Software :: NS2.27 (Delay Tolerant Network)
Mar 12, 2011Instructions for installing ns-allinone ns2-version 2.27 to the network can be simulated DTN (delay tolerant network).
View 14 Replies
ADVERTISEMENT
Ubuntu Installation :: Post-GRUB 2 Delay - Troubleshoot This And Determine What Is Causing The Delay
May 11, 2011After GRUB 2 comes up (I'm running Ubuntu 10.10) and I choose the OS to boot, there is about a 5 second delay where nothing appears to happen after I make the selection -- no disk activity. It happens consistently every time I boot. Again, this is after I choose the OS to boot, so it shouldn't have anything to do with the standard delay to allow me to choose the appropriate OS.Is there a good way to troubleshoot this and determine what is causing the delay?
View 4 Replies View RelatedUbuntu Servers :: Update 10.04 Fetchmail To 6.3.17 (or SSL Tolerant Version)
Jun 25, 2010I've spent all day trying to work this out. We have a ticketing system (request tracker), which polls a POP3 mailbox for new inbound ticket emails. We've upgraded both our mailserver to exchange 2007 and are trialling RT on a new ESXi host. While this arrangement has worked perfectly for 2 years on exchange 2003, 2007 gives you the option of using TLS.
Unfortunately, the version of fetchmail in the repositories for 10.04 (fetchmail 6.3.9) just does not want to work with exchange 2007, no matter what i specify in /etc/fetchmailrc, however by playing around with the production RT server, I've found that upgrading fetchmail to 6.3.17 (which is the latest version) just makes everything work again.
However, I've pretty much broken the fetchmail install on my production box - I now seem to have both 6.3.9 & 6.3.17 installed on there, and if I use /etc/init.d/fetchmail to restart it, it'll restart 6.3.9 which then generates errors about certificates and never collects any mail, however if I manually start fetchmail then it starts 6.3.17 (which is the version that i want the init script to start for me).
So, 2 questions. How do I fix my garbled install of fetchmail on my production box, and how do I upgrade my ESXi instance to fetchmail 6.3.17 without breaking anything? I'm happy with doing the ./configure and make install to get 6.3.17 on the box, but it then extracts it to my home directory - what do I do then to update the 6.3.9 fetchmail files that are currently in existance?
Ubuntu :: Delay A Script Command Until Network Connected?
Mar 20, 2011I have a script with a command that requires a network connection.
It worked fine with an ethernet connection but on changing to a wireless one, its stopped working.
Question: how can I delay a script command until the network is connected?
Debian :: Delay Init.d Script Until Network Filesystem Is Available?
Oct 27, 2010I'm having some difficulty starting a service from an init.d script. It relies on the availability of a network filesystem (glusterfs) which is mounted from fstab. The service starts before the filesystem is up, and crashes.I've tried adding "# Required-Start: remote_fs" to the service init.d script, and delaying it by changing the ordering with "update-rc.d service defaults 90", but neither seems to work. If I add a "sleep 10" to the script, that works, but it feels wrong.Is there some way to get the ordering right? To delay starting the service until after everything in fstab is ready to g
View 2 Replies View RelatedNetworking :: Ubuntu 10.04 Delay Mounting Network Shares In Fstab?
Jun 14, 2010Using Xubuntu 10.04 to connect to some Windows XP shares by adding lines to fstab. The network shares are not mounted at boot, but can be mounted from the command line, after the OS has booted and everything is up. I am suspecting the network isn't up yet, when fstab is processed. I tried adding the option "_netdev" to the relevant network share lines in fstab, but the shares still don't mount automatically at boot up. I read that this option only works for NFS and I am using CIFS. Can someone confirm that _netdev only works for NFS ?
I've seen solutions involving running a mount script after the OS is fully loaded, or running a cron job to periodically check the status of the share and mount if needed. Good workaround but doesn't address the root cause. Is there any other way (besides the _netdev option) to delay mounting of network shares that appear in fstab until the network interface is up ?
Networking :: "ping" Shows Different Delay From Two Computer On The Same Network?
Jul 20, 2010I am using "ping" on 2 computers on the same wifi network.One of them shows a bigger delay than the other consistently.I am trying to find out what may be the problem.. Can someone suggesta way to investigate this issue or isolate the problem?Both of them sending "ping" at almost the same time.First laptop (much newer laptop model)
Code:
PING www.l.google.com (64.233.181.104): 56 data bytes
64 bytes from 64.233.181.104: icmp_seq=0 ttl=48 time=1011 ms
[code]...
