Hugepages setup OEL6

From: Mek S <sidi.bouzid.meknessy_at_gmail.com>
Date: Fri, 26 Oct 2012 21:41:31 +0200
Message-ID: <CAJX5RkTo8e8279j0RwfAr4gN2SuYt=z7AWE15w6Vzk9VrVdO2A_at_mail.gmail.com>

Hello,

I am setting up hugepages on Oracle ENterprise Linux. I used the script provided by MOS ID: 401749.1 (
http://blog.csdn.net/orion61/article/details/6698515) The ouput of the script is;
*
-bash-4.1# ./hugepages_settings.sh

This script is provided by Doc ID 401749.1 from My Oracle Support (http://support.oracle.com) where it is intended to compute values for the recommended HugePages/HugeTLB configuration for the current shared memory segments. Before proceeding with the execution please make sure that:

• Oracle Database instance(s) are up and running
• Oracle Database 11g Automatic Memory Management (AMM) is not setup (See Doc ID 749851.1)
• The shared memory segments can be listed by command: # ipcs -m

Press Enter to proceed...

---

• ERROR **

  ---

  Sorry! There are not enough total of shared memory segments allocated for HugePages configuration. HugePages can only be used for shared memory segments that you can list by command:

   # ipcs -m

of a size that can match an Oracle Database SGA. Please make sure that:

• Oracle Database instance is up and running
• Oracle Database 11g Automatic Memory Management (AMM) is not configured * I don't know why it is giving errors. This is the output of ipcs -m command;

*-bash-4.1# ipcs -m

• Shared Memory Segments -------- key shmid owner perms bytes nattch status 0x00000000 0 gdm 600 393216 2 dest 0x00000000 32769 gdm 600 393216 2 dest 0x00000000 65538 gdm 600 393216 2 dest 0x00000000 98307 gdm 600 393216 2 dest 0x00000000 29884420 grid 640 4096 0 0x00000000 29917189 grid 640 4096 0 0x5c213720 29949958 grid 640 4096 0 0x00000000 262151 oracle 600 393216 2 dest 0x00000000 294920 oracle 600 393216 2 dest 0x00000000 327689 oracle 600 393216 2 dest 0x00000000 360458 oracle 600 393216 2 dest 0x00000000 393227 oracle 600 393216 2 dest 0x00000000 425996 oracle 600 393216 2 dest 0x00000000 458765 oracle 600 393216 2 dest 0x00000000 491534 oracle 600 393216 2 dest 0x00000000 524303 oracle 600 393216 2 dest 0x00000000 557072 oracle 600 393216 2 dest 0x00000000 589841 oracle 600 393216 2 dest 0x00000000 622610 oracle 600 393216 2 dest 0x00000000 688147 oracle 600 393216 2 dest 0x00000000 786452 grid 600 393216 2 dest 0x00000000 6717461 oracle 600 393216 2 dest 0x00000000 819222 grid 600 393216 2 dest 0x00000000 851991 grid 600 393216 2 dest 0x00000000 884760 grid 600 393216 2 dest 0x00000000 917529 grid 600 393216 2 dest 0x00000000 950298 grid 600 393216 2 dest 0x00000000 983067 grid 600 393216 2 dest 0x00000000 1015836 grid 600 393216 2 dest 0x00000000 1048605 grid 600 393216 2 dest 0x00000000 1081374 grid 600 393216 2 dest 0x00000000 1114143 grid 600 393216 2 dest 0x00000000 1146912 grid 600 393216 2 dest 0x00000000 1179681 grid 600 393216 2 dest 0x00000000 1212450 grid 600 393216 2 dest 0x00000000 1277987 grid 600 393216 2 dest 0x00000000 30146596 oracle 640 4096 0 0x00000000 30179365 oracle 640 4096 0 0x00000000 29786150 grid 600 393216 2 dest 0x00000000 2818087 grid 600 393216 2 dest 0x298a3b7c 30212136 oracle 640 4096 0 0x00000000 29818921 grid 600 393216 2 dest * and ;

*-bash-4.1# cat /proc/meminfo

MemTotal:        2051804 kB
MemFree:          110912 kB
Buffers:           12440 kB
Cached:          1193832 kB
SwapCached:         9596 kB
Active:          1012540 kB
Inactive:         722100 kB
Active(anon):     743452 kB
Inactive(anon):   480700 kB
Active(file):     269088 kB
Inactive(file):   241400 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       8388604 kB
SwapFree:        8242496 kB
Dirty:                76 kB
Writeback:             0 kB
AnonPages:        519896 kB
Mapped:           255912 kB
Shmem:            695784 kB
Slab:              79116 kB
SReclaimable:      35920 kB
SUnreclaim:        43196 kB
KernelStack:        3592 kB
PageTables:        76556 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     9414504 kB

Committed_AS: 2481432 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 277776 kB
VmallocChunk: 34359454332 kB
HardwareCorrupted: 0 kB
AnonHugePages: 120832 kB

HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        8192 kB
DirectMap2M:     2088960 kB

-bash-4.1#
*
Any idea?

Thanks

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Received on Fri Oct 26 2012 - 21:41:31 CEST