Linked Questions

I came across this . And then remembered seeing this something back. Could anybody elaborate is there any need for a user to ever flush the caches or it's only need is when you want to benchmark ...

The Linux kernel implements the page cache to accelerate I/O operations. It would be helpful to be able to turn off and on the page cache for research and testing. How can the Linux page cache be ...

I am aware that sync command flushes the dirty cache into disk. I have run free command first, then sync, and then free again. The result of latter free command shows more free memory available than ...

I am writing a batch script to sort through gigs and gigs of data. All of the data is text but the script will take a long long time to execute. I would like to give some visual indication that the ...

I have a process that reads data from a hardware device using DMA transfers at a speed of ~4 * 50MB/s and at the same time the data is processed, compressed and written to a 4TB memory mapped file. ...

After reading this link: How do you empty the buffers and cache on a Linux system?, I know that there are some commands that can help us to empty the buffers and cache of the OS. But I'm not sure if ...

I am working on ARM-based processor (OS version: Linux 3.4.35) and I need to analyze the processor's performance while some processes are running, by typing top command, I can see some statistics but ...

I'm reading this article on clearing buffer/cache from my new Linux VMs since they're taking a full 1/3rd of my RAM, so I ran this: sync; echo 1 > /proc/sys/vm/drop_caches This immediately fixed ...

My buffer memory in server got increased after taking backups from multiple servers using rsync. This disk got almost full, removed the backups. As far as I understand buffers shoot up if we perform a ...

I use a laptop for work and therefore I only do a suspend to RAM rather than shutdown everyday. so I do not have to start each application again every day. after some days of "run time" I ...

I'm trying to read the contents of a file using the file's inode. This works fine: echo "First line" > data.txt sync sudo debugfs -R "cat <$(stat -c %i data.txt)>" /dev/...

The following command takes about 10 minutes to output the result find . -name "muc*_*_20160920_*.unl*" | xargs zcat | awk -F "|" '{if($14=="20160920100643" && $22=="567094398953") print $...

I have 8GB RAM, and use my PC (Debian 10, KDE plasma 5.14.5) "normally" but with many programs running in parallel: Firefox (≈ 250 Tabs) Chromium (10 Tabs) Thunderbird 10x Okular 2x Pycharm ...

I develop a system (x86_64 based) that runs Linux (Ubuntu 14.04.3) and has several pieces of custom built hardware connected. I have written drivers and control software for the custom hardware. ...

I became curious when I was diffing two large (>326MB) files, and noticed that the second run took much less time than the first. This was frustrating, since I was trying to time the second run, to ...