August 24, - This parameter is platform-specific and has a default value that is best for a particular platform.
Although, in general, it is unusual to find asynchronous tasks running on the same thread, it is possible, see below for examples and it is common to find two or more tasks executing synchronously on separate threads What thread or threadsor processes, or CPUs, or indeed, what hardware, the task[s] are executed on is not relevant.
Indeed, to make this point I have edited the graphics to show this. In solving many engineering problems, the software is designed to split up the overall problem into multiple individual tasks, and then execute them asynchronously.
Inverting a matrix, or a finite element analysis problem, are good examples. In computing, sorting a list is an example. The quick sort routine, for example, splits the list into two lists, and sorts each of them by calling itself recursively. In both of the above examples, the two tasks can and often were executed asynchronously.
They do not need to be on separate threads. Even a machine with one CPU, and only one thread of execution can be coded to initiate processing of a second task before a first one has completed.
The only criterion is that the results of one task are not necessary as inputs to the other task.
As long as the start and end times of the tasks overlap, possible only if the output of neither is needed as inputs to the otherthey are being executed asynchronously, no matter how many threads are in use.
If it's on a separate machine it is on a separate thread, whether synchronous or asynchronous.What is async IO? Breadcrumb. Question and Answer. Thanks for the question, Ravi. log file parallel write 7 library cache lock "Have read in an article that the DB may need to use asynchronous IO for log files and temp files and direct IO for data files".
Mar 29, · @JasonFoglia I didn't say that it wouldn't write to the file, I said it would do so synchronously, and the question specifically specified that they wanted to do so asynchronously. IO is in fact inherently asynchronous, not synchronous.
Jan 23, · For information on using Async for file access in Metro style apps, The following example demonstrates parallel processing by writing 10 text files. For each file, the WriteAsync method returns a task.
Each task is added to a list of tasks. Log in to Reply. Konstantin Tarkus. So if you use it in a high load / parallel situation and run into an exception the program can terminate and lose the file handle for the writer before all the logs have been written.
That's a bit of speculation - it could be that the writer can only write about 3k at once. Writing an asynchronous appender. You can log asynchronously with log4net, but this should be done at the appender level rather than the logger level. Log4net is synchronous until the final call to the appender and this is the point at which you can push the formatted messages out .
This article presents an overview on asynchronous file operations using C#. You can take advantage of asynchrony to perform resource-intensive I/O operations sans the need to block the main or the.