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How many download threads should I use?
The most efficient approach for download is 2 threads: one for the UI, and the other for the download so that any pauses/dealys don’t stall the user interface.
How many thread should I use?
Ideally, no I/O, synchronization, etc., and there’s nothing else running, use 48 threads of task. Realistically, use about 95 threads may be better to exploit the max of your machine. Because: a core waits for data or I/O sometimes, so thread 2 could run while thread 1 not running.
Is Fwrite thread safe?
fwrite() is a function that writes to a FILE*, which is a (possibly) buffered stdio stream. The ISO C standard specifies it. Furthermore, fwrite() is thread-safe to a degree on POSIX platforms.
Do more threads increase download speed?
Number threads per download – the number of simultaneously running threads that independently downloads the pieces of the file. With a certain number of these streams, the apparent increase in the download speed begins to decrease, while the computing load on the computer increases.
Are parallel downloads faster?
Every additional file download increases the average speed and decreases the total time to completion. Six simultaneous downloads of roughly the same size can complete in 1/6 the elapsed time of a single download, if they all complete within a few seconds of each other.
Can you have multiple threads write at the same time?
Try the below code which I use in a similar context. You can have multiple threads write to the same file – but one at a time. All threads will need to enter a synchronized block before writing to the file. In the P2P example – one way to implement it is to find the size of the file and create a empty file of that size.
How to access a single file with multiple threads?
Accessing a single file with multiple threads. The file in particular has been created with the ‘temporary’ file attribute that encourages windows to keep the file in the system cache. This means most of the time the file read wont go near the disk, but will read the portion of the file from the system cache.
How many times can I read a file?
EDIT: The file is ~18KB pretty small. It is read from about 1,800 times. using (var stream = File.Open (“theFile.xml”, FileMode.Open, FileAccess.Read, FileShare.Read)) { } Your hard disk can only read one thing at a time. Although you have multiple threads running at the same time, these threads will all end up waiting for each other.
Is there a limit to how many threads can be running at a time?
That represents a hard limit on how many threads can be proceeding at any given time. However, if, as in your case, threads are expected to be frequently waiting for a database to execute a query, you will probably want to tune your threads based on how many concurrent queries the database can process.