RHEL各个版本的技术容量与限制

来源于:

https://access.redhat.com/articles/rhel-limits

What can Red Hat® Enterprise Linux® do? Find out in this quick-glance chart of the supported and theoretical 1 limits of the platform.

SpecificationVersion 3Version 4Version 5Version 6Version 7Maximum logical CPUs 2     x8616323232N/A6Itanium 28256 [512]256 [1024]N/A6N/A6x86_64864 [64]160 [255]384 [4096]17384 [5120]17POWER864 [128]128128192 [2048]System z64 (z900)64 (z10 EC)64 (z13)64 (z13)256 (z13)Maximum memory5     x8664GB364GB316GB416GB4N/A6Itanium 2128GB2TB2TBN/A6N/A6x86_64128GB256GB [1TB]1TB12TB [64TB]1512TB [64TB]16POWER64GB128GB [1TB]512GB [1TB]2TB2TBSystem z256GB (z900)1.5TB (z10 EC)4TB (z13)4TB (z13)10TB (z13)Maximum number of device paths ("sd" devices)      256256 131,024 13,148,192 13,1410,000 13,14Required minimums     x86256MB256MB512MB minimum/1 GB per logical CPU recommended512MB minimum/1 GB per logical CPU recommendedN/A6x86_64256MB256MB512MB minimum/1 GB per logical CPU recommended1GB minimum/1 GB per logical CPU recommended1GB minimum/1 GB per logical CPU recommendedItanium 2512MB512MB512MB/1 GB per logical CPU recommendedN/A6N/A6POWER512MB512MB1GB minimum/2GB recommended2GB minimum/2GB required per install2GB minimum/2GB required per installMinimum diskspace800MB800MB1GB minimum/5GB recommended1GB minimum/5GB recommended10GB minimum/20GB recommendedFile systems and storage limits     Ext3 - Maximum file size2TB2TB2TB2TB2TBExt3 - Maximum file system size2TB8TB16TB16TB16TBExt3 - Maximum subdirectories3200032000320003200032000Ext3 - Maximum symlink depth88888Ext3 - ACL supportYesYesYesYesYesExt4 - Maximum file size----16TB16TB16TBExt4 - Maximum file system size----16TB [1EB]16TB [1EB]50TB [1EB]Ext4 - Maximum subdirectories----65000/unlimited65000/unlimited65000/unlimitedExt4 - Maximum symlink depth----888Ext4 - ACL support----YesYesYesGFS - Maximum file size2TB16TB [8EB]16TB [8EB]7N/AN/AGFS - Maximum file system size2TB16TB [8EB]16TB [8EB]7N/AN/AGFS2 - Maximum file size----100TB [8EB]100TB [8EB]100TB [8EB]GFS2 - Maximum file system size----100TB [8EB]100TB [8EB]100TB [8EB]XFS - Maximum file size----100TB [8EB]100TB [8EB]500TB [8EB]XFS - Maximum file system size----100TB [16EB]300TB [16EB]18500TB [16EB]XFS - Maximum subdirectories----unlimitedunlimitedunlimitedXFS - Maximum symlink depth----888XFS - ACL supportN/AN/AYesYesYesMaximum Boot LUN size (BIOS)----2TB2TB102TB10Maximum Boot LUN size (UEFI)----N/A32bit (i686) - 2TB, 
64bit - 16TB (tested limit)50TBMaximum x86 per-process virtual address spaceApprox. 4GBApprox. 4GBApprox. 3GB4Approx. 3GB4N/A6Maximum x86_64 per-process virtual address space 512GB2TB128TB128TBKernel and OS features     Kernel foundationLinux 2.4.21Linux 2.6.9Linux 2.6.182.6.32 - 2.6.343.10Compiler/toolchainGCC 3.2GCC 3.4GCC 4.1GCC 4.4GCC 4.8.2Languages supported1015192222NIAP/CC certified11Yes (3+)Yes (4+)Yes (4+)Yes (4+)Under Evaluation (4+)Common Criteria certified KVM11----EvaluatedEvaluatedUnder EvaluationIPv6----Ready Logo Phase 2Ready Logo Phase 2Under EvaluationFIPS certified11----Yes (7 modules)Yes (8 modules)Under Evaluation (9 modules)Common Operating Environment (COE) compliantYesYesN/AN/AN/ALSB-compliantYes - 1.3Yes - 3Yes - 3.1Yes - 4.0Under Evaluation (4.1)GB18030NoYesYesYesYesClient environment     Desktop GUIGnome 2.2Gnome 2.8Gnome 2.16Gnome 2.28Gnome 3.8GraphicsXFree86X.orgX.org 7.1.1X.org 7.4X.org 7.7OpenOfficeV1.1V1.1.2V2.0.4 12V3.2 12LibreOffice V4.1.4 12Gnome EvolutionV1.4V2.0V2.8.0V2.28V3.8.5Default browserMozillaFirefoxFirefox 1.5 12Firefox 3.6 12Firefox 24.5 12

