Ubuntu :: Slow Network Speed When Writing To Server?
Jan 13, 2010
I have just formated and did a fresh install to start all over. I installed Ubuntu 9.1 and everything went fine but the network. The computer serve as a NAS and MediaPlayer. When getting a file from the server, I get a speed of 40-60mb/sec, which are good for a Gigabit network. When I try to put a file in, the speed can't pass more than 1mb/sec and often stop.
Here's the network info:
Code:
vric@XBMC:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:24:8c:a1:eb:55
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::224:8cff:fea1:eb55/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]...
Edit: Looks like it's a Gigabit Problem. I connected the Ubuntu box to my Linksys router which is 10/100 and everything is MUCH faster.
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Oct 21, 2014
I mount a BD-RE in Debian Jessie to write about 20GB of data. But the writing speed is terrible slow. I get a Speed of 250kb/sec.
Are there any options to increase the speed of writing? I don't use packet writing and no wodim, no growisofs, nothing. I just mounted the disk and I use mc (Midnight commander) to copy the data.
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Feb 5, 2010
I am writing a script to do a speed measurement from my ISP's test ftp server. To do this interactively I connect to the server, enter credentials, enable hash and download a test file. The process concludes with something like
Quote:
################################################################
226 Transfer complete.
1048576 bytes received in 2.87 secs (356.6 kB/s)
So I entered the credentials for the server in my .netrc file and created a little bash script as follows
Quote:
#!/bin/bash
cd ~/Desktop
# poiuytrewq is the limit string of the "here" document
[code]...
The script executes as expected EXCEPT that I do not see the statistics at the end of the transfer. It terminates thusly
Quote:
#################################################################################################### ############################################
ken@taylor12:~/Desktop$
I have tried adding another ftp command such as ls to the end of the "here" document (in case the results were clipped by the bye command) but to no avail. The ls result immediately follows the ### - no stats I am at a loss.
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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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Sep 18, 2010
I have a Dell inspiron 640m (1405). I am a reasonably clued in linux user, but I am getting serious networking speed problems. The networking card is an intel 3945ABG When wirelessly connecting with windows XP, everything runs fine and the network connection is fast.
When connecting with any linux distro, the networking speed is abysmally slow, and the connection drops randomly. (the network is recognised and the connection is made however)
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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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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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Sep 18, 2014
I'm experiencing very slow network speeds in one direction (out) on a clean install of debian.
iperf client running on laptop connecting to server with issue:
Code: Select all$ iperf -c 192.168.10.187 -d
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 128 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to 192.168.10.187, TCP port 5001
TCP window size: 129 KByte (default)
------------------------------------------------------------
[ 5] local 192.168.10.131 port 55340 connected with 192.168.10.187 port 5001
[ 6] local 192.168.10.131 port 5001 connected with 192.168.10.187 port 52664
[ ID] Interval Transfer Bandwidth
[ 5] 0.0-10.0 sec 247 MBytes 207 Mbits/sec
[ 6] 0.0-11.5 sec 1.00 MBytes 730 Kbits/sec
I've tried with different cables on the server, no luck. Also note that the laptop gets full speed to speedtest.net as per my internet subscription (75/75 gbit fiber), so the laptop can be ruled out as a problem since it gets more than 75X performance to the internet compared to the local server.
The main purpose of this server is to be a virtualbox host. I've set up one guest system and ran iperf between the host/guest (bridged network). It gives better numbers, still the host -> guest direction is much slower than it should be:
Code: Select allClient connecting to 192.168.10.187, TCP port 5001
TCP window size: 108 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.10.163 port 48573 connected with 192.168.10.187 port 5001
[ 5] local 192.168.10.163 port 5001 connected with 192.168.10.187 port 48856
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.65 GBytes 1.42 Gbits/sec
[CODE]..
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Jan 5, 2011
I have recently migrated my file server over to a HP Microserver. The server has two 1TB disks, in a software RAID-1 array, using MDADM. When I migrated simply moved the mirrored disks over, from the old server Ubuntu 9.10 (server) to the new one 10.04.1 (server).I Have recently noticed that write speed to the RAID array is *VERY* slow. In the order of 1-2MB/s order of magnitude (more info below). Now obviously this is not optimal performance to say the least. I have checked a few things, CPU utilisation is not abnormal (<5%) nor is memory / swap. When I took a disk out and rebuilt the array, with only one disk (tried both) performance was as to be expected (write speed >~70MB/s) The read speed seems to be unaffected however!
