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Linux Version & Recent Enhancement Information

The current version of SarCheck for Linux is: 7.01.01

Enhancements to version 7.01.01 (January 3, 2012):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Fix a bug in the reporting of ps -elf data with multiday compressed files
  • Report date for peak number of processes seen
  • Tweak vfs_cache_pressure algorithms
  • Remove a random empty paragraph in text output
  • Remove the line in the gnuplot graph that connects the process count across reboots

Enhancements to version 7.01.00 (December 15, 2011):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Add a -cid switch to put "cid:" at the beginning of the name in an HTML IMG tag
  • Collect data and report on tcp moderate, tcp_rmem/tcp_wmem,tcpsyncookies, windowscaling, keepalive parameters.
  • Add system architecture type to the introduction of the report
  • Collect data and report on minfree kbytes, dirty ratio, dirty background ratio, vfscachepressure
  • Add ignore parameter flags for bdflush, kswapd, swappiness, timeslice, fs, vfscachepressure, freepages
  • Add nestat -i stats
  • Add table of netstat data
  • Add the PSCOMPRESS keyword to sarcheck_parms for the ps2 script
  • Add the PRSTCOMPRESS keyword to sarcheck_parms for the prst2 script
  • Add netstat -s --tcp
  • Don't report on per-processor details if greater than 32 CPUs unless the user requests it
  • Add check for low memory value from meminfo

Enhancements to version 6.02.17 (July 21, 2011):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Add a -gname switch to specify the character string used to make graph names unique
  • Add table entries for free memory including cached & buffers. The text reports free memory stats with or without cached & buffers, now the table does too.

Enhancements to version 6.02.16 (June 22, 2011):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Support up to 150 CPUs

Enhancements to version 6.02.15 (October 28, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Recommend a low value for swappiness if VMware is seen
  • Support up to 99 CPUs instead of 32 (QA for a 3 or 4 digit number of CPUs is underway)

Enhancements to version 6.02.14 (September 3, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Do not report on irrelevant statistics (for example, swap space used) if the system has no swap space

Enhancements to version 6.02.13 (July 8, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Add support for gnuplot 4.4
  • Add a comment to each gnuplot script with the gnuplot version it was built for

Enhancements to version 6.02.12 (May 28, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Fix a bug which sometimes caused incorrect max-timeslice recommendations on systems which appeared to be used as servers.

Enhancements to version 6.02.11 (May 7, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Make the memory recommendation work correctly on a system with lots of memory (>128 gb).
  • Fix the Processor Table to report on processors if no socket# or core#, but multiple CPUs

Enhancements to version 6.02.10 (April 5, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Don't report on the I/O scheduler for device mapper (dm-) devices as if they were physical disks
  • Correct a misspelled word

Enhancements to version 6.02.09 (March 1, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Change the maximum word length supported for ps -elf CMD names to better identify troublesome processes
  • Fix confusion occasionally caused by missing /proc/partitions data
  • Change the agent so it no longer looks for /proc/partitions data on very old kernels (2.2 & 2.4)

Enhancements to version 6.02.08 (February 22, 2010):
(Subscription holders: If you'd like this version, ask your sales rep)

  • SarCheck for Linux will now look for a sarcheck_parms file in a different way. First it will look for a file named .sarcheck_parms in the user's home directory. If none is found, it will then look for /opt/sarcheck/etc/sarcheck_parms . If 6.02.08 this only applies to the analyze program and the sarcheck script.

Enhancements to version 6.02.07 (August 3, 2009):
(Subscription holders: If you'd like this version, ask your sales rep)

  • The agent now supports up to 32 processors in the /proc/interrupts statistics

Enhancements to version 6.02.06 (April 30, 2009):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Update analysis program and agent to support any MAC address seen regardless of interface name

Enhancements to version 6.02.05 (April 14, 2009):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Update agent to check for eth1 and nic0 if no eth0 MAC address seen

Enhancements to version 6.02.04 (April 8, 2009):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Change Aptitune contact info because of the new address
  • Update analysis program to check for eth1 and nic0 if no eth0 MAC address seen

Enhancements to version 6.02.03 (March 5, 2009):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Create vmware flag for future vmware support
  • Allow for lowercase letters in the eth0 hw address
  • Add the PML, PRP, PLP, DBML, DBRP, DBLP, WIDE, AVGDSK and CAPDSK parms keywords
  • Fix segmentation error when using AVGCPU, MAXCPU, CAPCPU keywords
  • Add mb/sec and kb/io stats to disk table & text

Enhancements to version 6.02.00 (July 25, 2008):
(Subscription holders: If you'd like this version, ask your sales rep)

  • Reorganize the internal ps tables when they become full
  • Fix the -server switch duplicate printing

We have made a conscious decision to avoid using one source tree for different operating systems. This way, SarCheck can evolve on each platform according to the needs of the users, and we "cross pollinate" features from one version to another whenever it makes sense.

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