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Legend: Values are depicted as tested/supported [theoretical] above.

Notes:
1. Supported limits reflect the current state of system testing by Red Hat and its partners for mainstream hardware. Systems exceeding these supported limits may be included in the Hardware Catalog after joint testing between Red Hat and its partners. If they exceed the supported limits posted here, entries in the Hardware Catalog will include a reference to the details of the system-specific limits and are fully supported. In addition to supported limits reflecting hardware capability, there may be additional limits under the Red Hat Enterprise Linux subscription terms. Supported limits are subject to change as ongoing testing completes.
2. Red Hat defines a logical CPU as any schedulable entity. So every core/thread in a multicore/thread processor is a logical CPU.
3. The "SMP" kernel supports a maximum of 16GB of main memory. Systems with more than 16GB of main memory use the "Hugemem" kernel. In certain workload scenarios it may be advantageous to use the "Hugemem" kernel on systems with more than 12GB of main memory.
4. The x86 "Hugemem" kernel is not provided in Red Hat Enterprise Linux 5 or 6.
5. 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.
6. Red Hat Enterprise Linux 6 does not include support for the Itanium 2 architecture. Red Hat Enterprise Linux 7 does not include support for the Itanium 2 and 32-bit x86 architectures.
7. If there are any 32-bit machines in the cluster, the maximum gfs file system size is 16TB. If all machines in the cluster are 64-bit, the maximum size is 8EB.
8. Officially support 125 CPUs across the entire machine.
9. Requires Intel EPT and AMD RVI technology support.
10. UEFI and GPT support required for more that 2TB boot LUN support (https://access.redhat.com/kb/docs/DOC-16981).
11. Get security certification details.
12. Firefox, Thunderbird, and OpenOffice applications will be updated during the life cycle.
13. Larger numbers are possible, depending on testing and support by the specific hardware vendor. For example, EMC supports up to 8,192 device paths on Red Hat Enterprise Linux 5. Consult your hardware vendor to determine their limit, and confirm with your Red Hat support representative. In no case will Red Hat support a limit that exceeds the limit supported by the hardware vendor.
14. It may be necessary to increase certain driver parameters to reach these limits. Consult with your Red Hat support representative.
15. Red Hat Enterprise Linux 6.7 is required for support of 12TB of RAM. Red Hat Enterprise Linux 6.6 can support up to 6TB of RAM. Previous versions of Red Hat Enterprise Linux 6, starting with Red Hat Enterprise Linux 6.3, support up to 3TB of RAM. Versions of Red Hat Enterprise Linux prior to Red Hat Enterprise Linux 6.3 support up to 1TB of RAM.
16. Red Hat Enterprise Linux 7.2 is required for support of 12TB of RAM. Red Hat Enterprise Linux 7.1 can support up to 6TB of RAM. Previous versions of Red Hat Enterprise Linux 7 (i.e. Red Hat Enterprise Linux 7.0) support up to 3TB of RAM.
17. Red Hat Enterprise Linux 7.2 or newer, or Red Hat Enterprise Linux 6.7 or newer, is required for 384 CPU support. The previous maximum supported CPU count for earlier versions was 288 CPUs. Also, for 7.2 or newer, please refer to the following Red Hat Knowledgebase article: Memory swap occurs while the pagecache is reclaimed.
18. Red Hat Enterprise Linux 6.8 or newer is required for 300TB XFS filesystem support on RHEL 6.x. The previous maximum supported XFS filesystem size in RHEL 6.7 and earlier was 100TB.