I'm tempted to think that there is something funny going on with the storage subsystem, as copying from the single disk to the array is slower than creating a file from /dev/zero to the array using DD..Either way I can't try the array in another computer right now, so I though I was ask to see if people have seen anything like this!At the moment I'm not sure if it is something strange to do with having simply chucked the mirrored array into the new server, perhaps a different version of MDADM? I'm wondering if it's worth backing up and starting from scratch! Anyhow this has really got me scratching my head, and its a bit of a pain! Any help here would be awesome, e-cookies at the ready! Cheers
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Aug 4, 2011
I had a F14 samba server working flawlessly now for a quite time. Unexpectedly about a month ago the write speed slowed down around 64kbit/s and that's really slow. I haven't changed any configs, only updated the server. I've troubleshooted this from many angles:
-It is not a network issue because sftp writes are good.
-It is not a RAID1 issue because write speed from another directory (locally) are good.
So basically samba is the only thing left.
Here's example from smb.conf:
[MyShare]
comment = My share
path = /mnt/RAID_share
writeable = yes
browseable = yes
writelist = +smbuser
Here's a snip from logs today:
[2011/08/04 09:04:27.509273, 1] smbd/server.c:267(remove_child_pid)
Scheduled cleanup of brl and lock database after unclean shutdown
[2011/08/04 09:04:47.526336, 1] smbd/server.c:240(cleanup_timeout_fn)
Cleaning up brl and lock database after unclean shutdown
[2011/08/04 09:17:57.634660, 1] smbd/server.c:267(remove_child_pid)
Scheduled cleanup of brl and lock database after unclean shutdown
[2011/08/04 09:18:17.635196, 1] smbd/server.c:240(cleanup_timeout_fn)
Cleaning up brl and lock database after unclean shutdown .....
There's a restart that is not software related.
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Jul 12, 2010
I am having a problem with my CentOS based server where the hard drive speeds are incredibly slow for both of the hard drives installed -
Code:
Timing cached reads: 16512 MB in 2.00 seconds = 8272.92 MB/sec
Timing buffered disk reads: 12 MB in 3.01 seconds = 3.98 MB/sec
I have looked around but do not understand the complexities of rebuilding kernel etc so would need some assistance. I have checked IO_support and it is set to 0
Code:
Here are the results for hardware installed after a quick lspci -v
Code:
If there are any noticeable incompatibilities here and how I could work to speed this up. I only have SSH access and could possibly get a KVM on it as it is currently locked up in a DataCenter.
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Mar 6, 2010
I have set up a file server (Ubuntu Server Edition) for our lab. People can connect to common Samba file shares from their personal laptops/desktops, which run either Windows Vista or Mac OSX. The guys with OSX have upload/download speeds of ~2 MB/s, while the Vista machines are slogging away at ~200kb/s for downloads and ~400kb/s for uploads. In both cases, the connection are through wired ethernet ports which should function identically. Since the Macs work fine on the same network, I assume this is a Vista issue.
I have tried troubleshooting one of the Vista machines by:
1. Turning off the Remove Differential Compression feature
2. Disabling autotuning following these instructions
3. Adding a registry key following the same link above.
But nothing has improved. Anybody have any advice on addition tweaks to the Vista machine? Is there a chance that this is actually a server-side/samba issue?
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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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Feb 24, 2010
When i try to copy files from my samba server (Ubuntu 9.10) to my windows seven media center, the speed is extremely slow. So slow that is better to download 100mb file from the internet, than from my lan. And on my lan, every card and switch is at 1000 mbps speeds on cat5 cables. And from XP or other linux machine
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Aug 11, 2010
I am running Fedora-13 64 bit on my Dell Laptop, The same Laptop has Windows-7 as well (dual boot system). I have chosen ext3 filesystem while installing fedora. The file transfer speed in Fedora-13 over the network to my network drive comes out to be not more than 5MBPS.Where as in Wndows-7 I am getting the speed of around 10~12 MBPS. Also I found that copying files in USB flash drive is very slow than in Windows-7 . What could be the problem? To add it , I have another Laptop Running Ubuntu-10.04 , which also performs network transfers at 10~12 MBPS. So its just the fedora-13 who has this problem. As far as I remember this was not the case with Fedora-12
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Sep 10, 2010
Does anyone know how to revert network speeds to those attained with openSUSE11.2-64? On openSUSE11.2-64 the reported network download speed was,
max : 420 kB/s
ave : ~ 200 kB/s
After upgrade to openSUSE 11.3-64 the figures dropped to about 25% of the previous values. After upgrade to KDE 4.5 and plasmoid-networkmanagement the initial values did not change but the average value dropped after about 30 seconds to ~ 15 kB/s. Approach so far:
1. The motherboard's (A780GM-LE) build in LAN (Realtek RLT8111DL) was originally detected by openSUSE 11.3 as the Realtek RLT8169 and kernel module r8169 installed. This was replaced by the latest module r8168-8.019.00 from Realtek.
