Ubuntu Servers :: LVM Read Slowdown During Torrent Uploads?
Jul 14, 2011
I've made a simple headless home server based on:
1. Motherboard Asus AT4NM10-I (Intel NM10, PCI)
2. CPU integrated Intel Atom D410
3. 2 Gb of RAM
4. Network Card D-Link DGE-528T 10/100/1000 Mbit/s
5. OS Ubuntu Server 10.04.2 (All installed packages are up to date)
Storage build under LVM based on:
1. Samsung HD103SI - 1 Tb, 5400/32 Mb.
2. Hitachi SATA 2000Gb Deskstar 7K3000 - 2 Tb, 7200/64 Mb.
So found one issue: When torrent upload speed reaches peak speed (160-200 Kbytes/s) huge read slowdown happens. Server becomes almost unreachable... It allows to connect via putty but it takes a lot of time.
Tested top stats during those lags (Deluge, Transmission) - 10-15% CPU usage.
So I think the problem is in LVM and not in CPU.
How is it possible to find weak place in system to avoid those lags... Cause if torrent is seeding it's impossible to watch movies through network form that server.
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Jun 24, 2011
I have a home server based on Ubuntu Linux 10.04.2.
Hardware:
Motherboard - Asus AT4NM10-I (Intel NM10, PCI)
CPU - Integrated Intel Atom D410
RAM - 2 Gb
Lan - D-Link DGE-528T Gigabit Adapter
Provider gives 8/2 Mbit ADSL connection.
So tried Deluge and Transmission, and integrated or external network card and no luck.
When torrent file is being seeded on top speed network starts freezing, server almost unreachable, video freezing when watching it by LAN from server... etc...
When I pause upload - everything starts working ok!
Network based on gigabit switch and cooper UTP cables...
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Jul 17, 2011
In my /var/www directory, I have everything set up with:
user: www-data
group: developers
directories: chmod 570
files: chmod 460
Everything seems fine. Users from the developers group can edit files and all, but now we began using the Git repository, and whenever a user edits a file (ie. Joe who is a developer,) file permissions get screwed again. Now they're:
user: Joe
group: Joe
directories: chmod 755
files: chmod 644
How can I fix this so permissions remain the same?
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Sep 20, 2010
I have a web server in my kitchen with apache running on it. Since the upload speed is quite low due to my isp I would like to execute a bash script that uploads a file to another server through a website (which is htaccess protected) The idea in general: Someone with access to my website browses through a folder, copies a file path to an input form and presses "upload". Rather than executing a bash script directly I could have a cron job running in background that finds the path and then uploads the file to the other server I have userspace on and is accessible via sftp/ssh. The file would be than erased later after a couple of days or so. That person would be able to access the file with higher speed some time later without logging in via ssh and doing all that manually.
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Dec 19, 2010
I am trying to torrent using transmission. The problem is, when I click a link to download something, I just get
"/tmp/mn3BZo4y.torrent.part could not be saved, because the source file could not be read. Try again later, or contact the server administrator."
This is happening on all torrent sites.It never comes up with an "open with" option or anything.
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Dec 7, 2010
I use deluge and it worked for a while then randomly I got this error message when trying to download a .torrent file:"/tmp/Manchester_Orchestra___I_m_Like_A_Virgin_Losing_A_ ___-1.torrent could not be opened, because an unknown error occurred.Try saving to disk first and then opening the file."
