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Homework and Emergencies Emergency UNIX and Linux Support High CPU+Memory comsumption
# 1  
Old 09-22-2011
High CPU+Memory comsumption
Hi All,

I have Solaris-9, Sun Fire V1280 with uptime of 501 Days. My Big brother monitoring showing me 90% + memory utilization on this box. Since this is production box, I can not reboot it. Is there way to know, what is consuming so much ? It is affecting my other environment on the box. Below are stats, which can help to understand my problem.
Code:
From prstat -a
 NPROC USERNAME  SIZE   RSS MEMORY      TIME  CPU
    34 autopp1  8577M 7133M    45% 175:31:28  19%
    54 root      647M  317M   1.9%   8:00:28 3.2%
     6 bb       6336K 5304K   0.0%   0:13:48 0.0%
     1 smmsp    4520K 1304K   0.0%   0:00:03 0.0%
:/var/tmp# /usr/local/bin/top
last pid: 24465;  load averages:  2.34,  2.55,  2.60                                                                 05:45:34
95 processes:  91 sleeping, 4 on cpu
CPU states: 43.7% idle, 40.8% user, 11.3% kernel,  4.2% iowait,  0.0% swap
Memory: 16G real, 1912M free, 6058M swap in use, 26G swap free
   PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND
 17546 autopp1   15   0    0 1103M 1015M cpu/2   11:49  7.71% content.exe
 13595 autopp1   15   0    0 1965M 1794M cpu/0   44.6H  7.24% content.exe
 16162 autopp1   15  43    0 1309M 1194M cpu/8   15:21  6.46% content.exe
 26233 root       3  60    0   53M   28M sleep   26:59  4.22% clBackup
 13624 autopp1   15  59    0 1712M 1540M sleep   44.4H  4.16% content.exe
 26239 root       1  58    0   45M 6536K sleep    4:00  1.05% nwp
 
:/var/tmp/prustat -t5 5 (Dtrace thing)
  PID   %CPU   %Mem  %Disk   %Net  COMM
13595   8.77  11.43   0.00   0.00  content.exe
16162  10.11   7.69   0.00   0.00  content.exe
17546  10.63   6.54   0.00   0.00  content.exe
13624   4.87   9.81   0.00   0.00  content.exe
26233   3.60   0.18   0.00   0.00  clBackup
  PID   %CPU   %Mem  %Disk   %Net  COMM
13595   8.76  11.43   0.00   0.00  content.exe
16162  10.05   7.69   0.00   0.00  content.exe
17546  10.61   6.54   0.00   0.00  content.exe
13624   4.84   9.81   0.00   0.00  content.exe
26233   3.61   0.18   0.00   0.00  clBackup
:/var/tmp# ps -ef | cut -c42-100 | sort -nr | head
24290:33 fsflush
4996:25 ./dih-t3ext.exe
2682:48 /t3/data/autonomy/IDOLServer/IDOL-t3ext3/content/co
2669:46 /t3/data/autonomy/IDOLServer/IDOL-t3ext4/content/co
283:57 /etc/init -
57:15 /t3/data/autonomy/IDOLServer/IDOL-t3ext5/content/cont
55:32 /opt/galaxy/Base/cvd
49:42 ./AutonomyIDOLServer-t3ext5.exe
29:31 /opt/galaxy/iDataAgent/clBackup -child 23666 -j 20676
24:53 ./AutonomyIDOLServer-t3ext3.exe