Server :: LVM Strategy For A Fault Tolerant Server
Jan 22, 2010I'm working on a home project to build a VM server. I'm have older hardware (IBM x306) and my processor doesn't have built-in virtualization support, so I'm going with VirtualBox. That seems to give me the most flexibility with supported guest OS's on my P4 processor. I'm using CentOS 5.4 installed on a software RAID1 array and I ran into an issue where every time I try to create a fixed-size virtual hard drive my whole server locks up. I think VirtualBox may have a problem managing virtual hard drives on a software RAID (unconfirmed).Anyway my idea is to create 2 mirrored volumes using LVM to see if that works out any better. I started reading up on it and found this article. My server only has 2 hard drive bays (it's 1U) and the article says that 3 physical disks are really necessary for true fault tolerance.
View 1 Replies View RelatedGeneral :: Insertion Of Vbr And VBR End Delay More
Apr 22, 2011I am using Ubuntu marvic amd64 10.10. I installed ns-allinone 2.34. then I inserted vbr traffic according to one of forum from this linux " Insertion steps of VBR into NS2.34" I made the following changes
Makefile, line 36 : CC = gcc-4.3
Makefile, line 37 : CPP = g++-4.3
vbr_traffic.cc in ns2.34/tools then Makefile : tools/vbr_traffic.o of 183
then I use the command cd ns-allinone-2.34/ns-2.34/ && mv ns ns234 && make after that I delete the ns. with the new command I run the script with every time puase time 0 and simulation time 200, 10 250, 20 300, 40 400..... with DSR after completion of simulation, when i was try to plot graph between throughputs of receiving bits vs Maximul end to end delay, every time I got the delay more than 90, 100, etc so how can I reduce that problem. I thought problem was in insertion of vbr.
Slackware :: Pasting Delay In The 13.37?
May 19, 2011highlight text, go to where I want to paste it, click middle mouse button. The text then appears after a delay of at least a second, sometimes several. In SW13.1 and previous, the pasting was almost instantaneous. How do I get rid of this delay?
View 2 Replies View RelatedCentOS 5 :: GDM Delay At Startup?
Mar 5, 2010I'm having a problem with GDM very similar to the one described in the thread below, though they did not find a solution.
[URL]
Basically when I boot the machine I first see the terminal login, then after a moment I get what looks like some graphical corruption followed by GDM appearing.
I've already attempted reinstalling GNOME and X, then manually reinstalling GDM, but none have solved the problem. I'm currently in the process of enabling boot logging as described in the thread, so I'll post that soon.
Fedora :: Why Kernel Update Delay On F11
Mar 19, 2010Last Saturday, I ran an update on my laptop using F12 and received a new kernel. As of this morning, the new kernel hasn't shown up on my desktop, using f 11. (Yes, I check every day.) Currently, my uptime is 34 days, so you can see how long it's been since the last kernel update for F11. Does anybody know why there'd be an update for one version and not for another? In case anybody's wondering:
[joe@khorlia ~]$ uname -r
2.6.30.10-105.2.23.fc11.i586
Fedora :: 5 Second Delay Printing From Cups?
Aug 26, 2010Not sure if this is hardware or software so I am raising the question here. I have an Ithaca 280 printer that worked great on fedora 8 with cups 1.3.3. When I upgraded my server and installed Fedora 12 with cups 1.4.2 i noticed a 5 second delay between sending a print job to the printer and it actually printing. This issue doesnt happen with laser printers, just the ithaca thermal printer. I have tested this with 10 other ithaca 280 printers and all of them have the same result. I am using a raw driver, and it is an IP based printer setup for Jetdirect in cups. The setup is identical on a Fedora 8 server as it is on this Fedora 12 server. I have even taken the steps to upgrade to cups 1.4.4 just to see if it was corrected in a newer version, but the issue is still there. I have a utility that writes the raw text directly to the printer which i used to test that it wasnt an issue with the printer or its internal print server. That utility allows the document to print immediately.
what is causing this delay and how to correct it? If not, does anyone know how to print directly to the printer using cups instead of letting it go to the queue first like cups normally does for print jobs?
Fedora :: Long Delay Before Booting ?
Aug 22, 2011I just installed Fedora on my desktop (previously Ubuntu)
The root and boot partitions are on a OCZ RevoDrive, which is seen as 2 separate drives and used software raid0 for speed.
Here is a link to my bootchart, which shows a 17sec delay before anything starts.
[url]
md0 and md1 are on the RevoDrive, the boot is a raid1 partition (as i was unable to boot from a raid0 partition) and the root partition is a raid 0 partition
Code:
Any one know away to get rid of the delay at the start of the boot chart?
