Comprehensive methods of viewing memory usage on Solaris

Question

On Linux  the  top  command shows a detailed but high level overview of your memory usage  showing   Total Memory  Used Memory  Free Memory  Buffer Usage  Cache Usage  Swap size and Swap Usage   My question is  what commands are available to show these memory usage figures in a clear and simple way  Bonus points if they re present in the  Core  install of Solaris   sar  doesn t count

User · Answer

Here are the basics  I m not sure that any of these count as  clear and simple  though   ps 1   For process-level view     ps -opid vsz rss osz args   PID  VSZ  RSS   SZ COMMAND  1831 1776 1008  222 ps -opid vsz rss osz args  1782 3464 2504  433 -bash     vsz VSZ  total virtual process size  kb   rss RSS  resident set size  kb  may be inaccurate     see man   osz SZ  total size in memory  pages   To compute byte size from pages     sz pages   ps -o osz -p  pid   grep -v SZ     sz bytes      sz pages     pagesize       sz mbytes      sz bytes     1024   1024        echo   pid OSZ  sz mbytes MB    vmstat 1M     vmstat 5 5   kthr      memory            page            disk          faults      cpu  r b w   swap  free  re  mf pi po fr de sr rm s3 -- --   in   sy   cs us sy id  0 0 0 535832 219880  1   2  0  0  0  0  0 -0  0  0  0  402   19   97  0  1 99  0 0 0 514376 203648  1   4  0  0  0  0  0  0  0  0  0  402   19   96  0  1 99  C   prstat 1M      PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS NLWP          1852 martin   4840K 3600K cpu0    59    0   0 00 00 0 3  prstat 1   1780 martin   9384K 2920K sleep   59    0   0 00 00 0 0  sshd 1         swap 1    Long listing  and  summary  modes     swap -l swapfile             dev  swaplo blocks   free  dev zvol dsk rpool swap 256 1      16 1048560 1048560   swap -s  total  42352k bytes allocated   20192k reserved   62544k used  607672k available     top 1   An older version  3 51  is available on the Solaris companion CD from Sun  with the disclaimer that this is  Community  not Sun  supported   More recent binary packages available from sunfreeware com or blastwave org   load averages   0 02   0 00   0 00                       up 2 12 31 38                                                                                            08 53 58 31 processes  30 sleeping  1 on cpu CPU states  98 0  idle   0 0  user   2 0  kernel   0 0  iowait   0 0  swap Memory  1024M phys mem  197M free mem  512M total swap  512M free swap     PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND   1898 martin     1  54    0 3336K 1808K cpu      0 00  0 96  top      7 root      11  59    0   10M 7912K sleep    0 09  0 02  svc startd   sar 1M   And just what s wrong with sar

User · Answer

top  is usually available on Solaris   If not then revert to  vmstat  which is available on most UNIX system   It should look something like this  from an AIX box   vmstat  System configuration  lcpu 4 mem 12288MB ent 2 00  kthr    memory              page              faults              cpu ----- ----------- ------------------------ ------------ -----------------------  r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy  cs us sy id wa    pc    ec  2  1 1614644 585722   0   0   1  22  104   0 808 29047 2767 12  8 77  3  0 45  22 3    the colums  avm  and  fre  tell you the total memory and free memery   a  man vmstat  should get you the gory details

User · Answer

top  is usually available on Solaris   If not then revert to  vmstat  which is available on most UNIX system   It should look something like this  from an AIX box   vmstat  System configuration  lcpu 4 mem 12288MB ent 2 00  kthr    memory              page              faults              cpu ----- ----------- ------------------------ ------------ -----------------------  r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy  cs us sy id wa    pc    ec  2  1 1614644 585722   0   0   1  22  104   0 808 29047 2767 12  8 77  3  0 45  22 3    the colums  avm  and  fre  tell you the total memory and free memery   a  man vmstat  should get you the gory details

User · Answer

Top can be compiled from sources or downloaded from sunfreeware com   As previously posted  vmstat is available  I believe it s in the core install

User · Answer

echo   memstat   mdb -k Page Summary                Pages                MB   Tot ------------     ----------------  ----------------  ---- Kernel                       7308                57   23  Anon                         9055                70   29  Exec and libs                1968                15    6  Page cache                   2224                17    7  Free  cachelist              6470                50   20  Free  freelist               4641                36   15   Total                       31666               247 Physical                    31256               244

User · Answer

Top can be compiled from sources or downloaded from sunfreeware com   As previously posted  vmstat is available  I believe it s in the core install

User · Answer

The command free is nice  Takes a short while to understand the    - buffers cache   but the idea is that cache and buffers doesn t really count when evaluating  free   as it can be dumped right away  Therefore  to see how much free  and used  memory you have  you need to remove the cache buffer usage - which is conveniently done for you

