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turguns's avatar
turguns
Level 5
11 years ago

need help for Memory utilization and Network speed change

Hello ALL,

Environment:

master,media server  (Redhat) Netbackup 7.1.

Client  (HPUX) Netbackup 7.1

VTL (fujitsu CS800)

 

Issue:

   When  backup process starts on client (as per schedul) affecting its performance.

Can you clarify about how to  change the buffer size and  decrease the network speed ex.20MB/s

I found the article about similar issue on forum here https://www-secure.symantec.com/connect/forums/netbackup-memory-utilization

 .But on our client machine under /usr/openv/netbackup/db/config/ is empty.

 

The following is client machines cpu/ memory info.

bash-3.2# uname -a
HP-UX gcrmdb01 B.11.31 U ia64 2139938236 unlimited-user license

bash-3.2# top
System: gcrmdb01                                      Tue Feb  4 18:09:02 2014
Load averages: 0.01, 0.00, 0.00
236 processes: 192 sleeping, 44 running
Cpu states:
CPU   LOAD   USER   NICE    SYS   IDLE  BLOCK  SWAIT   INTR   SSYS
 0    0.01   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%
 1    0.01   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%
 2    0.01   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%
 3    0.01   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%
 4    0.01   0.0%   0.0%   4.0%  96.0%   0.0%   0.0%   0.0%   0.0%
 5    0.01   1.0%   0.0%   0.0%  99.0%   0.0%   0.0%   0.0%   0.0%
 6    0.00   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%
 7    0.01   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%
---   ----  -----  -----  -----  -----  -----  -----  -----  -----
avg   0.01   0.0%   0.0%   0.0% 100.0%   0.0%   0.0%   0.0%   0.0%

System Page Size: 4Kbytes
Memory: 4148868K (1624192K) real, 5758612K (2763152K) virtual, 266148K free  Page# 1/11

CPU TTY    PID USERNAME PRI NI   SIZE    RES STATE    TIME %WCPU  %CPU COMMAND
 4   ?      99 root     152 20  2304K  2048K run      0:33  0.63  0.62 pagezerod
 2   ?      95 root     152 20  2016K  1792K run     48:16  0.50  0.50 vxfsd
 0   ?   20599 oracle   152 20   563M   101M run      0:47  0.43  0.43 java
 2   ?    1920 root     152 20   194M  7180K run      2:33  0.31  0.31 nbrmms
 2   ?    1585 root     152 20   173M  5024K run      0:49  0.23  0.23 cimprovagt
 2   ?      97 root     152 20   648K   576K run      3:05  0.21  0.21 pm_schedcpu
 0   ?       8 root     152 20  1008K   896K run      0:07  0.18  0.18 ksyncer_daemon
 6   ?      86 root     152 20  2304K  2048K run      0:01  0.16  0.16 fb_daemon
 6   ?    1583 cimsrvr  152 20 59172K 12288K run     16:19  0.14  0.14 cimservermain
 5   ?    1587 root     152 20 39012K   544K run      9:09  0.14  0.14 cimprovagt
 5   ?    1577 root     152 20 25872K  1892K run      0:01  0.14  0.14 rpcd
 3   ?    1967 root     152 20 98780K  1436K run      0:11  0.14  0.14 nbsvcmon
 2   ?    2171 root     152 20 85516K  4188K run      0:25  0.14  0.14 vxsvc
 4   ?    8772 oracle   152 20   109M 14648K run     10:22  0.12  0.12 emagent
 2   ?    5730 oracle   154 20  7755M  5572K sleep    0:00  0.12  0.11 ora_j000_crmdb
 6   ?    1942 root     152 20   267M  2528K run      0:05  0.10  0.10 nbsl
 4   ?    1999 root     152 20 22980K  1460K run      0:04  0.08  0.08 swagentd
 3   ?    2296 root     154 20  9896K   496K sleep    0:21  0.08  0.08 kcmond
 2   ?    1167 root     152 20 12156K   632K run      0:36  0.07  0.07 automountd
 0   ?   16359 oracle   154 20  7758M  3784K sleep    0:18  0.07  0.07 oraclecrmdb
 1   ?   20622 oracle   154 20  7755M  2424K sleep    0:07  0.07  0.07 oraclecrmdb
bash-3.2#

bash-3.2# print_manifest |grep -i memory
    Main Memory:        16315 MB
bash-3.2#

bash-3.2# swapinfo -tam
             Mb      Mb      Mb   PCT  START/      Mb
TYPE      AVAIL    USED    FREE  USED   LIMIT RESERVE  PRI  NAME
dev        8192     247    7945    3%       0       -    1  /dev/vg00/lvol2
dev       25600     247   25353    1%       0       -    1  /dev/vg00/lvol10
reserve       -    8146   -8146
memory    15519   10181    5338   66%
total     49311   18821   30490   38%       -       0    -
bash-3.2#

 

 

 

  • Buffer tuning and network throttle are two different things. Network throttle is describes in these Tech notes:

    http://www.symantec.com/docs/HOWTO13915

    http://www.symantec.com/docs/TECH153326

    http://www.symantec.com/docs/TECH30467

    But in general normal backup should not affect system performance - if it does there is something wrong that need to be fixed.

    Buffer tuning is used to improve general peformance - it is not a tool to slow down backups.

    I wrote a small blog about buffer tuning here: http://www.mass.dk/netbackup/guides/49-netbackup-buffer-tuning.html

6 Replies

  • Buffer tuning and network throttle are two different things. Network throttle is describes in these Tech notes:

    http://www.symantec.com/docs/HOWTO13915

    http://www.symantec.com/docs/TECH153326

    http://www.symantec.com/docs/TECH30467

    But in general normal backup should not affect system performance - if it does there is something wrong that need to be fixed.

    Buffer tuning is used to improve general peformance - it is not a tool to slow down backups.

    I wrote a small blog about buffer tuning here: http://www.mass.dk/netbackup/guides/49-netbackup-buffer-tuning.html

  • Hi Nicolai,

    So changes to buffer size and network speed will not give result?

    What can cause ?

    P.S.. the policy type is standart..  only file system..only one stream.

     

  • Anyway, we changed the network speed.. for troubleshoot. I will inform you the result...thank you

  • Problem was solved by changing the network speed...thank you  Nicolai..

    We added LIMIT_BANDWIDTH = 10.10.25.10 10.10.25.10 60000  to bp.conf  .. 13-14MB/S

    60000:8=75000( kbit to KB)    75000x2=15000( full duplex (2way))

     

  • Glad to hear - and thank you for showing us the math behind the LIMIT_BANDIWTH setting yes

  • Hi guys

    I am sorry.. That calculation was wrong.((((

    I want to correct it..To dont blow another people's mind at future)

    with 60000 at the beginning it was working with  13-14MB/s.. The backup size was 200GB.. after 2 hour it started with speed 23MB/s..

    So  we changed it 60000 to 13547.. And result was 12-13MB/s..

    Now  it is okay...