How To Install userspace-rcu on CentOS 8

userspace-rcu is RCU (read-copy-update) implementation in user-space RCU (read-copy-update) implementation in user-space

Introduction

In this tutorial we learn how to install userspace-rcu on CentOS 8.

What is userspace-rcu

This data synchronization library provides read-side access which scales linearly with the number of cores. It does so by allowing multiples copies of a given data structure to live at the same time, and by monitoring the data structure accesses to detect grace periods after which memory reclamation is possible. userspace-rcu 0.10.1 4.el8 x86_64 101 k userspace-rcu-0.10.1-4.el8.src.rpm baseos RCU (read-copy-update) implementation in user-space http LGPLv2+ This data synchronization library provides read-side access which scales linearly with the number of cores. It does so by allowing multiples copies of a given data structure to live at the same time, and by monitoring the data structure accesses to detect grace periods after which memory reclamation is possible.

We can use yum or dnf to install userspace-rcu on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install userspace-rcu.

Install userspace-rcu on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install userspace-rcu using dnf by running the following command:

sudo dnf -y install userspace-rcu

Install userspace-rcu on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install userspace-rcu using yum by running the following command:

sudo yum -y install userspace-rcu

How To Uninstall userspace-rcu on CentOS 8

To uninstall only the userspace-rcu package we can use the following command:

sudo dnf remove userspace-rcu

userspace-rcu Package Contents on CentOS 8

/usr/lib/.build-id
/usr/lib/.build-id/0b
/usr/lib/.build-id/0b/90ba285847cff37b84da67c10b2974ba0860f1
/usr/lib/.build-id/2d
/usr/lib/.build-id/2d/2884903656e622c6b946751f8db033e480fffc
/usr/lib/.build-id/38
/usr/lib/.build-id/38/3e6e12a81aa750589633f972101395b4e9328a
/usr/lib/.build-id/49
/usr/lib/.build-id/49/8426140eed5f50793e1338d1199d8bc2060ef0
/usr/lib/.build-id/7d
/usr/lib/.build-id/7d/cecfacf7ca2aad3a62399efaa1bd84f286c32f
/usr/lib/.build-id/b4
/usr/lib/.build-id/b4/77e9d91a45488b889190d3e4555c3beb8dd9e1
/usr/lib/.build-id/f5
/usr/lib/.build-id/f5/b791efa95fb74228f9ea222e44ff590507a4df
/usr/lib64/liburcu-bp.so.6
/usr/lib64/liburcu-bp.so.6.0.0
/usr/lib64/liburcu-cds.so.6
/usr/lib64/liburcu-cds.so.6.0.0
/usr/lib64/liburcu-common.so.6
/usr/lib64/liburcu-common.so.6.0.0
/usr/lib64/liburcu-mb.so.6
/usr/lib64/liburcu-mb.so.6.0.0
/usr/lib64/liburcu-qsbr.so.6
/usr/lib64/liburcu-qsbr.so.6.0.0
/usr/lib64/liburcu-signal.so.6
/usr/lib64/liburcu-signal.so.6.0.0
/usr/lib64/liburcu.so.6
/usr/lib64/liburcu.so.6.0.0
/usr/share/doc/userspace-rcu
/usr/share/doc/userspace-rcu/ChangeLog
/usr/share/doc/userspace-rcu/LICENSE
/usr/share/doc/userspace-rcu/README.md
/usr/share/doc/userspace-rcu/gpl-2.0.txt
/usr/share/doc/userspace-rcu/lgpl-2.1.txt
/usr/share/doc/userspace-rcu/lgpl-relicensing.txt
/usr/lib/.build-id
/usr/lib/.build-id/10
/usr/lib/.build-id/10/a4f45f78c7004925d9c74271da3a68d2a7e2c2
/usr/lib/.build-id/42
/usr/lib/.build-id/42/7aac54cd4a141c536c98270670b0ca1ba8f9fb
/usr/lib/.build-id/5c
/usr/lib/.build-id/5c/5f3ee23d85c4450b64d36b5312c9a61ac10284
/usr/lib/.build-id/6b
/usr/lib/.build-id/6b/40d0705fd2ced9e9da4d693a844d022fc75e25
/usr/lib/.build-id/82
/usr/lib/.build-id/82/7f5fa7498ac4e0aa62b56e6a02fd921af0754b
/usr/lib/.build-id/a4
/usr/lib/.build-id/a4/91568ff5d6027859e396b39b0c90d8554c7fab
/usr/lib/.build-id/ab
/usr/lib/.build-id/ab/d0bd0aac121a60e03c080cbf2cf9e8c8e3ed6b
/usr/lib/liburcu-bp.so.6
/usr/lib/liburcu-bp.so.6.0.0
/usr/lib/liburcu-cds.so.6
/usr/lib/liburcu-cds.so.6.0.0
/usr/lib/liburcu-common.so.6
/usr/lib/liburcu-common.so.6.0.0
/usr/lib/liburcu-mb.so.6
/usr/lib/liburcu-mb.so.6.0.0
/usr/lib/liburcu-qsbr.so.6
/usr/lib/liburcu-qsbr.so.6.0.0
/usr/lib/liburcu-signal.so.6
/usr/lib/liburcu-signal.so.6.0.0
/usr/lib/liburcu.so.6
/usr/lib/liburcu.so.6.0.0
/usr/share/doc/userspace-rcu
/usr/share/doc/userspace-rcu/ChangeLog
/usr/share/doc/userspace-rcu/LICENSE
/usr/share/doc/userspace-rcu/README.md
/usr/share/doc/userspace-rcu/gpl-2.0.txt
/usr/share/doc/userspace-rcu/lgpl-2.1.txt
/usr/share/doc/userspace-rcu/lgpl-relicensing.txt

References

Summary

In this tutorial we learn how to install userspace-rcu on CentOS 8 using yum and dnf.