I would stop worrying about the VIRT thing. Virtual Memory Usage from Java under Linux, too much memory used I suspect the top page is allocated for vsyscall purposes (see What are vdso and vsyscall?). Meaning that whilst your process has a 16Gb range of virtual memory mapped, it certainly isn’t using anything like that … Read more
Docker shares resources at kernel level. This means application logic is in never replicated when it is ran. If you start notepad 1000 times it is still stored only once on your hard disk, the same counts for docker instances. If you run 100 instances of the same docker image, all you really do is … Read more
After a very brief analysis it seems that issue can be related to CodeAnalysis implementation which is enabled by default and I could not find any configuration file option which can disable it. Here are reference search results. I was however able to successfully disable CodeAnalysis VS plugin for the time being and it seems … Read more
For now, this is the best way. this.setState(previousState => ({ myArray: […previousState.myArray, ‘new value’] }));
Stack A stack, in this context, is the last in, first out buffer you place data while your program runs. Last in, first out (LIFO) means that the last thing you put in is always the first thing you get back out – if you push 2 items on the stack, ‘A’ and then ‘B’, … Read more
Without the memory keyword, Solidity tries to declare variables in storage. Lead Solidity dev chriseth: “You can think of storage as a large array that has a virtual structure… a structure you cannot change at runtime – it is determined by the state variables in your contract”. That is, the structure of storage is set … Read more
Garbage collection is typically used periodically or on demand, like if the heap is close to full or above some threshold. It then looks for unused variables and frees their memory, depending on the algorithm. Rust would know when the variable gets out of scope or its lifetime ends at compile time and thus insert … Read more
Since you are running Spark in local mode, setting spark.executor.memory won’t have any effect, as you have noticed. The reason for this is that the Worker “lives” within the driver JVM process that you start when you start spark-shell and the default memory used for that is 512M. You can increase that by setting spark.driver.memory … Read more
some time ago I stole this little nugget from here: sort( sapply(ls(),function(x){object.size(get(x))})) it has served me well
If the cache line containing the byte or word you’re loading is not already present in the cache, your CPU will request the 64 bytes that begin at the cache line boundary (the largest address below the one you need that is multiple of 64). Modern PC memory modules transfer 64 bits (8 bytes) at … Read more