User · Answer

Here are the basics  I m not sure that any of these count as  clear and simple  though   ps 1   For process-level view     ps -opid vsz rss osz args   PID  VSZ  RSS   SZ COMMAND  1831 1776 1008  222 ps -opid vsz rss osz args  1782 3464 2504  433 -bash     vsz VSZ  total virtual process size  kb   rss RSS  resident set size  kb  may be inaccurate     see man   osz SZ  total size in memory  pages   To compute byte size from pages     sz pages   ps -o osz -p  pid   grep -v SZ     sz bytes      sz pages     pagesize       sz mbytes      sz bytes     1024   1024        echo   pid OSZ  sz mbytes MB    vmstat 1M     vmstat 5 5   kthr      memory            page            disk          faults      cpu  r b w   swap  free  re  mf pi po fr de sr rm s3 -- --   in   sy   cs us sy id  0 0 0 535832 219880  1   2  0  0  0  0  0 -0  0  0  0  402   19   97  0  1 99  0 0 0 514376 203648  1   4  0  0  0  0  0  0  0  0  0  402   19   96  0  1 99  C   prstat 1M      PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS NLWP          1852 martin   4840K 3600K cpu0    59    0   0 00 00 0 3  prstat 1   1780 martin   9384K 2920K sleep   59    0   0 00 00 0 0  sshd 1         swap 1    Long listing  and  summary  modes     swap -l swapfile             dev  swaplo blocks   free  dev zvol dsk rpool swap 256 1      16 1048560 1048560   swap -s  total  42352k bytes allocated   20192k reserved   62544k used  607672k available     top 1   An older version  3 51  is available on the Solaris companion CD from Sun  with the disclaimer that this is  Community  not Sun  supported   More recent binary packages available from sunfreeware com or blastwave org   load averages   0 02   0 00   0 00                       up 2 12 31 38                                                                                            08 53 58 31 processes  30 sleeping  1 on cpu CPU states  98 0  idle   0 0  user   2 0  kernel   0 0  iowait   0 0  swap Memory  1024M phys mem  197M free mem  512M total swap  512M free swap     PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND   1898 martin     1  54    0 3336K 1808K cpu      0 00  0 96  top      7 root      11  59    0   10M 7912K sleep    0 09  0 02  svc startd   sar 1M   And just what s wrong with sar

User · Answer

top  is usually available on Solaris   If not then revert to  vmstat  which is available on most UNIX system   It should look something like this  from an AIX box   vmstat  System configuration  lcpu 4 mem 12288MB ent 2 00  kthr    memory              page              faults              cpu ----- ----------- ------------------------ ------------ -----------------------  r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy  cs us sy id wa    pc    ec  2  1 1614644 585722   0   0   1  22  104   0 808 29047 2767 12  8 77  3  0 45  22 3    the colums  avm  and  fre  tell you the total memory and free memery   a  man vmstat  should get you the gory details

User · Answer

echo   memstat   mdb -k Page Summary                Pages                MB   Tot ------------     ----------------  ----------------  ---- Kernel                       7308                57   23  Anon                         9055                70   29  Exec and libs                1968                15    6  Page cache                   2224                17    7  Free  cachelist              6470                50   20  Free  freelist               4641                36   15   Total                       31666               247 Physical                    31256               244

User · Answer

top  is usually available on Solaris   If not then revert to  vmstat  which is available on most UNIX system   It should look something like this  from an AIX box   vmstat  System configuration  lcpu 4 mem 12288MB ent 2 00  kthr    memory              page              faults              cpu ----- ----------- ------------------------ ------------ -----------------------  r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy  cs us sy id wa    pc    ec  2  1 1614644 585722   0   0   1  22  104   0 808 29047 2767 12  8 77  3  0 45  22 3    the colums  avm  and  fre  tell you the total memory and free memery   a  man vmstat  should get you the gory details

