Linked Questions

Is there any command that by using I can clean the cache in RHEL? I used this command: sync; echo 3 > /proc/sys/vm/drop_caches but it didn't work.

In Mac I use purge to free up some memory. What is equivalent to it in Linux(Ubuntu Server)? apt-get install purge gave me nothing. If you are no familiar with Mac's purge here is it's man page: ...

I remember, back from my days with Windows Vista/7, that there was a tool called memclear or memclean that would free some memory by invoking the NT garbage collection API. Probably it cleared cache ...

Following this question I can reproduce that the first time I execute a du of a directory it takes longer than if I do it just after. Where is this caching happening? How can I clean it? I would like ...

I want to make a fresh new copy of a large number of files from one local drive to another. I've read that rsync does a checksum comparison of files when sending them to a remote machine over a ...

As part of doing some cold cache timings, I'm trying to free the OS cache. The kernel documentation (retrieved January 2019) says: drop_caches Writing to this will cause the kernel to drop clean ...

I have a Debian (Buster) laptop with 8 GB RAM and 16GB swap. I'm running a very long running task. This means my laptop has been left on for the past six days while it churns through. While doing ...

Whenever I reboot my laptop, everything runs amazingly and I have a maximum of 40% memory usage (out of 8GB). However over time (~ 1 day of usage), memory usage goes up to 90%+, and the system starts ...

The output of the top command shows that 29GB of memory is used by "buff/cache". What does it mean and how I can free it? It is near to 90% of memory.

For a really big file like 1GB wc -l happens to be slow. Do we have a faster way calculating the number of newlines for a particular file?

Classical situation: I ran a bad rm and realized immediately afterwards that I had removed the wrong files. (Nothing critical and I had tolerably recent backups, but still annoying.) Knowing that ...

So, I'm trying to do some investigation on where does swap use come from in a system with high swap usage: # free total used free shared buffers cached Mem: ...

I know this is a lame question, but I want to understand why CentOS consumes my Physical memory when certain process stopped. Suppose I have opened a file of 10GB then it consumes 10GB in ram and ...

This question answers to the question on how to find the what is part of cache. However, in the fincore executable you have to pass the filename to check if it is part of cache. Is there a tools or a ...

Background My question is basically a follow-up to this question and answer, and in particular, this comment. Whenever I have to copy or rsync large amounts of files, the memory on my system tends ...