Though application team has restarted content.exe, still it showing big. From stats if I calculate, I do not see if it is consuming 90%
# 2  
Old 09-22-2011
From top output for the Memory you see: Memory: 16G real, 1912M free... would look like almost 90%...
Since we dont know the configuration of your system it will be difficult to say more...
(e.g. is is /tmp swap? ...)
# 3  
Old 09-22-2011
Thanks vbe for replying. Here is the configuration of my system
Code:
:/# prtdiag -v | head -20
System Configuration: Sun Microsystems  sun4u Sun Fire V1280
System clock frequency: 150 MHZ
Memory size: 16384 Megabytes
======================================= CPUs =======================================
                   E$          CPU                  CPU    Temperature
CPU      Freq      Size        Implementation       Mask    Die   Amb.  Status      Location
-------  --------  ----------  -------------------  -----   ----  ----  ------      --------
      0  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     42C   24C  online      SB0/P0
      1  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     43C   24C  online      SB0/P1
      2  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     42C   23C  online      SB0/P2
      3  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     41C   24C  online      SB0/P3
      8  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     41C   24C  online      SB2/P0
      9  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     41C   25C  online      SB2/P1
     10  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     42C   24C  online      SB2/P2
     11  1200 MHz  8MB         SUNW,UltraSPARC-III+  6.0     41C   24C  online      SB2/P3
==================================== IO Devices ====================================
Bus   Freq      Slot +  Name +
Type  MHz       Status  Path                          Model
:/# swap -l
swapfile             dev  swaplo blocks   free
/dev/vx/dsk/bootdg/swapvol 273,96001     16 49160240 49152944
:/# df -h /tmp
Filesystem             size   used  avail capacity  Mounted on
swap                   5.0G     8K   5.0G     1%    /tmp
:/# vmstat 5 5
 kthr      memory            page            disk          faults      cpu
 r b w   swap  free  re  mf pi po fr de sr s0 s1 s3 sd   in   sy   cs us sy id
 0 0 0 30301712 2887176 378 334 2658 1 1 0 0 4 4  0  0  331  392  260 11  2 87
 0 0 0 27608800 1589808 552 47 11535 0 0 0 0 0 0  0  0 1128 5540 1643 66  4 30
 0 0 0 27608784 1589616 1162 80 14855 0 0 0 0 0 0 0  0 1097 4885 1332 57  5 38
 0 0 0 27608816 1589440 718 45 16133 0 0 0 0 9 9  0  0 1183 3962 1330 63  5 32
 0 0 0 27608768 1589704 221 66 5230 2 2 0 0 0  0  0  0  641 5210 1028 41  2 57
:/# mpstat 5 5
CPU minf mjf xcal  intr ithr  csw icsw migr smtx  srw syscl  usr sys  wt idl
  0   74   6   37    82   77   87    7   14   18    0    63   20   3   4  74
  1   41   3   41    30   23    5    5   15   17    0    75    8   2   2  88
  2   26   2   79     7    1   42    4   14   15    0    77    7   1   1  90
  3   24   1   21    77   65    3    2   20   18    0    15    7   2   1  90
  8   82   3   88    68   59   41    7   20   22    0    31   14   5   2  79
  9   39   3   92    54   47   14    5   12   20    0    19   12   2   2  84
 10   23   2   10     7    1   60    3   10   18    0    22   10   1   1  88
 11   24   1   34     6    1    8    2   16   15    0    90    8   1   1  90

# 4  
Old 09-22-2011
I don't know if it will show anything on Solaris 9, but check this:
Code:
echo "::memstat" | mdb -k

# 5  
Old 09-22-2011
Bartus11, here is the output
Code:
:/# echo "::memstat" | mdb -k
Page Summary                Pages                MB  %Tot
------------     ----------------  ----------------  ----
Kernel                     573081              4477   29%
Anon                       709639              5544   35%
Exec and libs               17818               139    1%
Page cache                 536933              4194   27%
Free (cachelist)           170492              1331    8%
Free (freelist)               329                 2    0%
Total                     2008292             15689

# 6  
Old 09-22-2011
As you can see in the output 4GB of physical memory are allocated to page cache. You don't have to worry about your applications running out of memory. If available RAM runs short, Solaris will give back some of that page cache for use for applications.
This User Gave Thanks to bartus11 For This Post:
solaris_1977
# 7  
Old 09-22-2011
Thanks Bartus.
But can we know, what is consuming so much memory ? Though Solaris will give page cache, but still Big Brother keeps complaining about high physical memory usage and once it crosses threshold value of 90%, it keep generating ticket.
Regards
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