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Questions tagged [delay]

The tag has no usage guidance.

0
votes
1answer
20 views

Running command on each line of output immediately [duplicate]

I found out that when I run a command which executes a software that has continuous output lines e.g. traffic monitor like tcpdump or tshark the command keeps counting numbers on screen like 4, 8, 12 ....
0
votes
0answers
139 views

How do i capture /proc/<pid>/stat file of a process | linux kernel

As you may know, the /proc/stat file contain the numbers of ticks the different CPU's have spent their time. Same goes to /proc/pid/stat where the tics are measured based on pid (process id) But when ...
1
vote
0answers
44 views

Weird I/O stalls affecting a whole desktop

After a recent hardware migration I started experiencing weird I/O stalls affecting my desktop Debian Stretch system. Typical symptoms, all happening during each stall: I stop being able to interact ...
2
votes
1answer
616 views

Boot delay due to systemd device start job timeout

Problem description I've taken to finally address the issue of my system booting slower than it should. My first step was to have a look at the boot log, which showed the start job for a device ...
0
votes
2answers
139 views

Debian NFS wait too long when the other Debian is turned off

I have a home network with two Debian 9 PCs. I'm using NFS to share a folder from each PC with the other, both read-only. The config files are: /etc/exports on Machine1: /path/on/machine1/share ...
1
vote
1answer
53 views

Does we need a delay time between command in Linux ?

I have a script process.csh for processing many files through many steps which the above output is the input of below command. Do I need to insert a delay between commands to be sure there is no ...
3
votes
0answers
50 views

Why does a high IO rate on an external disk degrade performance of the whole system?

I'm running a variant of Debian (Proxmox Virtual Environment) on my HP server, and I've noticed a strange quirk: while performing a backup to a USB drive (usually around 20 gigabytes worth of data, so ...
12
votes
6answers
1k views

at some time from now do something (and maybe also show result in console)

I use Ubuntu server 16.04 and I desire to use the utility at in my current session to do something 1 minute from now (say, an echo), without giving a specific date and time - just 1 minute ahead from ...
0
votes
1answer
36 views

start new script if last script is not execute with in minute

I have too many entry in cron tab to run script at every half hour (more than 50 script). At every half hour all script will executed simultaneously so that server load will increase due to starting ...
0
votes
1answer
501 views

error: ‘TCP_NODELAY’ was not declared in this scope [closed]

I am trying to compile ChatScipt v7.55 in Ubuntu 16.04. But when I use make server command, I get this error: evserver.cpp: In function ‘int settcpnodelay(int)’: evserver.cpp:263:40: error: ‘...
1
vote
1answer
112 views

wireshark packet capture point [closed]

I am using tc qdisc to add delay to packets on my interface eth2 as follows sudo tc qdisc add dev eth2 root netem delay 100ms 10ms 25% Then I pinged a host and got some result. The results on the ...
1
vote
0answers
348 views

Delay some localhost traffic

How to delay some localhost traffic? (the computer is a VM, but hopefully that won't matter) The following creates a new interface and tries to apply tc to it: ifconfig lo:1 127.0.10.10 netmask 255....
1
vote
1answer
1k views

Add delay to network interface at boot

I'm currently working on a Raspberry Pi project, running Ubuntu Mate 32 bit, The RPi is going to be at sea and connects to the internet via a 4G router. Via the VPN network, it sends data to another ...
1
vote
0answers
257 views

OpenVPN connection delay, server logs PUSH: Received control message: 'PUSH_REQUEST' multiple times

I'm troubleshooting a connection delay to my OpenVPN server, occurring when my client connects and disconnects a couple of times (2-3 times usually result in the described behaviour). Server/Client-...
0
votes
1answer
445 views

Delayed script to boot exagear and skype using RPI3 on debian

I'm using Exagear desktop to run Skype on RPI3 (Raspbian/Debian). I have some naive users also using the system because of which I want to load both of them on boot (maybe delayed startup service). I ...
0
votes
1answer
63 views

How to make modsecurity to punish users by adding a delay when some sql injection are detected

Actually we have a webfirewall (modsecurity) blocking common sql injections on our server. I want to know if there is a way to punish users when they try sql injections on the server, by making ...
1
vote
0answers
166 views

Giving maximum priority to some traffic

I have all my interfaces configured as follows: tc qdisc add dev eth0 root handle 1: htb default 20 tc class add dev eth0 parent 1: classid 1:1 htb rate 10.0Mbit burst 15k tc class add dev eth0 ...
0
votes
1answer
164 views

How do I remove delay in dhclient after DHCPNAK?

