hardware. This box is newer than the old but it's just dog slow. 1st I thought it was mysql but now I am realizing it's the network. As a test, I tried copying a remote file to that box and the old server (located at the same co-lo, same provider), same switch, etc.Here are the results;
Old server:
access_log.1 100% 4192KB 1.4MB/s 00:03
New Server:
access_log.1 100% 4192KB 72.3KB/s 00:58
So now I see why people were complaining about webpage load times, etc. I can't figure out why the network latency. I looked around a bit, see below for some things, I thought mtu, nic speed, etc.
mii-tool shows;
eth0: 100 Mbit, full duplex, link ok
eth1: 100 Mbit, full duplex, link ok[code].....
Are there other things I can type to test or provide more feedback somehow to get more information.
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Apr 29, 2010
My wireless was connecting fine, but it was impossible to browse with. So, after searching around for a while I found a thread where it said to enter this and reboot.
#echo "net.ipv4.tcp_moderate_rcvbuf=0" >> /etc/sysctl.conf
#echo "net.ipv4.tcp_default_win_scale=0" >> /etc/sysctl.conf
But after entering that and re booting, now I cant even connect to the wireless. It says connecting but times out.
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Oct 15, 2010
I'm configuring a CentOS 5.5 2.6.18-194.17.1.el5.centos.plus server in order to have multiple VirtualMachines in it. The throughput of the machine is at least 300KBps (yes KB), I configured two web servers one on the virtual machine and the other in the physical machine, the difference was: 300bps-3 KBps on the virtual machine, 230KBps on the physical machine.
The configuration is as follows:
Code:
If I attach the public ip address to the virtual machine this gets smoothly.
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Sep 17, 2009
I have a WRT610N router which has an inbuilt media server. The cool thing is, you get 2 wireless networks, so you can label one as abg & one as N. I've been ftp'ing files from the media server, which is a really good way of testing wireless performance. I was just wondering what sort of performance you should see from 54Mbps & N ?
Under FC11 I see anything between 1500KB/sec download & 2400KB/sec download when it's on the N band (5GHZ) but reports 54Mbps connection. My mac on the other hand pulls around 3000KB/sec transfer on the N band.
I was just wondering what sort of "standard" performance I should expect ? I'm fairly sure that linux latest kernel, the 5GHZ router & Intel Corporation PRO/Wireless 4965 are not connecting N band. Searches on the news groups shows people asking what G band, N band is, but no ball park, expect these figuers.
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Jan 27, 2009
The internal network is behind nat done by the PC Router.The TP Link is recieving wireless signal from outdoors and it has switching and basic routing capabilities. I'm using the PC router for better routing options.PC Router (or R for short) is a triple-booting machine - Linux, FreeBSD and Windows. It has two lan cards - external (ext_if) - 100Mbps Realtek 8139 and internal (int_if) - 1Gbps integrated Realtek 8169.The problem is that all traffic from R to the network is slow - about 5-20K, while the traffic in the oppoiste direction is all right - about 10MB that is fine for 100Mbps cables, NICs and switches. The problem persist no matter the OS the pc R is running.I've tried some debugging on the situation as follows:
- put another PC at the place of R - everything is fine. That exclude the possibility of damaged cables, RJ-45s, switches and etc.
- connected both of the NICs to the Internet while the internal network is being disconnected and they both work fine (no delays)
- traffic shaping is not running
- there is nothing in firewalls except NATing the internal network (and it is working fine). Actually these firewall rules have been operational for more than months and everything was fine untill a week or two ago.
- changed the internal NIC with another
- connected the internal network directly to the TP and all of the PCs are getting good network performance. Then connected the R machine to the TP as well and there was good performance between the internal network PCs and R.
- R has good performance to the TP. In fact everything has good performance directly to the TP (when not connecting trough R).
- the problem persist only between R and machines from the internal network.