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Mar 7, 2010
I've played with ubuntu for quite a while now and i picked up a atom core mini pc for cheap so i thought i'd make a hobby in setting up a simple server to store files on, access files on my xbmc enabled xbox and download torrents whilst i'm at work though the torrents can wait for future projects though i installed ubuntu server 9.10, i'm aware it's CL only, anyway thus far i've managed to set up the ipaddress of it and make it fixed i'm not sure of what to do with hosts at the moment, reading on it isn't making much sense of it's purpose or layout so i've left it as is i permenently mounted a fat32 partition to /media/stuff and changed permissions to 0777 only have one user on it, myself installed samba smbfs smbclient and an openssh server, and can do all the terminal stuff from my normal pc my current issue lies with samba, with gnome desktop i've never had TOO many problems with sharing folders, however i'm stuck where to proceed in regards to editing smb.conf as there's a lot of options, some of which i'm not sure i need
- I've changed the workgroup to home
- under authentication i have security = share
- i added the following section
Code:
Anyway on my windows xp pro machine, i can access \thork which is the machine and i see 'media-stuff' which is a start i guess, but im refuesed access automatically.
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Nov 25, 2010
I'm trying to blind deluge torrent to port 80 but as I'm running already a server on this port, I've decided to use the ProxyPass option in a vhost. As I prefer running through HTTPS, I've used my vhost 443 that I already use for bind AjaxTerm (SSH with a web interface)
But whereas AjaxTerm works, Deluge doesn't...I only get a black page but the tab name is correct (ie, Deluge: Web UI 1.3.1)
Here is my vhost
Code:
<VirtualHost *:443>
SSLEngine On
SSLCertificateFile /etc/ssl/private/localhost.pem
ProxyRequests Off
[Code].....
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Jun 19, 2011
i recently caved and upgraded to ubuntu 11.04, despite my hate of the unity interface. anyway, i seem to be having completely random, massive lag spikes! seems to happen when i do certain things, such as spend to much time on videos, or stream hd videos. playing games, such as minecraft, and using skype seems to be giving me the same issue. i don't know what to do! i haven't found anything similar to this in my google searches,
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Jan 11, 2010
I am having a bad slowdown issue when I enable Visual Effects with the Ati proprietary drivers that come with the installation. Everything runs very slow maximizing and minimizing take about 3-5 seconds per click and the effects get all choppy and don't look right like they did on my x1950 video card. I have tried downloading the current drivers from the ATI site but they don't seem to be initialising correctly after I perform the install.
I also know that the graphics card is not the culprit as it works perfectly fine on my Windows 7 64 bit install. There is no reason that my video card cannot handle the Visual Effects as it is a 1GB 4890 should have more than enough horsepower.
My machine is:
AMD Phenom II 965 Black Edition
8 GB G. Skill 1600 DDR3 Memory
1 TB Western Digital Caviar hard drive
1 GB 4890 Graphics Card ATI.
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Jul 3, 2010
Anyone seeing a dramatic slowdown and "PAGE NOT FOUNDS" after the latest updates?
It even happens on LAN activity. Peak speed is excellent, the ability to resolve both local and WAN addresses is very spotty.
Machine is a newer Clone with AMD Phenom II dual core with 2gb running 10.04 32-bit with Gnome. Network is Gigabyte MoBo 1000-T ethernet hardwired to Dlink router into cablemodem.
XP and Win7 aren't affected.
It was ripping this morning, but right now, is pretty much crippled.
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May 23, 2010
I have Ubuntu 10.04. I installed the KDE libraries to use Okular. Then Ubuntu took almost 30s more to boot (20s black screen between login and desktop). I uninstalled KDE, booted on another kernel, rebooted and the boot time was OK again (25s).
I reinstalled KDE, 55s to boot again. Rebooted couples of times always the same. Rebooted on another kernel then again on mine (it seems to fix the slow boot times).
Boot time was 35s (I thought it was OK). After lauching Okular, the boot time was again 55s...
Removed KDE, Okular, and the boot time is normal again since 10 reboots..
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May 8, 2011
Does anyone else have problems when loading an animated gif in firefox? After upgrading to natty, firefox eats 100% of cpu each time an animated gif is displayed on the tab title, or when the favicon is an animation. I have an fglrx driver, but opengl animation doesnt slowdown pc as much as favicons does on firefox.
