Quick reference guide to managing performance

• To initialize the kernel-recording mechanism:

     prfld
  

  See profiler(ADM).

• To collect kernel profiling data:

     prfdc
  

  See profiler(ADM).

• To collect kernel profiling data at the time of invocation only:

     prfsnap
  

  See profiler(ADM).

• To collect system activity data automatically:

     sadc
  

  See sadc(ADM).

• To collect system activity data on demand:

     sar
  

  See sar(ADM). The following options are available with sar:

  
  -a

  check file access operations

  
  -b

  check buffer activity

  
  -c

  check system calls

  
  -d

  check disk activity

  
  -g

  check page-out and memory freeing activity

  
  -k

  check kernel memory allocation

  
  -m

  check interprocess communication

  
  -p

  check page-in and fault rates

  
  -q

  check queue activity

  
  -r

  check unused memory

  
  -t

  check inode activity by filesystem type

  
  -u

  check CPU utilization to determine if large I/O transfers are slowing the system

  
  -v

  check system table status

  
  -w

  check swapping and switching volume

  
  -y

  check terminal activity

  
  -A

  report overall system performance

  
  -P

  reports system activity for specified processors only

  
  -R

  reports raw data values

• To compress an entire filesystem:
  
  /usr/sbin/dcopy fs1 fs2

  See dcopy(ADM).

• To compress a single directory:
  
  mv /home/bob /home/obob
  mkdir /home/bob
  cd /home/obob
  find . -print | cpio -plm ../bob
  cd ..
  rm -rf obob

  See find(C) and cpio(C).

• To determine the elapsed time, user time, and system time spent in execution of a command:
  
  timex

  See timex(C).

• To enable, disable, or check the status of the sampling mechanism:
  
  prfstat

  See profiler(ADM).

• To find large, inefficient directories:
  
  find / -type d -size +20 -print

  See find(C).

  ---

  NOTE: The size argument to the find command is in 512-byte blocks.

  ---

• To find inactive files:
  
  find / -mtime +90 -atime +90 -print > file

  See find(C).

• To move user directories:
  
  cd /fs1
  find userx usery -print | cpio -pdm /fs2
  rm -rf /fs1/userx /fs1/usery

  See find(C) and cpio(C).

• To print out the number of free file blocks and inodes:
  
  df

  See df(ADM).

• To print the data collected by prfdc or prfsnap:
  
  prfpr

  See profiler(ADM).

• To summarize filesystem usage:
  
  du

  See du(ADM).

• To terminate a runaway process:
  
  kill -9 pid

  See kill(C).

• To use a shell script to collect and store data in the binary file /var/adm/sa/sadd:
  
  sa1

  See sadc(ADM).

• To use a shell script to collect and store data in the ASCII file /var/adm/sa/sardd:
  
  sa2

  See sadc(ADM).