OpenSUSE :: Delay While Starting Opera - 11.3
Jul 16, 2010I've performed a new installation of openSUSE 11.3 and I see a lag while starting Opera - close to 10 - 15 seconds.... I didn't have a similar issue with 11.2.... I notice this not only in KDE but in Gnome as well.... This happens only with Opera and not any other application.... These are the details about my Opera installation:
Code:
Version 10.60 Internal
Build 6386
Platform Linux
System x86_64, 2.6.34-12-desktop Can anyone else using Opera confirm if they're facing a similar issue.... If not I can submit the logs at Opera website to see what might be the problem...
Ubuntu :: FIFO Delay On 10.04 / SSHDFilter
Sep 19, 2010I am trying to set up sshdfilter on my new linux box and can't get the expected functionality. I couldn't get IP's to be blocked no matter how many bad passwords I put in. I have sshdfilter set up to read from a fifo (/var/log/sshd.fifo, which has been chmod'd to 600), but when I run sudo tail -f /var/log/sshd.fifo, I don't see any output as I attempt to SSH into the machine, though /var/log/auth.log is correctly logging the login attempts. However, when I run sudo reboot -h now, the entries from /var/log/auth.log appear in the FIFO. I'm wondering if I don't have a misconfiguration somewhere that isn't allowing my auth.log to pipe to my FIFO (I am running a virtual bridge). I can provide more system specific information if anybody is curious (no, I won't give you my IP so you can brute force my sshdfilter-less computer.
View 2 Replies View RelatedUbuntu :: Delay On Mail Notification ?
Oct 8, 2010I use the Gnome Mail Notification Applet and have recently moved from a wired desktop machine to a wireless laptop.
The problem I have is that the Mail Notification shows an error because it tries to check mail immediately, the network hasn't finished connecting at this time though.
Is there a way to add a delay to this? I can't see one.
Or if anyone can suggest an alternative that is just as good (or better) and allows for a delay?
Ubuntu :: How To Delay Mount An Ext USB Drive
Nov 29, 2010I have an usb external hd I need to delay mount. If I enter the information in the /etc/fstab, on a reboot I get an error that the drive is not ready.If I manually mount it, it works fine. problem only occurs after a reboot or restart.I need to mount it automatically after I have logged in. I am not sure how to go about doing this.this is the out put of the fdisk -l
Device Boot Start End Blocks Id System
/dev/sdh1 1 121601 976760001 83 Linux
this is the /etc/fstab entry
UUID=a52b06f6-9453-42ce-a050-f76568476411 /media/WD_2TB ext3 defaults 0 2
Ubuntu :: Flash - 2 Second Delay In Audio
Jan 1, 2011Using 64bit 10.10, when I click any of the controls that manipulate sound, such as pause, play, or changing volume, there is a 2 second delay before it takes effects, some examples:
- If I hit Play, then the video will begin to play but I hear no audio for 2 seconds, then the sound will begin in sync.
- If I adjust the volume it takes 2 seconds for it to actually change.
- If I hit pause it will immediately pause the video portion, but the sound continues for an additional 2 seconds before stopping.
I have seen numerous people on Google with my problem by googling "flash delay ubuntu". I do not believe this is related to pulseaudio, etc. that I know of, but seems to only occur using Flash as far as I am aware.
Ubuntu :: Delay After Taking Screenshot?
Aug 15, 2011I've been experiencing a weird delay between me pressing the printscreen key and the screenshot dialog appearing. The delay is about one second, and is happening even though gnome-screenshot's delay key is set to zero in gconf-editor. This delay is making it difficult to capture things which disappear quickly, and I'd like to know if there's any way to make the screenshot dialog appear instantly.
View 2 Replies View RelatedSoftware :: Deleting Delay From Mp3 Files?
Mar 26, 2010I have a large collection of CDs that I ripped to mp3 a few years back. I would like to go sell them to a store and get some money for them (I haven't used the physical CDs in years). The deal is that when I started ripping the CDs, the program I was using would insert a 2 second delay between songs. I would like to know if there is a program/command that I can use to remove this delay between songs. Some of them have 0 delay, so songs that fade into each other sound correct. Other albums have songs that are supposed to seamlessly fade into each other, but they don't because of this delay. Is there any way to remove that delay between songs or do I have to re-rip the CD? Figuring out which albums have that problem and re-ripping the CD is going to take a very, very long time.
View 3 Replies View RelatedRed Hat / Fedora :: SSH Delay Prompting Password?
Oct 26, 2010I have been connecting to ssh but now it takes longer time to prompt for username and also password.Can any one tell what is the reason why it takes time
View 3 Replies View RelatedGeneral :: Way To Delay All Sound On The Computer?
May 27, 2011I've got a computer hooked up to my TV and it seems that all video files have audio that is a fraction too early. The files are fine on my laptop. I wonder if there is a way to delay all sound on the computer to help with this problem.
