Ubuntu :: File Transfer Speed Decreasing After A While

Mar 6, 2011

what might cause a file transfer to start out fast (11-12 mb/sec) and then drop to about 1 mb/sec after having downloaded about 2 gb? This is what happens when I download files from my old fit-pc 1.0 (a small mini PC with 256 MB/RAM, an AMD Geode processor, and a 100 mbps network card) via ftp over my local network. Is it some buffer filling up?

I was directed to some article about "bufferbloat" earlier [URL], but I did not get any solution from that unfortunately. I have tried increasing the server's TCP buffer using these instructions: [URL] , but it does not make any difference. By the way, I am running Ubuntu Server 10.10 on the fit-pc and Ubuntu 10.10 desktop on the connecting client (which is just a normal Core 2 duo, 4 gb ram computer).

UPDATE: I should add that things were working fine when I was using ubuntu 7.10, but are not now that I have installed 10.10...

UPDATE 2: I just found out this is ONLY a propblem when transferring files to ubuntu. If I use winscp from Windows 7, the transfer speeds are fine...

UPDATE 3: It seemed it was gFTP that was the culprit. Transferring the files using filezilla instead in Ubuntu yields an excellent rate of 11.8 MB/sec. Anyone have an idea what might be wrong with gFTP?

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Ubuntu :: Speed Of Scp File Transfer?

May 19, 2011

I have two machines running open vpn connected trough a 8 port Gigabit switch (Tp-link TL-SG1008D). The problem is when I try to transfer a file the transfer starts at 13 mb/s and drops to 300kb/s. When I replaced the ram on the two machines and restarted the transfer the speed was 13mb/s constant. How does changing the ram makes such differences (at the first transfer they had 512mb at the second transfer the machines had only 128mb) ? Os Ubuntu Server 10.04.2 LTS

PS :Tried with 256 ram and the problem persists...
Machines: two hp d530

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Ubuntu :: File Transfer Speed Shown In Bytes/sec ?

Apr 20, 2010

I have few different usb cards and socets , some of them i have really hotwired.. and i would like to find out where to keep my usb-hdd . few months ago i would use "total commander" it would show .. copying-444Kb/s but these times are over...

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Networking :: File Transfer Speed Too Slow ?

Oct 14, 2009

We have a server and we have instales an Open suse 10.3 on it. We created a Samba server also. Made to share folder, that we acces from network from other computers that have xp.

The problem is if we try to copy from server it is very slow only 100-300kb/s. The strange thing is that if i copy 1 file then its slow but if i start to copy another one the speed gos up to 10-15mb/s. Evry time i want to copy somethin or install from that server i need to start another copy. If i copy from a comp to that server the speed is normal only if i copy from server its slow.

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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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General :: Test PC To PC File Transfer Speed

Jul 7, 2011

I want a program that can be installed in two pc and measure speed of transfering files from one to another or any data measured in Mega bit

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Slackware :: NFS - How To Speed Up Large File/folder Transfer - Write - Speeds?

Dec 13, 2010

About NFS.

Server:

Client(s):

Code:

I have followed Robbie Workmans' HowTo [url]

Reading and writing works absolutely fine with small files but large files are tediously slow in writing to the server. (rw,no_subtree_check) are options in exported directories.

What is your experience with NFS and how can I speed up large file/folder transfer(write) speeds?

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Fedora :: The Volume File System Roots Space Is Decreasing?

Nov 18, 2010

My fedora keeps popping up this message of Low disk space..the volume file system roots has only 200 MB remaining.Then it came to 150 MB and now to 100MB.I am using fedora 13 on vmware .I set my vmware hard disk to 20 GB... my file system is showing 100 MB free while my home has 12.3GB free. Is there a way increase the size of my file system. similar problem has been in ubuntu [URL] but I dont know what to do with fedora.Also can some one tell me the way I can increase the size of usr folder .so that I can get some more softwares.Right now I am just stuck.

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General :: RSYNC Error .tar.gz 14gb File / Transfer Huge 14 Gb File Over Network,vpn,wan Transfer?

Mar 10, 2010

i am trying to transfer a file from my live linux machine to remote linux machine it is a mail server and single .tar.gz file include all data. but during transfer it stop working. how can i work and trouble shooot the matter. is there any better way then this to transfer huge 14 gb file over network,vpn,wan transfer. the speed is 1mbps,rest of the file it copy it.

rsync -avz --stats bkup_1.tar.gz root@10.1.1.22:/var/opt/bkup

[root@sa1 logs_os_backup]# less remote.log
Wed Mar 10 09:12:01 AST 2010
building file list ... done
bkup_1.tar.gz
deflate on token returned 0 (87164 bytes left)
rsync error: error in rsync protocol data stream (code 12) at token.c(274)
building file list ... done
code....

