Taeyoung Kim
it is certainly something that would be useful for Tizen.
Likely that time of feature should be linked with a Watchdog service
where services can register a request to be controlled.
(e.g. service xxxx, will send a hart beat every 30s).
The challenge is to define the policy of what to restart, what to kill
when to force reboot.
That type of configuration should not be done by code and cannot be static.
Could you please, create a Wiki page with your proposition and report on
this mailing list where you are ready to share your design ?
Regards
Dominig ar Foll
Senior Software Architect
Open Source Technology Centre
Intel SSG
Le 02/12/2014 09:21, 김태영 a écrit :
Samsung Enterprise Portal mySingle
Hello? I'm Taeyoung Kim.
We know that Tizen should have a module who handles system resources
such as system memory and netwrok traffic. Thus I want to suggest
the resource daemon (resourced) to handle these kinds of resources.
The followings are the main features of resourced.
1) Memory management
- resourced monitors memory status of system.
- If available memory size is low, resourced notices the situation
for applications
to release memory not used, or swaps out compressed pages of
background processes to RAM (zram).
- If available memory size is very low so that the system would not
be stable (in case of OOM),
resourced terminates some applications to secure available memory
size for the system stability.
- Memory cgroup is used for the memory management. All processes are
grouped according to
the state of the processes (foreground, background, and swapped
processes). The states of
the processes are used as a criterion for the swapping out and
terminating processes.
**
2) Network monitoring
- resourced monitors network usages of applications.
- Network usages for all applications are accounted and shows the
usages to Users
- Users can restrict their network usages not to cost a bomb.
- Users and ISPs can allow to use network for just a few application
which they want.
(ex. Map service during roaming, Messages for emergency situation)
- net_cls cgroup is used to categorize processes as a same service,
and netfilter is used
for the network monitoring and accounting. The data traffic is
restricted by iptables
with cgroup extention.
resourced will use the git path: platform/core/system/resourced
If you have any opinions or questions, Let me know.
Thank you.
- Taeyoung Kim -
Taeyoung, Kim*|*SW Engineer
System S/W Lab./ S/W Platform Team
Software R&D Center
*SAMSUNG ELECTRONICS CO., LTD.*
* Mobile*+82.10.5133.9902
* E_mail*[email protected]
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