First, let's find out what throttle is.
1. Define
If you tighten the faucet until the water is flowing in the form of a drop, you will see that every once in a while, there will be a drop.
That is to say, pre-set an execution cycle, execute the action when the time of the call is greater than or equal to the execution cycle, and then move on to the next new cycle.
Interface Definition:
* Frequency control return
: Whitelist want to run Sina Meager, UC browser, mobile phone side into these applications, the first use of the cue box off, remember to check the option of never prompt to avoid running monkey can not be normal test.Step 8: Connect your phone to your computer and open adb.Step 9: Type adb shell, enter after enteringMonkey--pkg-whitelist-file/mnt/sdcard/whitelist.txt--throttle--ignore-crashes--ignore-timeouts-- Ignore-security-exceptions--ignore-nati
browser may need to draw some pixels in these layers (sometimes referred to as the composition layer). By grouping elements, when the content of a layer changes, we only need to update the structure of that layer, and simply redraw the part that changes in the render layer structure without having to redraw it completely. Obviously, if when you roll, like a parallax website (poke me look) so something moves, it's possible that multiple layers lead to large areas of content adjustment, which lea
) are continually re-queued.Among them, user scroll and resize behavior (that is, sliding the page and changing the window size) will cause the page to constantly re-render.When you scroll the page, the browser may need to draw some pixels in these layers (sometimes referred to as the composition layer). By grouping elements, when the content of a layer changes, we only need to update the structure of that layer, and simply redraw the part that changes in the render layer structure without havin
re-render.When you scroll the page, the browser may need to draw some pixels in these layers (sometimes referred to as the composition layer). By grouping elements, when the content of a layer changes, we only need to update the structure of that layer, and simply redraw the part that changes in the render layer structure without having to redraw it completely. Obviously, if when you roll, like a parallax website (poke me look) so something moves, it's possible that multiple layers lead to larg
directly suspended animation, such a user experience is very bad. What we need to do is to reduce the frequency of triggering the callback, such as Let it 500ms trigger once, or 200ms, or even 100ms, this threshold value can not be too big, too big drag will be distorted, not too small, too small version of the browser may be suspended animation, such a solution is function throttling, The English name is called " Throttle". The core of the function
This article mainly introduces how to use cgroups to manage disk I/O in Linux. For more information, see
Linux cgroups can also restrict and monitor disk io of processes. This function is implemented through the blkio subsystem.
There are many things in the blkio subsystem. However, most of them are read-only status reports, and only the following are writable parameters:Copy codeThe code is as follows:Blkio. throttle. read_bps_deviceBlkio.
(URL). Scheme:proxy}
Opener.add_handler (urllib2. Proxyhandler (proxy_params))
try:
HTML = opener.open (Request). Read ()
except URLLIB2. Urlerror as E:
print ' Download error: ', E.reason
html = None
if num_retries > 0:
if Hasattr (E, ' Cod E ') and
3. Download speed limit
When we crawl the site too fast, may be banned or caused by the risk of server overload. To reduce these risks, we can add a delay between two downloads to limit
value with small propeller, small kv value with large propeller4. ESC: Electronic governor, also known as the Motor Drive module, is mainly used to control the motor start and stop and speed, by changing the direction of the internal current of the fixed coil, to ensure that the force between it and the permanent magnet is mutually exclusive, continuous rotation to continue.5. Battery: model of lithium battery needs a strong discharge capacity, the general use of C to do units, which is the dif
sequence.
-- Throttle Insert a fixed delay between events. This option can reduce the execution speed of monkey. If this option is not specified, the monkey will not be delayed and the event will be generated as quickly as possible.-- PCT-touch Adjust the percentage of touch events (a touch event is a down-up event that occurs at a single location on the screen ).-- PCT-motion Adjust the percentage of Action events (Action events are composed of a do
only after it has been stopped for a period of time.
Function throttle (method, context) {
cleartimeout (method.tid);
Method.tid = settimeout (function () {
method.call (context);
}
Application Examples:Suppose that a
function Resizediv () {
var div = document.getElementById ("mydiv");
Div.style.height = div.offsetwidth + "px";
}
Window.onresize = function (
) cleartimeout (time);
The if (immediate) {
//////////delay determines whether the function
var donow =!timer is to be executed now based on whether the time of the last triggering operation is reached;
Every time you reset the timer, you have to make sure that the
timer = settimeout (function () {
timer = null;
},delay)
can be executed at least delay seconds after each execution. Execute immediately
: Control_ Stabilize.pde , control_rtl.pde , and so on. The
_run function Converts the user's input (read-in from g.rc_1.control_in,g.rc_2.control_in) to the tilt angle (lean angle) at this time in airplane mode, the roll speed rate (rotation rates), Climb (climb rate) and so on (that is, set the target value roll\pitch\yaw\throttle). For example: althold (fixed height, altitude hold) mode converts the user's roll and pitch input to a ti
voltage, powering the flight Control Board, and receiving control signals from the flight control Board;The remote control receiver is connected to the flight controller, outputting the remote control signal and getting 5v power from the flight board."Fundamentals and Noun interpretation"1, REMOTE control chapterWhat is a channel?Channel is the remote control of the operation of the way, such as the remote control only four-axis fly up and down, then is a channel. But the four axes in the contr
This class is used in hadoop to control the data processing speed. The main idea is as follows:
1. Divide data processing into cycles (period)
2. The Bytes processed in each cycle are fixed.
3. Define the start time of each processing cycle.
4. Call the blocktransferthrottler. Throttle (long numofbytes) method after processing each time. If the corresponding bytes has been processed before the end time of the cycle, the thread wait.
CodeA
The power shortage of automobile electronic control engine means that its power is poor. Engine power shortage is a common fault phenomenon in automobiles, it produces many reasons, and involves a wide range of facets.First, insufficient engine power failure(a) fault phenomenonEngine load-free operation of the basic normal, but with load running slow acceleration, uphill weakness, accelerating pedal on the end still feel the lack of power, rotational speed is not high, up to the maximum speed.(i
experience of saving oil by manual blockIn the urban Open manual car, a lot of friends may have this feeling: the right hand is not idle, frequent start, shift, speed and deceleration. If the driver, of course, does not matter, but most drivers can not respond freely, resulting in higher fuel consumption, which should also be the experts, "the level of fuel consumption depends on driving technology."
We know that the throttle and the brakes are the t
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