After moving to new AP, I restart dhclient to switch to the new network: DHCPREQUEST on <interface> to 255.255.255.255 port 67 DHCPNAK from <new router IP> <delay> DHCPDISCOVER on &...
23
votes
4answers
42k views

Run command after a certain length of time has elapsed?

If I'm executing a long process, is there any way I can execute some time-based commands? For example, I'm running a really long process which runs for roughly 10 minutes. After 5 minutes, I would ...
0
votes
1answer
47 views

High time until SSH asks for password

I've been noting recently that any host that I ssh to in LAN, waits like 5 seconds before asking for password. ping sometimes also waits, but less(like 2 seconds), but it shows it has resolved the ...
0
votes
1answer
73 views

reminder script to remove string from file

I have debian squeeze installed on my box. I have BIRD daemon to route traffic of particular IP. We add IP to bird-route.conf automatically from ruby script if traffic spikes up to specific range. I ...
2
votes
0answers
132 views

Mysterious 8 second delay in boot after grub

I have installed Fedora 23 (KDE spin) on an HP Prodesk mini 600 G2. There is one problem I can't quite figure out, though: after grub comes up, and I press enter on any kernel to boot, the screen goes ...
3
votes
0answers
24 views

Limit access/transmit rights on NIC to a single user application

I currently have a RT patched linux machine and I need to have full and undelayed access to my Wired interface card. I am running a realtime non-preemtable user application which sends a couple of ...
2
votes
1answer
906 views

Adjusting keyboard delay in a TTY?

When using a TTY login shell by entering e.g. Ctrl-Alt-F1 on Debian Jessie. There is inhuman fast delay, specifically I think these values are correct (250ms) root@VB-NB-Debian:~# kbdrate Typematic ...
1
vote
1answer
2k views

Sending email out at a specific time

I'd like to write emails now and have them go out at some specific time in the future, eg. when the office opens in the morning. What would be a good way to do that ? Most user agents don't support ...
0
votes
1answer
46 views

Relationship between Interface Speed and Processing times

I have a question regarding processing time delays. I want to know: is there a relationship between the rate of data packets received and their processing time at the receiving host, or is the ...
0
votes
1answer
734 views

Password fail delay is too long - Linux Mint 17

The delay after a failed password is very long. In /etc/pam.d/login, FAIL_DELAY is configured as auth optional pam_faildelay.so delay=3000000 however, actual delay is about 12s. This ...
1
vote
1answer
690 views

Minimize game server delay with iptables

I have a debian 7 server hosted by Google Cloud running a game server and a rails server. The rails server run on port 80 and the game server on port 8000. I want to apply a network rule that allow ...
2
votes
1answer
187 views

I WANT procmail to delay one user's e-mail 10 seconds then continue processing

I use procmail. I wrote my own spam filter in procmail (along with many many recipes). I know this is sounds counter-intuitive but I want to intentionally delay one user's e-Mail about 5 or 10 ...
8
votes
1answer
5k views

delay to get password prompt when ssh'ing to a public server

i have a server (debian 7) setup in my university with public ip. when I ssh into the system (from outside the campus), I get a weird delay of 5-10 seconds before I get the password prompt. Why is ...
0
votes
1answer
343 views

Initial delay in typing

I've noticed after I come back to my newly installed Fedora 20 system, there's a delay in typing. For example, if I have a terminal window open, and I leave it alone for a few minutes and return, ...
3
votes
1answer
7k views

Understand debug messages from sshd [closed]

I'm using OpenSSH_5.8p1 in my machine,I'm connecting my machine using putty client but its slower so I have ran sshd in debug mode and found following messages can any one explain me in detail about ...
2
votes
1answer
8k views

How to make some initscript start after delay at boot?

I want to run a thing that may disrupt the system (or remote access to it) if something goes wrong (for example, misconfiguration). To reduce problems I want to have a "grace period" after the system ...