pcache | keep data local for the goroutine and reduce | Caching library
kandi X-RAY | pcache Summary
kandi X-RAY | pcache Summary
PCache Cache that tries to keep data local for the goroutine and reduce synchronization overhead but keep it is safe for concurrent use. PCache does its best to cache items inside and do as little synchronization as possible, but since it is cache, there is no guarantee that PCache won't evict your item after Store.
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Top functions reviewed by kandi - BETA
- NewPCache returns a new PCache
- Load value from cache
pcache Key Features
pcache Examples and Code Snippets
Community Discussions
Trending Discussions on pcache
QUESTION
I have a working ajax function
but when I use onprogress I sometimes get half returned html and the console says Uncaught SyntaxError: Invalid or unexpected token but i continues anyway.
here the function
...ANSWER
Answered 2021-Jun-11 at 04:25I found the new javascript replacement fetch. with some digging I came up with this streamble html
It also works from within webviews android and IOS ;)
in this scenarion, I have PHP 8 and NGINX with output buffer off, so each echo is pushed while continuing the execution....
QUESTION
is it possible to do simple simple modification to this ?
the goal if to "draw" the html as it's being received.
possible scenario : a php that takes 5 to 8 seconds to execute, and push every echo while processing.
The regular fetch.then is WAITING for all lines to BEGIN the render.
I would like that it begins to render AS SOON as the data comes in.
I have nginx with output buffer off so that every echo is pushed to the browser lines (i don't have to wait for the completion of the php to start seeing the echos...) when I hit this php in a browser, I see live all lines appearing, but fetch is waiting for all lines.
here the regular fetch.then (working but waits)
...ANSWER
Answered 2021-Jun-09 at 00:43:) I found an answer
Thanks to those 2 links
https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream
Uint8Array to string in Javascript
Here a mix and tested
the php can push ANY html with CSS AND javascript that will be executable as soon as it arrives YAY ;)
The test on the php was echo some html, echo '1', sleep(3) and repear a couple times.
when I trigger that "fetchsrteam" function, I see each echo live streamed, I don't have to wait to the completion of the php. That way i can see feedbacks of what's going on (rare but possible) long php scripts that retreive info from APIs, do stuff, compute, etc.
** I also tested this from within webviews in IOS AND Android ;)
QUESTION
I have a WORKING code to take a snapshot from the webcam and save it in PHP via ajax... but when I try with a resolution higher than 2000, safari mobile on iPhone crashes, why and how to fix this ?
here , If I do getUserMedia({ video:{width: { ideal: 2096 => it's all ok
But if I fo getUserMedia({ video:{width: { ideal: 3096 => it crashes :(
HTML
...ANSWER
Answered 2021-Apr-22 at 10:37You use .toDataURL() to encode that huge image as a lossless .png file. That probably generates a multimegabyte string that you try to POST. Somewhere along the way Safari probably runs out of contiguous RAM and gacks, either on allocation or garbage collection. It's also likely your POST's payload size exceeds php's maximum.
Try .toDataURL('image/jpeg', 0.3) to get a low-quality JPEG image, which will generate a much smaller string. If that works, crank up the quality (0.3 to 0.4, 0.5, etc).
Or, better, convert your canvas to a binary Blob, then post that. It will take less space than a data URL. Something like this. Not, repeat not, debugged.
QUESTION
Related to Understanding `_mm_prefetch`.
I understood that _mm_prefetch() causes the requested value to be fetched into processor's cache, and my code will be executed while something pre-fetches.
However, my VS2017 profiler states that 5.7% is spent on the line that accesses my cache and 8.63% on the _mm_prefetch line. Is the profiler mistaken? If I am waiting for the data to be fetched, what do I need it for? I could wait in the next function call, when I need it...
On the other hand, the overall timing shows significant benefit of that prefetch call.
So the question is: is the data being fetch asynchronously?
Additional information.
I have multiple caches, for various key width, up to 32-bit keys (that I am currently profiling). The access to cache and pre-fetching are extracted into separate __declspec(noinline) functions to isolate them from surrounding code.
