Questions tagged [realtime]
The realtime tag has no usage guidance.
42
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Synchronization concerns regarding MQTT and InfluxDB
I'm trying to implement mosquitto broker with InfluxDB.
My concern is that the data won't be stored properly, because InfluxDB is a "real-time" database and the MQTT protocol is asynchronous....
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0
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59
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Allowing untrusted clients read-only replication of public data in a redis instance?
I've got a database of publicly auditable votes, updated in real time in a redis instance. Nothing else is in that redis instance. It has been separated from related data in a second redis instance. ...
- 158
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2
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405
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How to bind static affinity for *all* Linux processes at startup?
I have one single-threaded process on server that I'd like to statically bind to one CPU core and give it all available computing power all the time (it's real-time process that is heavily affected by ...
- 363
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1
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206
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Setting nice value of all user processes in realtime based on his CPU usage
In order to balance users CPU consumption on a shared computing server, I would think it very useful if one could:
set the nice level for all processes of a user
furthermore, adapt this level in ...
- 113
1
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1
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3k
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Logstash's ElasticSearch Input Plugin should be used to output to ElasticSearch
We hope to use ElasticSearch Input Plugin from Logstash to output with ElasticSearch.
This feature has been successfully collected by MongoDB Input Plugin in real time.
However, the ElasticSearch ...
- 15
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1
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70
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Can a linux process be configured to run ANY time it is ready?
I have a process that does a small amount of work, then goes to sleep for 1-5ms. When that sleep time is up, I want that process to get the CPU IMMEDIATELY! Whatever process is already on the CPU ...
- 312
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2
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1k
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ossec realtime file monitoring only reports on first change but fullow up changes are only reported by scheduled follow up scans
we currently have some ossec agents running on windows and real time monitoring for files activated - with the following configuration on the agent site:
<syscheck>
<!-- Frequency that ...
- 19
3
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4
answers
6k
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Real-time file sync between servers with hunderd-thousands of small files
I've given the task to create two CentOS 7 servers where not only the databases will be replicated but also files. Now my problem is that there will be probably hundred-thousands of files if not a ...
- 1,028
2
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1
answer
104
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Fastest triggering of realtime anti virus scan
I have the problem, that in each backup of my mail system (File based archive on Windows Server 2012 R2), errors occur while backing up virus-infected e-mail attachment files. This is caused by the ...
- 161
5
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1
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167
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HP MSA 2040 for SVOD service
Is HP-MSA-2040 suitable for SVOD service with around 100 Terabyte of real time data short term and 1 petabyte long term?
what kind of disk is recommended for the SAN?(considering throughput and size) ...
- 51
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2
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2k
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What is the best way to sync 2 identical centos servers in real time
I am operating a centos linux server(A) and I want to create a realtime backup server(B) so whenever server A goes down server B(after the failover kicks in) will take over.
I already solved the ...
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2
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1
answer
2k
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Asterisk realtime include dialplans
I noticed that when creating a dialplan in asterisk on realtime, I cannot inlcude contexts.
So to be clear, I want to do the following:
[context1]
switch => Realtime
[context2]
include => ...
- 163
2
votes
1
answer
342
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How do I monitor file modifications of a Linux user from the user process instead of the file-system itself? [closed]
We have a requirement to fill that will give us a daily report on all the changes that were made (and who made them) through the SSH protocol; whether it be files or database resources.
Monitoring ...
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6
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1
answer
13k
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Continuously monitor the postfix Mailqueue (real time)
Is there a command to look at the Mailqueue of Postfix in real time.
I know of the commands, postqueue -p and mailq.
What I am looking for is real time monitoring of the queue. Similar to when I ...
- 63
2
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0
answers
713
views
Hardware Clock (RTC) Stuck / Will Not Increment
After we rebooted one of our servers (RHEL), we noticed that it would hang when entering GRUB. The problem was the countdown in GRUB (Booting in 5... 4......) was not counting down, and was stuck at ...
- 131
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0
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79
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Resume by RTC to guarantee software updates
I am maintaining around 100 user workstations with various software and operating systems.
I use a WSUS Server for Windows updates and I have a set of custom scripts for other software.
WSUS will ...
- 31
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1
answer
71
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Installting Real time kernel on RHEL 6.3 [closed]
I want to install Realtime kernel on Redhat 6.3 but its asking so many dependencies packages.
I am not connected to RHN. Please help
1
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1
answer
2k
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synchronous the databases at real time [duplicate]
I have two databases, one in the domain and managed by phpMyAdmin, and the other is located on the local server. I want make the local one as master and the other reside in the domain as slave. With ...
- 11
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1
answer
835
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Is the Ejabberd default DB suited for large cluster deployments? [closed]
Im setting up a cluster of Ejabberd nodes to to host 1M+ active connections.
Is the internal Mnesia database on every cluster the best solution in terms of reliability and load balancing, or would ...
- 121
-1
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2
answers
3k
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Real-time monitoring script for apache with only specific fields listed
I am real-time monitoring my website log, but would like to create a script that shows only the following in nice pretty columns.
log being used: /var/log/httpd/access_log (default log file and ...
- 13
0
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1
answer
5k
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Real-time chat with +1M users distributed backend solution on AWS [closed]
I Need to deploy a backend solution for a mass messaging iPhone app. Based on coverage previous apps we have deployed it is safe to assume we will get over 1 million signups in the first week and that ...