View 2 Replies View RelatedServer :: Sendmail Set Delay Between Two Mails
Apr 7, 2010I need to set a delay between sending two mails (say 1 second). I have a shared server so delay for specific domain will be more usefull(aaa.com - 2 sec, bb.com 1 sec etc).
View 6 Replies View RelatedSoftware :: Delay When Reading From An USB-A-port?
Jun 29, 2010Working on a project based on embedded linux. The system is based on an Atmel ARM9 processor.
On one of the ports, an USB-A, we are constantly talking with several pieces external equipment (hereafter called slaves) at the speed of 4800 baud.
The communication is designed so that one messages is sent to a certain slave. The answer is expected to arrive directly. If no answer is received within 2 seconds, the sent message is sent in a resend buffer, and will be sent next cycle.
My problem is now that sometimes, the answer isn't received in 2 seconds. But when the message to the next slave is sent, the answer from the previous slave is received.
That is at least how it looked like from my software point of view.
But, then I used a serial sniffer on the USB port, and found out that the answer actually did arrive in time. Thus the delay must be somewhere between the USB port and my software. Linux in other words?
My software uses standard functions read() and write() for the communication.
Programming :: Delay Calculation For LSB In Timer?
Sep 5, 2010On the following link Following code is given
Code:
loopbit = loops_per_jiffy;
/* Gradually work on the lower-order bits */
while (lps_precision-- && (loopbit >>= 1)) {
loops_per_jiffy |= loopbit;
ticks = jiffies;
while (ticks == jiffies); /* Wait until the start
[Code]...
Slackware :: Delay SSH Prompt After Bad Password?
May 14, 2010delay the retry response from SSH (for, say, 10, 20 or 30 seconds) when a bad password is tried by a whacker? I mean, when I'm getting hit by 10 or more break-in attempts, is there some way to make SSH delay the next try from the site that's trying?I seem to remember something about this but haven't been able to find it and, so far, reading the SSH documentation hasn't been
I have DenyHosts running (that puts entries in /etc/hosts.deny after a few tries to break in) and I completely block China, Korea and a few others that are a constant annoyance with IPTABLES but I do get hit pretty much every day and would like to discourage the bastards as much as possible (the hits are a second or so apart which tells me they're automated and I figure delaying the response will discourage 'em).For example, here's the overnight entries from /var/log/messages (the "refused connect" are from /etc/hosts.deny entries generated by DenyHosts):
Code:
May 13 03:49:50 fubar sshd[30255]: refused connect from 200.49.226.12 (200.49.226.12)
May 13 03:51:27 fubar sshd[30256]: refused connect from 200.49.226.12 (200.49.226.12)
[code]....
Slackware :: (ver. 13.37) After Delay, New User Causes X To Crash?
Jun 13, 2011I have a new installation of Slackware 13.37 on an old Dell Optiplex P4. Right after installation (when I only had a root account) I found that X (regardless of window manager) would develop video problems after a few minutes (horizontal lines, slowdown -- though without crashing). A message board informed me that that there was a bug in my onboard Intel video chip that would require me to enable shadow buffering (which amounts to disabling 2D acceleration). I made the change in the Xorg.conf, and the issue disappeared.
However, once I finally got around to adding a new user, X began acting up again, though I have no idea whether it's related to the earlier problem. Now, after a few minutes, it actually crashes -- though only when started under the new user. Root still works fine. I'm new to Linux, and still trying to sort through all the different logging tools, so I'm not sure what I ought to be posting. Here's the relevant bit from Xorg.0.log:
Code:
[ 1886.178] (II) intel(0): Modeline "800x600"x70.0 45.50 800 840 920 1040 600 601 604 625 -hsync +vsync (43.8 kHz)
[ 3090.195]
Backtrace:
[ 3090.195] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e72fb]
[ 3090.195] 1: /usr/bin/X (0x8048000+0x5dbf5) [0x80a5bf5]
[Code]...
CentOS 5 :: Cups Delay Between Jobs?
Nov 16, 2009Since my last server upgrade, last Thursday, cups is having a strange behavior: I have 3 text-only printers, and an application that prints to them. The application, to print 5 lines, it sends 5 jobs to the printer. Before the upgrade, all the jobs where printed sequentially, without any delay. After the upgrade, cups makes a small delay (5s or more) between every one...Its very annoying for the users...
View 1 Replies View RelatedDebian :: SSH Password Prompt Delay In Lenny
Feb 22, 2010Before upgrading to Lenny there was no noticeable delay between entering a username & the prompt for a password when logging in via ssh. Now there is about a 5-second delay which is rather annoying. There is no delay when logging in through the Gnome UI. Anyone know why the delay is there? Is it something about ssh under Lenny? Is there a setting that can be changed?
View 1 Replies View Related