2. After kernel update to Linux 2.6.34.4-0.1-desktop x86_64 the plasmoid-networkmanagement was replace by NetworkManager-kde4. This improved flow with,
max : 140 kB/s
ave : ~ 80 kB/s
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Oct 14, 2010
I am developing a GPS driver which is connected over a high speed UART. The driver of the high speed UART is available and it creates a device node /dev/ttyHS0. Now using the device node, I guess, I will be able to read/write from/to the GPS chip from user space but my aim is to write a GPS driver in the kernel space which would communicate with the high speed UART driver. After some initial study, I think I can either write a line discipline driver or a serio to communicate with the GPS chip firmware through high speed UART driver.
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May 15, 2010
I got a dedicated server ; datacenter told me that I have a 1000 Mbps Public & Private Networks uplink/downlink . How can I check from console if they are saying the true ?
Also , how can I get info about the server network card from console ?
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Jun 11, 2011
I'm on a Dell Inspiron 6000. I installed i8kutils and it works. Fan speed reduces CPU temp from 50C to 44C. A start-up script invokes the i8k module: $ udo /usr/sbin/modprobe i8k force=1 which creates /proc/i8k. The man page for i8kctl is straightforward: a few simple commands to read info from the aforementioned file.So. I know nothing about writing even basic bash scripts. I gave it a go here but I know this is way wrong. Would anyone like to help a guy out? This is my starting point (don't laugh):
Code:
#!/bin/bash
# script to toggle fan speed low/high
[code]...
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May 14, 2010
I am trying to limit bandwidth of certain ip addresses on my server. I have been doing hours of reading and not getting very far... So far I believe the iptables command is
ptables -A PREROUTING -s 178.33.23.44 -t mangle -j MARK --set-mark 2
ptables -A PREROUTING -s 178.33.23.45 -t mangle -j MARK --set-mark 2
ptables -A PREROUTING -s 178.33.23.46 -t mangle -j MARK --set-mark 2
ptables -A PREROUTING -s 178.33.23.47 -t mangle -j MARK --set-mark 2
and now I just need the tc command to read those marks and limit bandwidth, I have a gigabit connection and would like to limit each of these ip addresses to 10mbit in and out.
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Jan 18, 2010
This is a curiosity of mine, and I expect a technical answer, if someone knows it. Why the systems become so irresponsive when doing hard-disk input and output? This happens even if writing is done to a secondary disk where neither the system or the swap are stored.
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May 21, 2010
I have a USB hub on my desk, and also a multi-card reader in the front-panel of the computer (connected to a USB PCI card).
I have found that when I write files to a USB "thumb" drive plugged into the USB hub, or to a card in the multi-card reader (I have tried SD, SDHC, CompactFlash and MMC) the file is written quickly. The progress bar that appears on the screen goes to almost 100%, but then stops...
If I try to unmount the filesystem (either umount on the command line, or MB3 and eject or unmount option) I get a message that the device is busy. Sometimes, this stays busy for three minutes.
The filesystems on these cards are almost always FAT32; they are for digital cameras, media players, or are for exchanging files between home and office (where I use WinXP).
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Mar 12, 2010
I have the problems with transfer speed between samba and Windows XP clients.
Samba server configuration:
Quad Core 6600 CPU.
4 Gb RAM
OpenSUSE 11.2 with kernel "2.6.31.12-0.1-desktop"
Samba - samba-3.5.1-1.1.i586
Test: 4 GB File copying. One file.
Transfer speed from Samba Server to Windows 7 and XP clients:
(Windows clients copy file from Server share -> to local drive)
From Server to Windows 7 client 1:
85-90 Mb/sec
From Server to Windows 7 client 2:
90-100 Mb/sec
From Server to XP1 client 3
75-100 Mb/sec
Transfer speed from Windows 7 and XP clients TO Samba Server:
(client copy file from local drive -> to server Share)
From Server to Windows 7 client 1:
12-20 Mb/sec
From Server to Windows 7 client 2:
30-35 Mb/sec
From Server to Windows XP client 1
20-27 Mb/sec
(Copying file from Windows local drive to Windows remote share)
From Window 7 client 1 TO Windows XP client 1
40-50 Mb/sec
From Window 7 client 2 TO Windows XP client 1
50-60 Mb/sec
Copying file from Windows 7 client 2 share -> TO Windows XP client 1 show me 100-120 Mb/sec speed permanent.
Copying file from Linux hosts to NFS server is stable 50-90
Mb/sec bidirectional.