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Nov 17, 2010
I have noticed that when iptables is active on my router i get a noticeable slowdown on browsing. This is untraceable through traceroute:
Code:
traceroute -n www.a-site-here.com
finishes immediately and at the same time when loading the site on firefox I am getting timeouts.
I use firewall builder to configure iptables. I have removed all rules while trying to find the one causing the problem, but even disabling all rules does not solve the problem. So, by leaving only an "accept-all" rule on firewall builder(so i don't lock myself outside) I still get slowdowns. In this case
Code:
iptables --list-rules
gives:
Code:
-P INPUT DROP
-P FORWARD DROP
-P OUTPUT DROP
[Code]....
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May 4, 2011
I am seeing a 0.3% clock slowdown in kernel 2.6.18-238.9.1.It is giving ntpd conniptions.The problem does not occur in the previous 2.6.18-238.5.1 kernel.
# 2.6.18-238.9.1
[root@blue ~]# uname -a
Linux blue 2.6.18-238.9.1.el5 #1 SMP Tue Apr 12 18:10:13 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux[code]....
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Dec 13, 2010
Does anyone else find that Openoffice 3.2's spreadsheet app becomes unresponsive when copying and pasting multi-cell selections? I've had this problem ever since I started using Ubuntu 10.04, which comes with OO.O 3.2. The problem becomes noticeable whenever I make a selection more than about 8-10 columns across. Once the flashing border appears around the selected cells, the spreadsheet app becomes very sluggish. The mouse still moves normally, but it takes several seconds after a click until the highlight moves to another cell, or to un-select the cells, or copy them. These slowdowns happen both in old spreadsheets and in freshly created ones. They didn't happen with Openoffice 3.1 or earlier. Haven't tried it under Windows, so I'm not sure whether this is an issue specific to Linux OpenOffice 3.2. Other apps don't seem to be affected.
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Jul 30, 2011
If I initiate a file copy of more than a couple of GiB, the PC goes into a dramatic slowdown. Even selecting a different subdirectory through Nautilus can take 30+ seconds.Now, whilst I appreciate that file copying puts a load on the bus, DMA and, to a certain extent, the CPU, it seems unconscionable that it makes the PC effectively unusable until the copy has completed.Is there any way to (practically) lower the priority, or similar, of the copy process so that one can continue to use the platform during large file copies? Right now, I end up using a laptop adjacent to the PC whenever I have to copy a large file. This, for a mainstream operating system is, frankly, ludicrous.I'm aware that I could run Nautilus 'nicely' but I don't want to make changes which would compromise other aspects of the system. It would also be pleasant, for a change, not to have to read a couple of telephone directories of technical documentation in order to resolve the problem myself. This must be a general problem and, in my view, something which seriously compromises the usefulness of Ubuntu given the sizes of contemporary drives and files.
The i7 I'm using at the moment has 8 cores non of which go over 15% usage while the copy is progressing despite the OS being effectively frozen for long periods.Environment:Intel Core i7-2600 @ 3.40GHz; 16GB RAM; Natty (11.04) fully updated as at 29th July 2011; Kernel 2.6.38-10-generic, GNOME 2.32.1.; Primary drive has 563.9GiB free space, Running in Ubuntu 'Classic' (no effects) mode
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
[code]....
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May 18, 2011
Sometimes I notice that there is high upload speeds for 10 minutes or so. At the time of the screenshot I was sitting in a public wireless place, only chromium was open and I don't see any reason why there should be sustained upload speeds.Is there a GUI or CLI so I can find out which process uses the internet?
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Jul 13, 2011
All my music is already synced, but every time a song finishes playing in Banshee, a notify OSD message appears letting me know that song is being uploaded to my Ubuntu One account. I'm running Ubuntu 11.04 32 bit.
