OS Red Hat Enterprise Linux technology capabilities and limits

2021.05.13 23:44

Maximum logical CPUs

Red Hat defines a logical CPU as any schedulable entity. So every core/thread in a multicore/thread processor is a logical CPU.

Architecture	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
x86	16	32	32	32	N/A³	N/A³
Itanium 2	8	256 [512]	256 [1024]	N/A³	N/A³	N/A³
x86_64	8	64 [64]	160 [255]	448 [4096]¹³	768 [5120]¹⁴	768 [8192]
POWER	8	64 [128]	128	128	768 [2048]¹⁶	POWER8: 768 [2048] POWER9: 1536 [2048]²⁰
System z	64 (z900)	64 (z10 EC)	64 (z13)	64 (z13)	256 (z13)	340 (z14)
ARM	N/A	N/A	N/A	N/A	N/A	256

Maximum memory

The architectural limits are based on the capabilities of the Red Hat Enterprise Linux kernel and the physical hardware. Red Hat Enterprise Linux 6 limit is based on 46-bit physical memory addressing. Red Hat Enterprise Linux 5 limit is based on 40-bit physical memory addressing. All system memory should be balanced across NUMA nodes in a NUMA-capable system.

Architecture	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
x86	64GB¹	64GB¹	16GB²	16GB²	N/A³	N/A³
Itanium 2	128GB	2TB	2TB	N/A³	N/A³	N/A³
x86_64	128GB	256GB [1TB]	1TB	12TB [64TB]¹¹	12TB [64TB]¹²	24TB [64TB]
POWER	64GB	128GB [1TB]	512GB [1TB]	2TB	32TB¹⁷	POWER8: 32TB [128TB] POWER9: 64TB [128TB]²¹
System z	256GB (z900)	1.5TB (z10 EC)	4TB (z13)	4TB (z13)	10TB (z13)	16TB (z14)
ARM	N/A	N/A	N/A	N/A	N/A	1.5TB [256TB]
Maximum x86 per-process virtual address space	Approx. 4GB	Approx. 4GB	Approx. 3GB²	Approx. 3GB²	N/A³	N/A³
Maximum x86_64 per-process virtual address space		512GB	2TB	128TB	128TB	128TB
Maximum POWER per-process virtual address space						4PB¹⁹

Minimum required memory

Architecture	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
x86	256MB	256MB	512MB minimum, 1 GB per logical CPU recommended	512MB minimum, 1 GB per logical CPU recommended	N/A³	N/A³
Itanium 2	512MB	512MB	512MB, 1 GB per logical CPU recommended	N/A³	N/A³	N/A³
x86_64	256MB	256MB	512MB minimum, 1 GB per logical CPU recommended	1GB minimum, 1 GB per logical CPU recommended	1GB minimum, 1 GB per logical CPU recommended¹⁸	1.5GB minimum, 1.5GB per logical CPU recommended¹⁸
POWER	512MB	512MB	1GB minimum, 2GB recommended	2GB minimum, 2GB required per install	2GB minimum, 2GB required per install	2GB minimum, 2GB required per install
System z	512MB	512MB	512MB	512MB	1GB	1GB minimum, 2GB required for installation
ARM	N/A	N/A	N/A	N/A	N/A	2GB

Minimum required disk space

RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
800MB	800MB	1GB minimum, 5GB recommended	1GB minimum, 5GB recommended	10GB minimum, 20GB recommended	10GB minimum, 20GB recommended

File systems and storage limits

Ext3

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Maximum file size	2TB	2TB	2TB	2TB	2TB	2TB
Maximum file system size	2TB	8TB	16TB	16TB	16TB	16TB
Maximum subdirectories	32000	32000	32000	32000	32000	32000
Maximum symlink depth	8	8	8	8	8	8
ACL support	Yes	Yes	Yes	Yes	Yes	Yes

Ext4

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Maximum file size	--	--	16TB	16TB	16TB	16TB
Maximum file system size	--	--	16TB [1EB]	16TB [1EB]	50TB [1EB]	50TB [1EB]
Maximum subdirectories	--	--	65000/unlimited	65000/unlimited	65000/unlimited	65000/unlimited
Maximum symlink depth	--	--	8	8	8	8
ACL support	--	--	Yes	Yes	Yes	Yes

GFS

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Maximum file size	2TB	16TB [8EB]	16TB [8EB]⁴	N/A	N/A	N/A
Maximum file system size	2TB	16TB [8EB]	16TB [8EB]⁴	N/A	N/A	N/A
Maximum subdirectories	--	unlimited	unlimited	--	--	--
Maximum symlink depth	--	unlimited	unlimited	--	--	--
ACL support	--	Yes	Yes	--	--	--

