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BRBACKUP slow performance after Solaris 10/09

ganimede_dignan
Contributor
0 Kudos

Hi,

after upgrade from Solaris 08/07 to Solaris 10/09 BRBACKUP is 1,5 - 2 slower.

Have you got any idea?

BRBACKUP is invoked as:

brbackup -p initSID.sap -u user/password -d disk -t offline -m all -c force -k yes -e 24 -l E

and initSID.sap:

backup_mode = all

restore_mode = all

backup_type = online

backup_dev_type = disk

backup_root_dir = /stage_prod/SID

stage_root_dir = /stage_prod/SID

compress = yes

compress_cmd = "compress -c $ > $"

uncompress_cmd = "uncompress -c $ > $"

compress_dir = /oracle/SID/sapreorg

archive_function = save_delete

archive_copy_dir = /stage_prod/SID

archive_stage_dir = /stage_prod/SID

tape_copy_cmd = dd

disk_copy_cmd = dd

stage_copy_cmd = rcp

cpio_flags = -ovB

cpio_in_flags = -iuvB

cpio_disk_flags = -pdcu

dd_flags = "obs=64k bs=64k"

dd_in_flags = "ibs=64k bs=64k"

saveset_members = 1

copy_out_cmd = "dd ibs=8k obs=64k of=$"

copy_in_cmd = "dd ibs=64k obs=8k if=$"

rewind = "mt -f $ rew"

rewind_offline = "mt -f $ offline"

tape_pos_cmd = "mt -f $ fsf $"

tape_size = 1200M

exec_parallel = 9

tape_address = /dev/rmt/0mn

tape_address_rew = /dev/rmt/0m

volume_archive = (SIDA01, SIDA02, SIDA03, SIDA04, SIDA05,

SIDA06, SIDA07, SIDA08, SIDA09, SIDA10,

SIDA11, SIDA12, SIDA13, SIDA14, SIDA15,

SIDA16, SIDA17, SIDA18, SIDA19, SIDA20,

SIDA21, SIDA22, SIDA23, SIDA24, SIDA25,

SIDA26, SIDA27, SIDA28, SIDA29, SIDA30)

volume_backup = (SIDB01, SIDB02, SIDB03, SIDB04, SIDB05,

SIDB06, SIDB07, SIDB08, SIDB09, SIDB10,

SIDB11, SIDB12, SIDB13, SIDB14, SIDB15,

SIDB16, SIDB17, SIDB18, SIDB19, SIDB20,

SIDB21, SIDB22, SIDB23, SIDB24, SIDB25,

SIDB26, SIDB27, SIDB28, SIDB29, SIDB30)

expir_period = 1

tape_use_count = 100

Regards.

Accepted Solutions (0)

Answers (6)

Answers (6)

former_member189546
Active Contributor
0 Kudos

Hello,

Please check os parameters with note....

724713 parameter settings for Solaris 10

regards,

John Feely

ganimede_dignan
Contributor
0 Kudos

Hi,

/etc/system

set pg_contig_disable=1

set noexec_user_stack=1

Project:

<SID>:1900:SAP System <SID>:<SID>adm,ora<sid>::process.max-file-descriptor=(basic,65536,deny),(priv,65536,deny);process.max-sem-nsems=(priv,2048,deny);project.max-sem

-ids=(priv,1024,deny);project.max-shm-ids=(priv,256,deny);project.max-shm-memory=(priv,18446744073709551615,deny)

Regards.

ganimede_dignan
Contributor
0 Kudos

.

Former Member
0 Kudos

>>exec_parallel = 9

Looks like you are executing 9 parallel process.

follow: http://help.sap.com/saphelp_nw70ehp1/helpdata/en/0d/d30a024a0c11d182b80000e829fbfe/frameset.htm

>>backup_root_dir = /stage_prod/SID

Is above local filesystem or network?

>>compress = yes

You are also performing compress while disk backup. to folder compress_dir = /oracle/SID/sapreorg

Former Member
0 Kudos

>>exec_parallel = 9

Looks like you are executing 9 parallel process.

follow: http://help.sap.com/saphelp_nw70ehp1/helpdata/en/0d/d30a024a0c11d182b80000e829fbfe/frameset.htm

>>backup_root_dir = /stage_prod/SID

Is above local filesystem or network?

>>compress = yes

You are also performing compress while disk backup. to folder compress_dir = /oracle/SID/sapreorg

ganimede_dignan
Contributor
0 Kudos

Hi,

>>>backup_root_dir = /stage_prod/SID

>Is above local filesystem or network?

Local, it's a ZFS

Regards.

Former Member
0 Kudos

>>>>backup_root_dir = /stage_prod/SID

>>Is above local filesystem or network?

>Local, it's a ZFS

Have you checked other parameters which I mentioned earlier.

Also can you please check ST06 for CPU, HDD usage, is there any I/O wait?

ganimede_dignan
Contributor
0 Kudos

It's an off-line backup... SAP istance is in down... and it's a SAP dedicated box, there aren't any other program/applications.

Regards.

Former Member
0 Kudos

You can use below command for CPU util: this will execute report for every 5 secs until 50 times.

sar 5 50

Former Member
0 Kudos

Hi,

What's you DB.

Mark

ganimede_dignan
Contributor
0 Kudos

ORA.

THX.

Former Member
0 Kudos

Hi,

Have you read note : 999524

Mark

ganimede_dignan
Contributor
0 Kudos

Hi,

>Have you read note : 999524

not solved

Former Member
0 Kudos

Hi,

Please check these things before up-gradation the backup size and the backup time and the backup type

As you have upgraded the O/S kindly upgrade the BR tools.

Regards

Nizam

ganimede_dignan
Contributor
0 Kudos

Hi,

>Please check these things before up-gradation the backup size and the backup time and the backup type

same database size, same number of datafiles, ecc. befeore and after Solaris upgrade.

>As you have upgraded the O/S kindly upgrade the BR tools.

try with same BRTOOLS version release and with newer release

Regards.

Former Member
0 Kudos

Most probably you also have to adjust Solaris kernel parameters.

Did you do so?

There should be SAP notes about it.

former_member188883
Active Contributor
0 Kudos

Hi,

Please use the latest brtools and SAP kernel and check the difference in backup time.

Regards,

Deepak Kori

ganimede_dignan
Contributor
0 Kudos

Hi,

>Please use the latest brtools and SAP kernel and check the difference in backup time.

already try it, no difference.

ganimede_dignan
Contributor
0 Kudos

Hi,

>Most probably you also have to adjust Solaris kernel parameters.

same kernel parameters as decribed by SAP Notes for /etc/system and for project.

Regards.

ganimede_dignan
Contributor
0 Kudos

Only this parameters are setted into /etc/system:

set pg_contig_disable=1

set noexec_user_stack=1

rootdev:/pseudo/md@0:0,0,blk

Regards.