[IDEA] Dynamic priority process

[mk01]

(18th Jul, 2013 09:32 AM)belese Wrote:  what do you mean by netounter watch?
if it's check network activity, could we do this for a specific port?
i've check before writing the dameon, but not find.
otherwise, i've writted the daemon, redirection work fine. will do the upstart job

not only specific port, but even specific service over port - so it can not be fooled by p2p traffic on port 80 or 443.

this is all the years in kernel under netlink, counters for IPs, directions, ports, even applications which picked up the packets.

and of course on kernel level you can directly create rules, redirections, triggers etc. all the work done for 15 years.

you could have saved so much hours of work. and again, it's on kernel level, no latency, no applications, no services needed.

almost forgot, dynamic priority control of those packets and priority handling of course included ...

how could be otherwise all the routers, switches, VoIP systems could work without it. and it's all based on linux.

7 ago I was build Alcatel VoIP system for mid-size company of 250people. LINUX. all LINUX. just few lines of code licensed from CISCO.

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(18th Jul, 2013 09:32 AM)belese Wrote:  i've read a big part of the great upstart book, but misunderstood ENV and EXPORT stanzas,
is it possible to export SCREENSAVER in a job that start on screensaver, and use $SCREENSAVER in another upstart job (that start after of course)?

env will just create VARIABLE and make it available to pre/post-start/stop runs. export, will make this VARIABLE available in all jobs triggered by starting/started/stopping/stopped upstart events of that job, including all others which will be triggered by those.

if you use env VARIABLE=1, this will happen:
- VARIABLE will be created before sh spawn, so if the sh reads (gets) the VARIABLE from other place (source of an script, standard rc scritps of env in which the sh will be spawned (user related / shell related etc)) will be overwritten.

so it's like global / extern in C (if export). if env, then its like defined inside function, or better class like in python. not seen to outsiders.