User · Answer

Here are the basics  I m not sure that any of these count as  clear and simple  though   ps 1   For process-level view     ps -opid vsz rss osz args   PID  VSZ  RSS   SZ COMMAND  1831 1776 1008  222 ps -opid vsz rss osz args  1782 3464 2504  433 -bash     vsz VSZ  total virtual process size  kb   rss RSS  resident set size  kb  may be inaccurate     see man   osz SZ  total size in memory  pages   To compute byte size from pages     sz pages   ps -o osz -p  pid   grep -v SZ     sz bytes      sz pages     pagesize       sz mbytes      sz bytes     1024   1024        echo   pid OSZ  sz mbytes MB    vmstat 1M     vmstat 5 5   kthr      memory            page            disk          faults      cpu  r b w   swap  free  re  mf pi po fr de sr rm s3 -- --   in   sy   cs us sy id  0 0 0 535832 219880  1   2  0  0  0  0  0 -0  0  0  0  402   19   97  0  1 99  0 0 0 514376 203648  1   4  0  0  0  0  0  0  0  0  0  402   19   96  0  1 99  C   prstat 1M      PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS NLWP          1852 martin   4840K 3600K cpu0    59    0   0 00 00 0 3  prstat 1   1780 martin   9384K 2920K sleep   59    0   0 00 00 0 0  sshd 1         swap 1    Long listing  and  summary  modes     swap -l swapfile             dev  swaplo blocks   free  dev zvol dsk rpool swap 256 1      16 1048560 1048560   swap -s  total  42352k bytes allocated   20192k reserved   62544k used  607672k available     top 1   An older version  3 51  is available on the Solaris companion CD from Sun  with the disclaimer that this is  Community  not Sun  supported   More recent binary packages available from sunfreeware com or blastwave org   load averages   0 02   0 00   0 00                       up 2 12 31 38                                                                                            08 53 58 31 processes  30 sleeping  1 on cpu CPU states  98 0  idle   0 0  user   2 0  kernel   0 0  iowait   0 0  swap Memory  1024M phys mem  197M free mem  512M total swap  512M free swap     PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND   1898 martin     1  54    0 3336K 1808K cpu      0 00  0 96  top      7 root      11  59    0   10M 7912K sleep    0 09  0 02  svc startd   sar 1M   And just what s wrong with sar

User · Answer

The command free is nice  Takes a short while to understand the    - buffers cache   but the idea is that cache and buffers doesn t really count when evaluating  free   as it can be dumped right away  Therefore  to see how much free  and used  memory you have  you need to remove the cache buffer usage - which is conveniently done for you

User · Answer

echo   memstat   mdb -k Page Summary                Pages                MB   Tot ------------     ----------------  ----------------  ---- Kernel                       7308                57   23  Anon                         9055                70   29  Exec and libs                1968                15    6  Page cache                   2224                17    7  Free  cachelist              6470                50   20  Free  freelist               4641                36   15   Total                       31666               247 Physical                    31256               244

User · Answer

Top can be compiled from sources or downloaded from sunfreeware com   As previously posted  vmstat is available  I believe it s in the core install

User · Answer

Top can be compiled from sources or downloaded from sunfreeware com   As previously posted  vmstat is available  I believe it s in the core install

User · Answer

Here are the basics  I m not sure that any of these count as  clear and simple  though   ps 1   For process-level view     ps -opid vsz rss osz args   PID  VSZ  RSS   SZ COMMAND  1831 1776 1008  222 ps -opid vsz rss osz args  1782 3464 2504  433 -bash     vsz VSZ  total virtual process size  kb   rss RSS  resident set size  kb  may be inaccurate     see man   osz SZ  total size in memory  pages   To compute byte size from pages     sz pages   ps -o osz -p  pid   grep -v SZ     sz bytes      sz pages     pagesize       sz mbytes      sz bytes     1024   1024        echo   pid OSZ  sz mbytes MB    vmstat 1M     vmstat 5 5   kthr      memory            page            disk          faults      cpu  r b w   swap  free  re  mf pi po fr de sr rm s3 -- --   in   sy   cs us sy id  0 0 0 535832 219880  1   2  0  0  0  0  0 -0  0  0  0  402   19   97  0  1 99  0 0 0 514376 203648  1   4  0  0  0  0  0  0  0  0  0  402   19   96  0  1 99  C   prstat 1M      PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS NLWP          1852 martin   4840K 3600K cpu0    59    0   0 00 00 0 3  prstat 1   1780 martin   9384K 2920K sleep   59    0   0 00 00 0 0  sshd 1         swap 1    Long listing  and  summary  modes     swap -l swapfile             dev  swaplo blocks   free  dev zvol dsk rpool swap 256 1      16 1048560 1048560   swap -s  total  42352k bytes allocated   20192k reserved   62544k used  607672k available     top 1   An older version  3 51  is available on the Solaris companion CD from Sun  with the disclaimer that this is  Community  not Sun  supported   More recent binary packages available from sunfreeware com or blastwave org   load averages   0 02   0 00   0 00                       up 2 12 31 38                                                                                            08 53 58 31 processes  30 sleeping  1 on cpu CPU states  98 0  idle   0 0  user   2 0  kernel   0 0  iowait   0 0  swap Memory  1024M phys mem  197M free mem  512M total swap  512M free swap     PID USERNAME LWP PRI NICE  SIZE   RES STATE    TIME    CPU COMMAND   1898 martin     1  54    0 3336K 1808K cpu      0 00  0 96  top      7 root      11  59    0   10M 7912K sleep    0 09  0 02  svc startd   sar 1M   And just what s wrong with sar

User · Answer

echo   memstat   mdb -k Page Summary                Pages                MB   Tot ------------     ----------------  ----------------  ---- Kernel                       7308                57   23  Anon                         9055                70   29  Exec and libs                1968                15    6  Page cache                   2224                17    7  Free  cachelist              6470                50   20  Free  freelist               4641                36   15   Total                       31666               247 Physical                    31256               244

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