ANSWER
Answered 2021-Jan-23 at 10:55Substantially everything on an out-of-order CPU is "asynchronous" in the way you describe (really, running in parallel and out of order). In that sense, prefetch isn't really different than regular loads, which can also run out of order or "async" with other instructions.
Once that is understood, the exact behavior of prefetch is hardware dependent, but it is my observation that:
On Intel, prefetch instructions can retire before their data arrives. So a prefetch instruction that successfully begins execution won't block the CPU pipeline after that. However, note "successfully executes": the prefetch instruction still requires a line fill buffer (MSHR) if it misses in L1 and on Intel it will wait for that resource if not available. So if you issue a lot of prefetch misses in parallel, they end up waiting for fill buffers which makes them act quite similarly to vanilla loads in that scenario.
On AMD Zen [2], prefetches do not wait for a fill buffer if none is available. Presumably, the prefetch is simply dropped. So a large number of prefetch misses behave quite differently than Intel: they will complete very quickly, regardless if they miss or not, but many of the associated lines will not actually be fetched.
QUESTION
I'm using code from https://excelchamps.com/blog/vba-to-create-pivot-table/ to create a pivot table in a long macro I'm writing. The pivot table recently stopped working; this sub runs with no errors but there is no sign of the pivot table. Was fully functional until recently. On trying to troubleshoot I've found the PCache variable is empty, I'm assuming this is where everything is breaking down. The only thing changed since this was working is I changed the cell formats of two columns in the data range for the pivot table, however they seem irrelevant and are not being used for the pivot table.
I have also recorded my own macro to try and fix this. Manually creating the pivot table works fine but this is not a solution to my problem. The recorded macro from this does not work however. I have tried code from multiple different sites as well and have used non-variable ranges but nothing has worked.
...ANSWER
Answered 2019-Jul-22 at 19:26The reason you're not getting an error is that you've included an On Error statement, which masks any errors. If you comment out or delete that line, you'll get an error here...
QUESTION
I am automating the process of creating pivot tables in excel. The problem I have is that the pivot tables I create using my macro is way larger than the ones I create manually. Both of the pivot tables look identical but there is a great difference in file size.
As seen in the image above, the one created by my macro is about 6 times larger! I suspect that it is the way I cache for the data when creating my pivot tables. So, here is the general code I use to create my pivot tables.
...ANSWER
Answered 2018-Nov-19 at 06:52You can use the same pivotcache for multiple pivottables (assuming they're based on the same source data).
Untested:
QUESTION
How do I get the title of my pivot chart to change and show up. Pseudocode below:
...ANSWER
Answered 2018-Dec-28 at 01:53You are missing the
.Chartin yourSetElementline. So try this:
QUESTION
I have faced one issue that am not able to solve. I am going to create pivot table by VBA but some reasons the code does not work. Here is the my source VBA code. When I run the code the pivot table will not be created. Any assumtions or any mistakes? Help. Thank you in advance
...ANSWER
Answered 2020-Jan-31 at 05:33Here you call CreatePivotTable twice:
QUESTION
How to apply a macro function with three command buttons ? I tried with below code.. but returns the macro applied on different sheet.
cmd button1: browses the main raw data file.
cmd button2: vlookup data file for the main raw data file.
cmd button3: Run the macro below function on the main raw data file.
your ideas will be much helpful.. thanks in advance.
...ANSWER
Answered 2020-Jan-23 at 08:13Once you have the path of the file using the FileDialog method.
You can use the below function to open that excel and update the contents of it's worksheets.
QUESTION
I am trying to copy the data in plain format into another sheet, and do further transformation on it.
While I can create the Pivot Table, but whenever I try to copy it into another sheet, the new sheet is empty. Wondering if any experts can point me to where I'm doing this wrongly. Below are my codes for reference:
...ANSWER
Answered 2019-Dec-02 at 10:33For consistency, add the missing variables to your dim section:
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