GFS2

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Maximum file size	--	--	100TB [8EB]	100TB [8EB]	100TB [8EB]	100TB [8EB]
Maximum file system size	--	--	100TB [8EB]	100TB [8EB]	100TB [8EB]	100TB [8EB]
Maximum subdirectories	--	--	--	unlimited	unlimited	unlimited
Maximum symlink depth	--	--	--	unlimited	unlimited	unlimited
ACL support	--	--	--	Yes	Yes	Yes

XFS

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Maximum file size	--	--	100TB [8EB]	100TB [8EB]	500TB [8EB]	8EB
Maximum file system size	--	--	100TB [16EB]	300TB [16EB]¹⁵	500TB [16EB]	1PB
Maximum subdirectories	--	--	unlimited	unlimited	unlimited	unlimited
Maximum symlink depth	--	--	8	8	8	8
ACL support	N/A	N/A	Yes	Yes	Yes	Yes

Storage

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Maximum Boot LUN size (BIOS)	--	--	2TB	2TB⁷	2TB⁷	2TB
Maximum Boot LUN size (UEFI)	--	--	N/A	32bit (i686) - 2TB, 64bit - 16TB (tested limit)	50TB	8EB
Maximum number of device paths (`sd` devices)	256	256 ⁹	1,024 ^9,10	8,192 ^9,10	10,000 ^9,10	10,000 ^9,10

Kernel and OS features

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Kernel foundation	Linux 2.4.21	Linux 2.6.9	Linux 2.6.18	2.6.32 - 2.6.34	3.10	4.18
Compiler/toolchain	GCC 3.2	GCC 3.4	GCC 4.1	GCC 4.4	GCC 4.8.2	GCC 8.2.1
Languages supported	10	15	19	22	22	TBD
NIAP/CC certified	Yes (3+)	Yes (4+)	Yes (4+)	Yes (4+)	Under Evaluation (4+)	Under Discussion
Common Criteria certified KVM	--	--	Evaluated	Evaluated	Under Evaluation	--
IPv6	--	--	Ready Logo Phase 2	Ready Logo Phase 2	Under Evaluation	Under Discussion
FIPS certified	--	--	Yes (7 modules)	Yes (8 modules)	Under Evaluation (9 modules)	Under Discussion
Common Operating Environment (COE) compliant	Yes	Yes	N/A	N/A	N/A	Under Discussion
LSB-compliant	Yes - 1.3	Yes - 3	Yes - 3.1	Yes - 4.0	Under Evaluation (4.1)	Under Discussion
GB18030	No	Yes	Yes	Yes	Yes	Yes

Client environment

Feature	RHEL 3	RHEL 4	RHEL 5	RHEL 6	RHEL 7	RHEL 8
Desktop GUI	Gnome 2.2	Gnome 2.8	Gnome 2.16	Gnome 2.28	Gnome 3.8	Gnome 3.28⁸
Graphics	XFree86	X.org	X.org 7.1.1	X.org 7.4	X.org 7.7	Wayland 1.15⁸
OpenOffice	v1.1	v1.1.2	v2.0.4 ⁸	v3.2 ⁸	LibreOffice v4.1.4 ⁸	LibreOffice v6.0.6.1⁸
GNOME Evolution	v1.4	v2.0	v2.8.0	v2.28	v3.8.5	v3.28.5⁸
Default browser	Mozilla	Firefox	Firefox 1.5 ⁸	Firefox 3.6 ⁸	Firefox 24.5 ⁸	Firefox 60.5.1⁸

이 게시물을

번호	제목	날짜	조회 수
155	Linux system service bug gives you root on every major distro	2022.02.05	33
»	Red Hat Enterprise Linux technology capabilities and limits	2021.05.13	30
153	weblogic wlst 기반 암호화파일 복호화 (AES)	2021.04.06	109
152	weblogic admin 패스워드 변경 방법	2021.04.06	59
151	vi, vim ^M 제거	2021.04.02	38
150	wmic useraccount list brief	2021.04.01	28
149	Jeus7 Getting Start Guide	2021.03.09	37
148	hp-ux glance Memory Sort	2021.02.26	83
147	외부로 통신이 되지 않을 때 가지고 있는 CD-ROM으로 yum 사용하는 방법	2020.08.26	699
146	AIX 내부적인 Memory 관리 방법	2020.04.15	379
145	AIX SYSTEM CHECK SCRIPT	2020.04.10	2432
144	아파치 톰캣 AJP 프로토콜에 '고스트캣(GhostCat)' 취약점	2020.04.06	933
143	top을 통해 살펴보는 프로세스 정보들	2020.03.05	210
142	netstat	2020.02.05	233
141	Linux Cache Memory Clear	2020.01.20	333

첫 페이지 1 2 3 4 5 6 7 8 9 10 끝 페이지

쓰기

태그

진주성 블로그 방문하기