轉自:

System Configurations and Limits for Oracle Linux Releases (Doc ID 300652.1)

APPLIES TO:

Linux OS - Version Enterprise Linux 3.0 to Oracle Linux 7.0 with Unbreakable Enterprise Kernel [3.8.13] [Release RHEL3 to OL7]

Linux x86

Linux x86-64

Linux Itanium

PURPOSE

System Configurations and Limits (Memory, CPU, Disk imitations with maximums and minimums) for Oracle Linux 3, 4, 5, 6 and the?UEK?(Unbreakable Enterprise Kernel).

SCOPE

This document is informational and intended for any user using Oracle Linux.

DETAILS

Architectures Supported

Arch \ Version

3

4

5

5+UEK

6 (9)

7

x86 (1)

Yes

Yes

Yes

No

Yes

No

x86_64 (2)

Yes

Yes

Yes

Yes (7)

Yes

Yes

ia64

No

Yes (4)

Yes (6)

No

No

No

Maximum Logical CPUs (3)

Arch \ Version

3

4

5

6

7(12)

x86

16

32

32

32

N/A

x86_64

8

64

160/255

240/4096

240/5120

ia64

N/A

256/512

256/1024

N/A

N/A

Maximum Physical Memory?(RAM)

Arch \ Version

3

4

5

5+UEK

6 (9)

7

x86

64GB

64GB

16GB (5)

16GB (5,11)

16GB (5)

N/A

x86_64

128GB

256GB / 1TB (10)

1TB (10)

2TB

6TB/64TB

6TB/64TB

ia64

N/A

2 TB

2 TB

2 TB

N/A

N/A

Maximum Default File System Size

Arch \ Version

3 (ext3)

4 (ext3)

5 (ext3)

6 (ext3/ext4)

7(ext4)

x86

2TB

8TB

16TB (Update 1)

16TB

16TB

x86_64

2TB

8TB

16TB (Update 1)

16TB

50TB

ia64

N/A

8TB

16TB

N/A

N/A

Maximum x86 (32-bit) Address Space

Arch \ Version

3

4

5

6

7

x86

approx. 4 GB

approx. 4 GB

approx. 3 GB (5)

approx. 3 GB (5)

N/A

Minimum Memory?(RAM)

Arch \ Version

3

4

5

6

7

x86

256MB

256MB

512MB

512MB

N/A

x86_64

256MB

256MB

512MB

1GB

1GB

ia64

N/A

512MB

512MB

N/A

N/A

Minimum Disk Space

Arch \ Version

3

4

5

6

7(13)

x86

800 MB

800 MB

1GB

1GB

10GB

x86_64

800 MB

800 MB

1GB

1GB

10GB

ia64

N/A

800 MB

1GB

N/A

N/A

(1) Intel 32-bit Systems in the tables above.

(2) AMD64, Intel EM64T 64-bit Systems in the tables above.

(3) Multi-core and/or hyperthreading CPUs count as a single CPU in the table above.

(4) Update 7 is available as of August 1, 2008

(5) Limit low because the "hugemem" kernel is not available

(6) Update 4 is available as of April, 2010

(7) Unbreakable Enterprise Kernel for x86_64 is available over Oracle Linux 5.5 and higher

(8) With latest update level

(9) With Oracle Linux 6 the default kernel is Unbreakable Enterprise Kernel on x86_64 and RHEL compatible kernel with x86 (32-bit). The limits are provided based on that.

(10) AMD64 / Intel64: On those kernels larger memory can be handled with Intel CPUs

(11) Unbreakable Enterprise Kernel for x86 is available from Oracle Linux 5.7 and higher

(12) The theoretical upper limit is 5120 logical CPUs.

(13) Although the minimum disk space required for installation is 1GB, a minimum of 5 GB is recommended.

System Configurations and Limits for Oracle Linux Releases (Doc ID 300652.1)

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