- 121
5
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1
answer
8k
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How do you force a process to flush the data written to an open file descriptor under Linux?
I have a binary process (with no sources available) running on an embedded Linux system. The process opens a log file (/tmp/dmaosd.log) where it logs what it's doing.
The problem is the log gets ...
- 475
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3
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89
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What framework is good for delivering data that is commonly changed in a few second and is assessed by lots of people (similar to stock quote)? [closed]
I am only familiar with php and javascript and I guess php is not good at serving large amount of concurrent request. I would be grateful if someone can introduce me to more appropriate framework for ...
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1
answer
3k
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What are some options for acquiring a free realtime Linux distribution? [closed]
By realtime I mean something that can help with fast network I/O; Low-latency and high-throughput.
- 161
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1
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953
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Reliable Multicast Programming (PGM) on Windows
I want to use the Reliable Multicast Programming (PGM) protocol on Windows.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms740125%28v=vs.85%29.aspx
I know Windows support it. However, it ...
- 111
2
votes
1
answer
2k
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RHEL - tcp_delack_min sysctl parameter missing on realtime kernels
I'm looking to modify the tcp_delack_min sysctl tunable on several RHEL/CentOS systems. It should be located at /proc/sys/net/ipv4/tcp_delack_min. I'm finding that it is missing in recent kernels. ...
- 197k
1
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4
answers
1k
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Free alternative to NI Real-Time Hypervisor?
Is there an free alternative to National Instruments' NI Real-Time Hypervisor? National Instruments provides both a Windows and Linux versions.
- 21
5
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4
answers
1k
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Realtime OS alternatives that run Windows apps?
I have an Microsoft .NET application that needs to be sped up, so it can have more deterministic round trip response times to incoming TCP/IP internet packets.
Are there any realtime builds of ...
- 1,150
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1
answer
6k
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CentOS 5 - realtime patch
Where can I download precompiled CentOS 5 kernel including realtime patch? Or I need to compile it myself (if yes, how to do that)?
- 485
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1
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2k
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Jenkins/Hudson Can we monitor realtime result of external job from Console output?
I have some external jobs need to be monitoring from central Jenkins/Hudson server. Jenkins/Hudson just send job output after it finish.
Some jobs run in very long time and we aren't sure it is ...
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2
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5
answers
7k
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Realtime File Replication with Windows Server
I am researching alternative solutions for real-time-file-replication on windows Server OS. Now we use XO Soft WAN Sync for file-replication but in the next time we want to expand our Server-location ...
- 886
2
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3
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3k
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Monitor log files in realtime, like "top" monitors processes [OS X]
Is there a command/program for OS X that allows me to hook to a file and display its changes in realtime without re-opening it, much like "top" monitors system processes in realtime?
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1
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636
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Show bytes transfered on an active connection
Is it possible to show bytes transfered over time in real-time on an active connection on the command line? I can do netstat and get the bytes at that time, but wonder if it can be adapted to show ...
- 379
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3
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321
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How to see an application network protocol communication in real time
I would like to see the protocol used by client-server application in real-time. I'm not interested in any statistics. All I want to see is the message sent by server and the client. This is FreeBSD ...
- 101
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1
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541
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IIS7 real-time NCSA logging
IIS 7 and 7.5 can do NCSA format log files very easilly simply by changing the logging format. However, it doesn't write them in real time which is useless if you're trying to do real-time analysis of ...
- 68.9k
2
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2
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5k
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linux tool for real time file replication between servers
I have a web application. It is database and file driven (database is postgresql, users upload and create files)... I would like to balance the load between two+ servers, and that means not only ...
- 582
4
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3
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2k
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Monitor multiple Linux log files in real time
I'm debugging a Linux application that allows remote jobs to be submitted, logging the output from each job in a new file. The log file paths conform to:
/joblogs/job_*/JOB.LOG
where the wild card ...
- 9,157
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4
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2k
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real-time mirroring of files (from Linux to Windows (or maybe cygwin))
How do I make it so that whenever the file blah.pdf on computer A is changed, its copy at computer B is updated? I believe I must setup some daemons on A and B.
A is a Linux system and B is a Windows ...
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8
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19k
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Realtime antivirus software for Windows Server 2008 R2
Microsoft's Forefront Client Security doesn't install on Windows Server 2008 R2. I'm talking specifically about FCS without update server that updates via Windows Update:
clientsetup /nomom
This ...
- 912
39
votes
8
answers
32k
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Colorize Monitoring of Logs
I sometimes monitor apache and php error logs using tail under FreeBSD. Is there any way to get colorized output, either using tail or some other command line app?
Alternatively, what is your ...
- 1,498
4
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8
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4k
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Tools for Monitoring Multiple Unix Based Systems [closed]
What's your suggested tool to monitor multiple Unix (Linux and OSX specifically) based systems at the same time? I need to monitor the utilization of the CPU, memory, and disks in real time and would ...
- 1,670
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13
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88k
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How to monitor a windows log file in real time? [closed]
On windows how can I easily monitor a log file and see updates to the file in real time?
Basically, same functionality like tail -f log_file on Unix systems
Platform: Windows XP/2003/2008 server
[...
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