Skip to Content
0

Memory 100%

Sep 28, 2017 at 01:18 PM

45

avatar image
Former Member

Hi Experts,

We are facing frequent performance issues while connecting to our SAP systems and when checked we are seeing that the physical memory utilization is always between 98% and 100%.

We could not find any major jobs running on the systems and causing the slowness issue and also the issue is sporadic Two days in a week or once in a month.User reports it during the peak hours when 08:00-10:00 AM and 14:00 - 15:00 mostly and it continues.

The issue is reported in one region and slowly we will be able to see the same. The transactions we execute and dead slow and WP response will 2300ms approx and sometimes the commands we run on the server like "ls" will list very slow and is screen by screen.

we could see that the memory utilization is 100% but as there is no additional load we are not able to make out which is causing high memory. Can you please help!

uname -a

HP-UX B.11.31 U ia64 0009854279 unlimited-user license

EHP6 FOR SAP ERP 6.0 11.2.0.3.0 oracle Client - 11.2.0.4

Below in the glance command output:

Current Avg High

------------------------------------------------------------------------------------------------------------------------------------------------------

CPU Util S SU U | 20% 14% 51%

Disk Util F F |100% 80% 100%

Mem Util S SU UF F | 99% 99% 100%

Networkil U UR R | 72% 72% 73%

------------------------------------------------------------------------------------------------------------------------------------------------------

MEMORY REPORT Users= 3

Event Current Cumulative Current Rate CumRate High Rate

------------------------------------------------------------------------------------------------------------------------------------------------------

Page Faults 35854 1414864 7470 1669 21209

Page In 10397 143821 2166 169.6 6080

Page Out 53 201423 11.0 237.6 927.1

KB Paged In 13.8mb 562mb 2943 678.7 25504

KB Paged Out 84kb 787mb 17.5 950.5 27326

Reactivations 0 2 0.0 0.0 0.4

Deactivations 0 2 0.0 0.0 0.2

KB Deactivated 0kb 0kb 0.0 0.0 0.0

VM Reads 380 19222 79.1 22.6 204.1

VM Writes 0 19946 0.0 23.5 443.0

Total VM : 31.7gb Sys Mem : 5.3gb User Mem: 9.4gb Phys Mem : 16.0gb

Active VM: 11.0gb Buf Cache: 0mb Free Mem: 114mb FileCache: 1.2gb

MemFS Blk Cnt: 0 MemFS Swp Cnt: 0

Process list from glance:

CPU Util S SU U | 13% 12% 13%

Disk Util F F | 70% 67% 70%

Mem Util S SU UF F | 98% 98% 98%

Networkil U UR R | 72% 72% 72%

------------------------------------------------------------------------------------------------------------------------------------------------------

PROCESS LIST Users= 3

User CPU % Thrd Disk Memory Block

Process Name PID Name ( 800% max) Cnt IOrate RSS/VSS On

------------------------------------------------------------------------------------------------------------------------------------------------------

oracleSID 4141 oraSID 0.0 1 0.0 421mb 439mb SOCKT

oracleSID 4123 oraSID 0.0 1 0.0 340mb 359mb SOCKT

dw.sapSID_DV 4044 SIDadm 0.0 1 0.0 271mb 621mb SEM

oracleSID 5136 oraSID 0.0 1 0.0 199mb 215mb SOCKT

oracleSID 5712 oraSID 0.0 1 0.0 167mb 183mb SOCKT

dw.sapSID_DV 3765 SIDadm 0.0 1 0.0 152mb 477mb SEM

dw.sapSID_DV 3764 SIDadm 0.0 1 0.0 151mb 477mb SEM

dw.sapSID_DV 3766 SIDadm 0.0 1 0.0 151mb 509mb SEM

dw.sapSID_DV 3767 SIDadm 0.0 1 0.0 143mb 477mb SEM

dw.sapSID_DV 3939 SIDadm 0.0 1 0.0 139mb 477mb SEM

dw.sapSID_DV 3762 SIDadm 0.0 1 0.0 138mb 477mb SEM

dw.sapSID_DV 3944 SIDadm 0.0 1 0.0 136mb 477mb SEM

dw.sapSID_DV 3763 SIDadm 0.0 1 0.0 136mb 493mb SEM

dw.sapSID_DV 3757 SIDadm 0.0 1 0.0 134mb 478mb SEM

dw.sapSID_DV 3759 SIDadm 0.0 1 0.0 132mb 493mb SEM

dw.sapSID_DV 3756 SIDadm 0.0 1 0.0 130mb 477mb SEM

dw.sapSID_DV 8631 SIDadm 0.0 1 0.0 130mb 477mb SOCKT

dw.sapSID_DV 4043 SIDadm 0.0 1 0.0 128mb 493mb SEM

dw.sapSID_DV 3768 SIDadm 0.0 1 0.0 127mb 509mb SEM

dw.sapSID_DV 3945 SIDadm 0.0 1 0.0 127mb 477mb SEM

dw.sapSID_DV 3760 SIDadm 0.0 1 0.0 125mb 477mb SEM

dw.sapSID_DV 3752 SIDadm 0.0 1 0.0 124mb 493mb SEM

10 |10000 characters needed characters left characters exceeded
* Please Login or Register to Answer, Follow or Comment.

1 Answer

Bartosz Jarkowski Sep 28, 2017 at 04:28 PM
0

Can you please share:

a) How much RAM do you have in total on this server?

b) What is the value of profile parameter PHYS_MEMSIZE?

c) How much memory is assigned to Oracle ?

d) What is the size of your swap?

Share
10 |10000 characters needed characters left characters exceeded