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Dec 22, 2010
I have a fresh install of CentOS 5.5. I am trying to browse to the Windows machines on my network (Places > Network Servers > Windows Network), but I get a blank window. I am able to ping the Windows machines using their IP address, but not by their name. What do I need to do to be able to see the Windows machines and also to connect to shared folders on these machines? So far I have tried starting SMB (via System > Administration > Server Settings > Services). I have also tried changing my smb workgroup to "WORKGROUP" (the default was mygroup which did not match my Windows machines.
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Sep 5, 2010
I have recently set up an ubuntu installation on an old PC. After some fiddling with both it, and the windows 7 machine, I have managed to share all of my drives. However, when attempting to access them from ubuntu, only 2 of the 4 hard disk shares will mount, with the other 2 failing with a Unable to mount location, failed to mount windows share error message.
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Mar 9, 2011
Ive managed to install samba, I've shared a folder. I can access from a Windows 7 machine via \ubuntupublic. I can put files in the folder form the ubuntu machine and edit them on the windows box. I can put files in the folder/share from the Windows box but then I cannot edit them on the Ubuntu machine (they are read only and have a "Lock" over them). I can fix this by going to the properties of the file/folder in Windows and manually assigning "Everybody" full control (then the lock disappears and all is well.) I want read/write access to all the folders contents from both machines all the time (security is NOT a concern I WANT the permissions wide open) what am I doing wrong?
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Feb 8, 2010
What I did to configure the network:
1) remove network manager
2) make ip address entries in /etc/network/interfaces and /etc/resolve.conf files.
when I do networking restart it is showing
"reconfiguring network" [OK].
However Google.com is an unknown host. I am getting the feeling I am missing something. The network adapter is showing green led . Does it have something to do with the microsoft networking that's running in my office?
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May 28, 2010
I'm havng some seriously bad performance why i try to do any work on ubuntu.. big issue..i think it's in ubuntu 10.04 and need's some serious work!here's my list.
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anyone experiecing the same issues? runnin ubuntu 10.04 64bit fully updated on dual 2.4 9700m 720gigs 4gig ram... i think it's fast enough for ubuntu or simple browsing..
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Apr 11, 2011
I am currently using the 32 bit version of Ubuntu on my 64 bit laptop. My question is, does using a 32 bit version on said hardware reduce its performance (i.e will battery life be reduced, system be under more load, etc.)?
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Jan 16, 2010
Why does flash perform so badly in fullscreen mode but not when out of it? [URL]... that is a 1080p flash video that runs completely smoothly for me when not in fullscreen mode, but after entering it the frame rate drops significantly. Am I the only one affected by this? Is there a way to fix this?
My computer is 64 bit and is running flash 10.42
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Feb 8, 2010
i'm trying to run ubuntu 8.10 intrepid ibex on an old hand-me-down laptop that i got from a family member, and i've noticed that the performance is actually much worse than it was on windows xp professional (32-bit).
first of all let me give you my specs:
ibm thinkpad r32
intel mobile pentium 4-m 2.0 ghz
ati radeon mobility m6 (i think this is actually the mobility radeon 7000 igp) with 16mb ram
256 mb ram (pc-2100)
i understand that these are very low performance specs, but it feels like the computer is running very sluggishly even for those specs. the computer ran just fine in windows xp, but is extremely sluggish in ubuntu. it seems like it detected all the hardware just fine, but i feel like it may not be utilizing the cpu and/or video to the extent that it should be. a couple of places where it really seems to struggle is when first opening new programs, viewing flash intensive web 2.0 type webpages (i.e. videos), and listening to music/podcasts (with rhythmbox).
it seems like rhythmbox really kills my performance more than anything else, but the performance is poor all around compared to xp, and i feel like that shouldn't be the case. like i said, i understand that the specs are poor, but it feels like it's not even living up to those specs. i know that 8.10 is old and outdated now, but it's what i had laying around and i figured that it might perform better on this old deprecated laptop than 9.10 would anyway. am i wrong in this assumption? would 9.10 perform better for me?
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