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Low memory in SCE 8000

We are constantly getting alarms regarding low memory

We are monitring the following OID

memAvailReal 1.3.6.1.4.1.2021.4.6.0 memTotalReal 1.3.6.1.4.1.2021.4.5.0

We have the total (memTotalReal) from which we substract the available free memory (memAvailReal) and that gives us the total free available memory.

[root@SCE8000_01 ~]#>free -t

             total       used       free     shared    buffers     cached

Mem:       2028668    1682708     345960          0      43016     253000

-/+ buffers/cache:    1386692     641976

Swap:            0          0          0

Total:     2028668    1682708     345960

[root@SCE8000_01 ~]#>top

top - 15:34:44 up 4 days,  8:08,  2 users,  load average: 0.63, 0.64, 0.63

Tasks:  67 total,   1 running,  66 sleeping,   0 stopped,   0 zombie

Cpu(s): 18.5%us,  1.5%sy,  0.0%ni, 78.5%id,  1.3%wa,  0.2%hi,  0.0%si,  0.0%st

Mem:   2028668k total,  1683048k used,   345620k free,    43020k buffers

Swap:        0k total,        0k used,        0k free,   253188k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                   

3373 root      20   0 1382m 1.3g  43m S   58 67.4   3628:53 scos-main                 

16394 root      20   0  2476 1108  892 R    0  0.1   0:00.15 top                       

    1 root      20   0  1776  628  552 S    0  0.0   0:13.06 init                      

    2 root      15  -5     0    0    0 S    0  0.0   0:00.00 kthreadd                  

    3 root      RT  -5     0    0    0 S    0  0.0   0:01.50 migration/0               

    4 root      15  -5     0    0    0 S    0  0.0   0:00.13 ksoftirqd/0               

    5 root      RT  -5     0    0    0 S    0  0.0   0:03.94 watchdog/0                

    6 root      RT  -5     0    0    0 S    0  0.0   0:01.48 migration/1               

    7 root      15  -5     0    0    0 S    0  0.0   0:00.07 ksoftirqd/1               

    8 root      RT  -5     0    0    0 S    0  0.0   0:00.56 watchdog/1                

    9 root      15  -5     0    0    0 S    0  0.0   6:21.09 events/0                  

   10 root      15  -5     0    0    0 S    0  0.0   0:17.34 events/1                  

   11 root      15  -5     0    0    0 S    0  0.0   0:00.00 khelper                   

   12 root      15  -5     0    0    0 S    0  0.0   0:18.96 kblockd/0                 

   13 root      15  -5     0    0    0 S    0  0.0   0:03.69 kblockd/1                 

   14 root      20   0     0    0    0 S    0  0.0   0:00.00 pdflush                   

   15 root      20   0     0    0    0 S    0  0.0   0:44.23 pdflush                   

   16 root      15  -5     0    0    0 S    0  0.0   0:00.00 kswapd0 

any ideas why the memory goes low?

2 REPLIES
New Member

Low memory in SCE 8000

I got this command however i do not know how to read it. Hope somebody can help me

[root@SCE8000_01 /proc]#>more meminfo

MemTotal:      2028668 kB

MemFree:        348060 kB

Buffers:         43032 kB

Cached:         250496 kB

SwapCached:          0 kB

Active:        1457744 kB

Inactive:       171376 kB

HighTotal:     1310720 kB

HighFree:         1860 kB

LowTotal:       717948 kB

LowFree:        346200 kB

SwapTotal:           0 kB

SwapFree:            0 kB

Dirty:               0 kB

Writeback:           0 kB

AnonPages:     1335624 kB

Mapped:          52052 kB

Slab:            39520 kB

SReclaimable:    32960 kB

SUnreclaim:       6560 kB

PageTables:       2048 kB

NFS_Unstable:        0 kB

Bounce:              0 kB

WritebackTmp:        0 kB

CommitLimit:   2028668 kB

Committed_AS:  1374756 kB

VmallocTotal:   170948 kB

VmallocUsed:     87368 kB

VmallocChunk:    74176 kB

[root@SCE8000_01 /proc]#>

New Member

Low memory in SCE 8000

memory utilization is always ~70-85% generally on our field deployed SCE8Ks (100+)

so i think this is the normal behaviour.

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