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Ubuntu Installation :: USB Transfer Speed In 11.04?

Jul 13, 2011

slow usb transfer speeds has been resolved in 11.04 (Natty Narwhal)? I am currently using Lucid and facing the problem of slow usb transfer speeds which has always been there in ubuntu but everything else is running just fine for me so I see no reason to upgrade yet unless the new OS has solved this problem.

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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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Debian :: Slow USB Transfer Speed With MC

Nov 15, 2010

I have a 500gB USB drive connected to my laptop for backups and filestorage. But I can't get it to play nice with Midnight Commander. My transfer speeds max ut at 2MB/s wich is painfully slow when moving large files such as movies. Worker FM transfers the same files to the same drive much MUCH faster (not sure by how much, though). This leads me to the conclusion that the problem lies with MC.

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Ubuntu Networking :: Slow Transfer Speed Between Laptops?

Feb 7, 2010

I'm experiencing slow speed transfer between two wireless connected laptops running ubuntu 9.10. Using SSH to tranfer files between these two laptops, which connect to the internet via a wirelesss router, with good speed. This is why I'm surprised by this low speed : 52.3 KB/s, averaging 3 hours and 31 minutes for a 700 Mb movie. Is there any way to make this faster ?

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Ubuntu :: Poor Transfer Speed With Samba And Http

Apr 22, 2011

(this is a repost of the same thread in the networking/wireless forum, I think it's better suited here but couldn't see a way to move it) I have a Proliant Microserver, I have Ubuntu Server 10.10 installed onto to a USB stick (the server has an internal USB port). The storage drives are Samsung SpinPoint F1s. The server is plugged into a gbE switch, there is a link from that to a 200mbps powerline link, from there it goes to a 100mbps switch and then to my machine I was testing from.

I realise that a powerline link can often slow things up, but I use the same link for my Internet connection which will happily pull files down at around 4.3mb/s.. so I know the link isn't the bottleneck. If i copy anything via any of the samba shares then it transfers at around 1.5mb/s. This speed does not change if I try plugging the client into the same gbE switch as the server. Similar spees are shown if i transfer it over http via apache2 as well. Client machines are laptop running ubuntu and a win7 desktop. Speeds are the same copying to both of them. I have applied tweaks to samba as described here;

[Code]....

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Fedora Networking :: Samba Transfer Speed

Jan 10, 2010

So what kind of speed are you getting with Samba over your local network? What speeds should I be seeing? I'm currently transferring a large amount of files from one computer to another. I'm taking everything off of a desktop drive on computer A and putting it on an IDE disk on computer B. Transfers are running at around 600-700 KB/Sec. I've seen moments, mostly when the transfer starts, where speeds were at 1000KB/Sec, but that lasts a very short while and then starts to "degrade" until it reaches 600+ KB/Sec. It then seems to level off there. Is this acceptable? Is this all I can expect to get out of a 10/100 home network? The current transfer is 2.5GB. Looks like it will take 1 hour+ to complete. Transferred 12GB last night. Was looking at 4-5 hours to complete so I left it running while I was sleeping. Personally, I think this is slow. I think it could be exponentially faster.

While I'm running these transfers I'm looking at some documentation on Samba speed tweaks. I've been adding little tidbits here and there to both smb.conf files. Some of it seems to help. Sometimes there is a noticeable difference in speed. Sometimes the changes actually cause degradation in speed. If you have a speed tweak that you would like to share the information will be gratefully accepted. Samba gurus welcome to reply. How do you set up Samba in an office environment? How do you set Samba up in an environment where performance is critical?

Maybe I should forget about Samba and try using a different transfer protocol? Am I expecting too much from Samba?I should stop before I really start to ramble. Anyhow, networking beats the heck out of the sneakernet, at any speed!As a side note, or maybe quite importantly, there is a router and a network switch (not a hub) involved here. Maybe something to consider?

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Fedora :: MSN Client With Fast Transfer Speed?

Jan 8, 2011

I use many distros with Amsn or Emesene with both and in all distros slow file transfer speed. There Any knows a client with acceptable transfer speed?

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OpenSUSE Hardware :: Slow USB Transfer Speed ?

Feb 1, 2011

I'm trying to transfer some files to my USB stick, and it's transferring at the most pitiful rate, around 200-400kb/s, occasionally shooting up to 1MB/s, but not for more than a few seconds.

I realize a lot of factors can play into this, so I'll try to provide as much detail as I can.

