Top "Huge-pages" questions

Hugepages is a mechanism that allows the Linux kernel to utilize the multiple page size capabilities of modern hardware architectures.

Solving Redis warnings on overcommit_memory and Transparent Huge Pages for Ubuntu 16.04 on EC2

On a fresh Ubuntu 16.04 EC2 instance the warnings appear like so: WARNING overcommit_memory is set to 0! Background save may …

ubuntu amazon-ec2 redis sysctl huge-pages
How do I enable transparent huge pages by default on Ubuntu?

How do I enable transparent huge pages by default on Ubuntu? ~$ uname -a Linux yoda 3.5.0-23-generic #35~precise1-Ubuntu SMP …

ubuntu huge-pages
How to release hugepages from the crashed application

I have an application that uses hugepage and the application suddenly crashed due to some bug. After crashing, since the …

linux memory-management huge-pages
Java periodically hangs at futex and very low IO output

Currently my application periodically blocked in IO , and the output is very low . I use some command to trace the …

java io futex huge-pages
Cannot create JVM with -XX:+UseLargePages enabled

I have a Java service that currently runs with a 14GB heap. I am keen to try out the -XX:+…

jvm debian jvm-arguments large-object-heap huge-pages
Using mmap and madvise for huge pages

I want to allocate memory on the hugepages being used by a Linux machine. I see that there are two …

c linux memory-management mmap huge-pages
No free hugepages reported in hugepages when running DPDK helloworld example

I downloaded and built dpdk-stable-16.11.4 version (using the x86_64-native-linuxapp-gcc target). I'm running Ubuntu 16.04.3 LTS. After setting up hugepages according …

linux dpdk huge-pages
Hugepages exist, but are not free nor reserved. Or, how do I free hugepages?

I'm running an SPDK experiment (which uses DPDK, which in turn uses hugepages) and it was working yesterday. I'm running …

dpdk huge-pages
How to use Linux hugetlbfs for shared memory maps of files?

I have a program which uses mmap() and shared memory to efficiently access a large database file. I would like …

linux memory-mapped-files vfs huge-pages