This part of my smb.conf file
Code:
# version at /usr/share/doc/packages/samba/examples/smb.conf.SUSE if the
# samba-doc package is installed.
# Date: 2009-10-27
[global]
log level = 1
debug level = 0
max log size = 50 .....
I have very slow write speed when copying file from Windows clients to Samba Share. Samba speed is slower than Windows native clients connections ?
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Apr 8, 2010
I am just checking in I know a lil about linux looking to learn more I know forums are the best way to go. I recently installed centos 5.3 on a machine we are going to be using as a squid server. Just a couple quick ?s and just wanted to pick your alls brains. What I am trying to do with the server is use it for caching to speed up our network t but I don't want to go around to all the our customers to setup their browser for proxy. What all is involved with making this server completely transparent. So the end user will does not need to enter in proxy information.
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Sep 27, 2010
Whenever I am busy reading or writing large files, or large sum of files, my computer is unresponsive. Screens are getting greyed-out and I just can sit there and wait until the reading/writing is done.
This is not caused by the CPU which is overstressed because it is not. Look at the attachments and you will see the CPU is used for about 20%. When these pictures were captured the computer was using hellanzb to unrar a long list of rar-files.
When you look at my signature you see the computer is not bad at all, just disk-access is slow. I can transfer files with a maximum speed of 30MB/s. Is that normal or is it very slow? I don't know the numbers. I have 2 SATA disks.
O.S. is Mint 9-Isadora, based on Ubuntu 10.04 and I use the 64-bits version.
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May 20, 2010
I am running Ubuntu 10.04 from a USB key (16GB). Overall I'm pretty fine with it but there are a few problems I am having. It seems to be very slow. In particular, Firefox and Pidgin freeze every now and then, before becoming active again. The same thing also happens for other applications such as Rhythmbox, Gedit, and the terminal. Additionally my start up and shut down times are horrible (worse than when I use Vista and Ubuntu 8.04). I was wondering if there is something with my install or if this is all due to the fact that I am running from a USB. I don't think it's the USB since I ran 8.04 from a USB HDD (55GB) and didn't have any problems with speed.
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Feb 25, 2010
I just installed Ubuntu 9.10, replacing Windows 7.
its running a little slower than I hoped it would, loading movies takes a while, and when i switch to full screen, it takes about 5 seconds to catch up.
im suspicious that my video card driver might not be configured correctly. can anyone tell me what I might need to configure to get things running smoother?
other things on the computer are also running slow, like opening Firefox, it takes a while for the window to appear.
- Athlon 64 x2 5200+
- Gigabyte GA-MA78GM-S2h motherboard
- Radeon HD 3650 512mb pci-e
- 4gb DDR2 800
and I do have ATI catalyst installed
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Apr 25, 2010
I have been trying out Ubuntu One for the past couple of days but find it to be incredibly slow. At first i had put a folder will a large amount of images in the ubuntu one folder. The total size of it was 35Mb, after over 26 hours only 11,5Mb of that had been uploaded.
After looking around some on these forums i saw several comments about it being slow when it is a large amount of files, no matter if the filesize is small or large. I decided to try it out with a larger single file. I erased everything that was in the previous share and then put my testfile of 350Mb in the Ubuntu One folder.
After two hours of waiting i could still not see it on the U1 website so i decided to see how long it would take with dropbox and put a copy of that file in my dropbox folder as well. The file was uploaded correctly to dropbox in just a couple of minutes but it has still not been uploaded to the U1 website even though it has been 4-5 hours since i first put it in my U1 folder.
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Apr 14, 2011
I need to transcript some recordings to a friend of mine. I woule like to have the sound playing slower than usual. Is it possibe on any Ubuntu (L. Lynx) anyway? How?
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Oct 20, 2010
I've been, for some years, an happy user of Highpoint HPT374 based RAID cards, using RAID 5 with decent performances (constantly around 90 MB/sec in read, and 60 MB/sec in write ). Old Athlon mobo , with 2.6.8 kernel. Now the mobo is dead, so I've got an Asrock A330GC (dual proc with 4giga ram), installed Debian with kernel 2.6.26 and moved the controller and disks , and the performances have dropped to a painful 9 MB/sec in write, measured with dd of a huge file (interrupted with kill -USR1 [pidof dd]).
Read performances are still around 90MB/sec, using hdparm -t , repeated many times , figures are constantly around 90MB/sec. I suspect some libata issue , in old kernel the raid was seen as hdb, now is sdb, some driver(s) of the PATA disks may be responsible. I've used the driver, from Highpoint v2.19 , the latest driver is broken (causes kernel oops during format of raid), I've informed Highpoint.
Here some info :
hdparm -i /dev/sdb :
HDIO_GET_IDENTITY failed: invalid argument .
lspci :
00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 01) .....
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