I'm using OpenSUSE 11.3, KDE 4.6 RC2, and a Corsair Mini Voyager 16GB. My motherboard is a Gigabyte EP45-DS3L.

dmesg output:

Code:

lsusb -t output:

Code:

Sometimes too, the transfer just stops all together. It just... doesn't transfer for a while, then it'll go back to 400kb/s etc, then it'll stop again for a minute.

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Hardware :: Transfer Speed To SDHD Card

Mar 19, 2010

I connected a 16GB SDHD Class 4 card to my PC with a dongle reader. A class 4 card is supposed to support a minimum of 4 MB/s sustained speed. I grabbed a couple of large, 4.4 GB each, files and copied them to the SD card with Nautilus. The transfer rate started out at 60 MB/s and rapidly dropped to 50 then 40 and slowly dropped to 3.5 MB/s after about 3 GB transferred and it is still dropping.The PC will copy from drive to drive at 65 MB/s so I do not think the issue is reading from the hard drive.I am confused about the transfer speeds which Nautilus is showing. Obviously I am not really transferring to this card at 50+ MB/s. If I was moving data from hard drive to cache I would expect much more speed - I have 8 GB of RAM on the PC. That said, I have stopped the transfer and attempted to unmount the card. I get the message "Failed to eject media; one or more volumes on the media are busy." This has been going on for several minutes so some activity is going on in the background.

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Networking :: Transfer Speed Of Wired Connection?

Apr 19, 2010

I recently setup my two PC's for network file sharing using Samba. I notice the max speed I can transfer a file is 89kb/s instead of 100Mb/s. How can I increase the speed to max 100Mb/s? Both systems are running Ubuntu 9.10 w/Samba.

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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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General :: Sony PSP File Transfer Inaccurate Transfer Progress?

Jan 1, 2010

Having a bit of a issue with Debian Squeeze and transferring files to the Sony PSP..Hook up PSP to USB port and Debian mounts it..I go to drag a 125 meg mp4 to video folder..Copy windows takes about 10 seconds to transfer it..Exit USB mode and there is no video there. Go back into USB mode and look at video folder on the PSP memory stick and there is no video..It vanished. From another after copy progress closed I right clicked PSP and unmounted it..

It error-ed saying device was busy and could not unmount..Looking at light on PSP i see memory stick is still being written to..i wait for light to stop flashing..About a minute or so..Then am able to unmount it..Go to PSP video and theres the video ready to be watched. Debian isnt accurately showing the copy progress...Its showing complete when it isnt..I have to watch the light on PSP to know when it is truly finished.

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OpenSUSE Network :: Transfer Speed Between Samba Server And Win Clients

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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General :: Finding A Data Transfer Speed Of A System Using Squid?

Nov 16, 2009

How to find a data transfer speed of a system using squid?

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CentOS 5 :: Switching To 64bit On Sempron LE1100 - Slow Transfer Speed

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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Debian Configuration :: Slow Transfer Speeds On SAMBA Share But Gigabit Speed On SCP

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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Fedora :: Slow Network Transfer Speed In Fedora 13

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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Aug 11, 2011

I only use one workspace anyway, so I was wondering if there was any benefit to removing the other three? By that, I mean performance-wise benefits.

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OpenSUSE :: Decreasing Velocity While Copying To A Usb Pendrive

May 22, 2010

The case is that everytime I try to copy a big file to a pendrive the velocity start falling and 1gb could spend about half an hour. If I try to use another application like chromium the system turns so slow that is imposible to work.

This doesn't happen with an usb hard drive and this usb pendrive works just fine in mac os x and Windows.

I've found some answers that aren't my case, the problem in opensuse 9 or 10 don't remember that the problem was the rsync option while mounting the drive.

I'm using now opensuse 11.2

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Apr 7, 2011

I am running a fedora 12. My free space is continuously decreasing every time I restart my computer. I haven't installed any software nor I am using internet. Also do I need to manually delete temporary files or fedora does it on its own?

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General :: Decreasing Minimum Wireless Signal To Connect?

Jul 12, 2010

My box: Dell Inspiron 1545. lspci results below. I have enabled the Broadcom STA restricted driver.Problems:1. I am noticing in Ubuntu (using Network Manager and Wicd) that I am unable to connect to wireless signals tha are very weak. In my other OS (dual boot), I am able to connect to these weak signals.2. And the speed of these networks is much slower, and the disconnect rate is much higher than in my other OSI am THRILLED with Ubuntu otherwise, just looking to fix this issue so I can use Ubuntu as my primary OS.Could this be an Broadcom STA issue, or Software config issue? etc? Obviously not hardware cause hardware is same on other OS.

Code:
~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev

[code]...

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