set bandwidth API purpose - linux-kernel

According to the following change:
qseecom: Add API to set bandwidth for CE HW
Want to understand what is CE clk ? What is it responsible for ?
Thanks,

Related

hyperledger fabric optimizing throughput in Java

I am trying to get high throughput(TPS) in Hyperledger fabric.
The performance is 63 Tx per sec. so far. I have done some works with batch-timeout and batch-size parameters. However, I am still working on concurrency(parallel validation) and cacheing in the core.yaml.
Problem:
The direct editing with the parameters in the core.yaml does not change any performance at all.
Goal:
Change parameters in the core.yaml file.
I will be really glad to get your any advice or recommendation to improve throughput of Hyperledger Fabric.
Please help.
Thank you.

M210 DJI Drone expansion port access for payload release

I would like to add a payload release system on the Matrice M210 drone. I have seen the diagram for the expansion port on the rear of the machine. There is a note in the documentation that says * coming soon. I am not clear if it referring to this functionality or something else on the page. Has anyone mapped an external device and been able to access it via Cedence radio?
Any advice or information on how to accomplish this task would be much appreciated.
If you refer to the GPIO pins, the Mobile SDK controls for them are coming soon.
You can achieve this today using the OnboardSDK.

How to detect M7 co-processor sensoring in an application

I just wanted to make clear. I am using accelerometer in my app, So do we need to add any other framework or method to receive iPhone5s's M7 co-processor data? Is that enough of using CoreMotion framework with Method
-(void)startAccelerometerUpdatesToQueue:(NSOperationQueue *)queue withHandler:(CMAccelerometerHandler)handler;
to receive data from M7 co-processor?Or am I need to include any extra method or framework to get data in iPhone 5s?
Thanks in Advance.
As said here:
The Apple M7 and M8 co-processors collect, process, and store sensor
data even if the device is asleep, and applications can retrieve data
when the device is powered up again. This reduces power draw of the
device and saves battery life.
So you don't need to add any other framework.
You can detect the M7 equipped device using [CMMotionActivityManager isActivityAvailable] - check the official documentation.

Write my own OPC

I have some questions about implementation of OPC :
Can I write my own OPC server and OPC client for a PLC that want to send and receive real-time data to the server ??
How much is easy for a undergraduate student ??!!
Or can I use free software for the server (for example "MartikonOPC Explorer") and for the client to connect to the PLC ??
Which Programming language can I use ?
======================================
review :
PLC model : Delta
Can I write my own OPC server and OPC client for a PLC that want to
send and receive real-time data to the server ??
yes you can, sounds as if you only need OPC DA i.e. read/write of values.
How much is easy for a undergraduate student ??!!
It depends, if you want to implement OPCDA 3.0 then you would need some knowledge about COM which could be daunting if you haven't worked with it before. Normally when you create a OPC server you would use a framework from some vendor e.g. Matrikon but if you are on a tight budget you may need to do it all yourself.
Or can I use free software for the server (for example "MartikonOPC
Explorer") and for the client to connect to the PLC ??
You can use the Matrikon OPC explorer to connect to your OPC server but normally you want to embedd your client code in a program and do something with the values, the explorer is more for testing
Which Programming language can I use ?
For the server part C/C++, for the client part you are more flexible, any language that supports COM
Alternatively you could implement an OPC UA server instead, OPC UA is platform independent and pretty much language independent.
See more at opcfoundation.org
Depending on your skills the answer can be yes or no. The OPC foundation holds the standards and these are available to members.
Keep in mind that PLC's don't use OPC for communication, an OPC server uses the PLC manufacturers propriety protocol to be able to "serve" data to clients using OPC protocol.
To properly answer this question it needs a lot of clarification, how much is easy for a undergraduate student depends on what you study.
Which programming language to use, any you can find, what's your prefference.
Python is easy way and can do.
Only create global communication module (global for reuse).
Some problems :
1- More PLC brand use BUFFER for access (Delta not use).Need register first later can read (all EV values).
2-All inside a thread (not only one, per node threading)
3-Your resolution is 1/10 sec(for modbus over serial)
4-Need write a strong security program in PLC (otherwise claim a lot risk!)
5-Minimal communication line is 2(two)(when lose one, use other).
All programming language is a baby. If you feed a lot and love it, groove up faster.You can do ! Don't forget you got a baby!
Last time I checked Delphi was the only one to have both free OPC client and OPC server examples. I have made both OPC DA 2.04 servers and clients using sources from this page.

What is the equivalent Drupal 7 module for the W3 Total Cache Wordpress plugin?

Looking for modules to speed up a Drupal 7 with Drupal Commerce install on a Media Temple Virtual host.
Open topic!
Maybe Boost is the one you are searching for.
http://drupal.org/project/boost
make sure you configure the core cache for D7 which is better than D6. You can also use varnish in front of D7 without the varnish module (the module just helps facilitate when to invalidate some blobs and do some monitoring from within drupal).
However, unless you get creative with serverside includes, Varnish and other static cache systems probably won't help you much with a commerce system (once someone is logged in you can't do as much simple caching), so I would look at memcached which does have a recommended D7 release and is close to a full 1.0 release ( http://drupal.org/project/memcache )

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