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Martin Hope
Bert
Asked: 2017-01-17 05:18:35 +0800 CST
  • 3

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 million of files with a wide variety of sizes from a few Kbytes to ~1 Gbyte.

I've read about

  • incrion
  • lysncd
  • git-annex
  • ChironFS

Now I wish to ask your experiences about any of these if you have been using it or currently using it. How is the performance doing with the file changes regarding to copies and deletions? I'm very affraid of using any rsync because my experience is that it is not very fast with a lot of small files, therefore I can't really use it for a real-time file replication. Or am I wrong? Please prove me wrong. :)

Or maybe I'll need a 3rd and 4th server as fileservers? If yes, then the question still remains: How to replicate the files between the two servers in realtime?

Cheers!

files rsync realtime
Martin Hope
Contango
Asked: 2011-05-26 12:26:22 +0800 CST
  • 5

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 Windows, or realtime OS's that will run Microsoft .NET code?

realtime
Martin Hope
gareth_bowles
Asked: 2010-01-22 17:45:41 +0800 CST
  • 4

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 represents the unique job number.

I want to be able to tail each job log, including new logs that are created after I issue the tail (or whatever) command. I thought I'd be able to do this using multitail, but I can't figure out the right set of parameters to use. For example,

multitail -q 1 "/joblogs/job_*/JOB.LOG"

seems to create a window for each new log file just the way I want, but it doesn't show any output in the file window.

Anyone know how to do this, either with multitail or another Linux tool ?

linux logging monitoring realtime tail