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Feb 9, 2011
This is not the common problem that's on the stickied thread. I'm able to connect to my wireless network perfectly. I switch between Windows to game and Linux for desktop, coding, and hosting, so I can tell it has something to do with ubuntu 10.10. When I'm connected to my wireless network, at random times, my internet begins to slowdown, then I get disconnected from the internet, but the taskbar says I'm connected. This problem only happens in ubuntu and not Windows for some strange reason.
The applications that are usually open do not cause it, because it still does it even though I have little applications open (Google Chrome, gedit). When I'm on Teamspeak 3, I notice my ping rises to the 1000s randomly, and I get disconnected. Once again that only happens on Ubuntu.
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Feb 2, 2010
Hope you can help me out. I'm trying to setup a "drop-box" on ubuntu 9.10 server with vsftpd. I'm able to login and land in the /home/user directory, however I cannot write anything.
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May 21, 2011
I have a server and I have a few computers connected to it via a Airport Extreme. Using network cable. So when Im uploading,(ftp) IE using a lot of the network "space" the other computers on the network gets kicked out. So what is going on? My Airport Extreme is doing fine, but my other clients just get kicked out. If I pause the upload, everything is okay again. The whole network is 1 gigabit, clients, everything.
[Code].....
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Nov 22, 2008
I have a site that users upload files on. Its on a dedicated server with 2 HDDs and the first HDD is 97% full, is it possible to use the other HDD for the files users upload? if so how?
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Sep 16, 2010
Can we create alert whenever a upload to ftp server happens. We have redhat 5
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Mar 2, 2011
I'm running 32-bit Debian Squeeze (2.6.32-5-686) on an old IBM TinkCentre piece-meal system that runs great otherwise. I have a LITEON iHAS424 Burner attached. As soon as I insert any disk (CD, DVD, Blank, Commercial, etc.) the system either locks up entirely or crawls to a near stop. The drive is about 3-4 months old and I've experienced the problem a couple of times in the past but just about every time I try to use it lately. The CD/DVD drive seems to work fine on other systems, but I haven't had the luxury of leaving in for any length of time to be 100% sure.
I have been able to pull out of the problem in the past by opening up the case and disconnecting/reconnecting both ends of the drive cable, but this doesn't always work and never "feels right" as a fix.Here is what I think are the significant portions of my messages log file:Quote:
Mar 1 20:03:46 bugs kernel: [ 1.415289] ata_piix 0000:00:1f.2: PCI INT A -> GSI 18 (level, low) -> IRQ 18
Mar 1 20:03:46 bugs kernel: [ 1.415299] ata_piix 0000:00:1f.2: MAP [ P0 P1 IDE IDE ]
[code]...
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Dec 9, 2009
I recently added an external hard drive through a IEEE 1394 interface. I'm finding that during large file transfers the system slows to a crawl. It's still running: routing for example seems fine. But running applications are pretty much unusable: Apache is unusably slow, SSH login is very slow, etc. Currently I'm using the IEEE 1394 drivers from Axel's ATRpms but I'm pretty sure I saw this with the default kernel IEEE 1394 drivers too.
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Jul 15, 2011
Is there any way to change ubuntu one upload settings so that it only uploads 1 file at a time. I have slow upload speeds and the files don't always make it.
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Feb 5, 2010
does anybody know if there is some web tool which allow the end user to read the server log ? I am a system administrator in my company and i would need to share the server log information to the developer team without allowing them to access to the server.I was thinking to some web applications .. i would try phpLogCon but unfortunately it reads only syslog . I need to share some application logs (php or java web application).
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Nov 2, 2010
I can't read the boot log In Ubuntu Server 10.10. I did this:
Code:
BOOTLOGD_ENABLE=yes in /etc/default/bootlogd
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Code:
cat /var/log/boot
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Jul 27, 2011
I've restarted Apache after making changes to the php.ini file (/etc/php5/apache2) and no changes are reflected in phpinfo() which indicates that I am editing the correct file. I'm quite familiar with the process as I've done it many times before with no issues.
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