Changelog

0.6 [2010.03.22]

• Added: Various improvements contributed by memCron’s user, Ben and Bret: (thanks guys!)
  • Replaced most external calls with built-ins
  • Removed dependency on Mail::SendMail
  • Replaced LWP (slow and bloated) with system call to curl
  • Get memory sizes from /proc/meminfo
  • Simplified memory collecting
  • Get current size from API rather than OS
  • New options to disable updates, alerts
  • Include target memory and cached memory in csv
  • Better error handling on memory resize
• Added: New chart formatting options: target memory and cached memory
• Added: Version info to the graph page footer
• Changed: Now display http server name instead of actual PS name for extra security
• Changed: Z-score function is now internal

0.4.1 [2009.08.10]

• Added: favicon for easier recognition of memCron tab in browser
• Fixed: Memory calculation due to the 2x increase of swap memory by DreamHost
• Fixed: Proper max axis value for “Used + Total Memory”

0.4 [2009.06.28]

• Added: New parameter $max_memory and $min_memory to limit the memory range that memCron should operate within
• Added: New parameter $mem_threshold to set a memory threshold, which when exceeded, will send out notification to $email
• Added: 4 new subroutines – round(), get_mem_size(), get_mem_total(), get_mem_target() to simplify the code structure
• Added: memCron now outputs base and swap memory size, resize details, downsize count to command line
• Changed: $debug parameter moved from config.cfg to memcron.pl
• Changed: Tooltip for the resources usage graph is now cuter i.e. in yellow!
• Removed: $username parameter from config.cfg, now DreamHost API only needs API key for authentication
• Fixed: Memory target is now computed more correctly during downsize
• Fixed: Total memory is now displayed correctly on the resources graph by accounting for max swap memory, which is capped at 450MB

0.3 [2009.05.27]

• Added: New parameter $downsize_resistance to prevent rapid fluctuations from causing multiple resizes within short period of time
• Added: Customizable chart formatting (y-axis) for resources usage chart
• Added: New css folder to hold css stylesheets (no more css snippet in html head)
• Added: Charset information to http header in PHP
• Added: Generator meta information to XHTML head section
• Changed: 0.3 to 0.7 ratio between $mem_mean and $mem_used instead of 0.5 to 0.5 when calculating $mem_free_tolerance
• Changed: More descriptive error message when log file cannot be opened
• Changed: Chart title from “Memory Usage” to “Resources Usage”
• Changed: #memchart width increased from 80% to 93%
• Fixed: $unix_time and $cpu_load will now be reevaluated until it is defined to ensure data point is always logged
• Fixed: Memory target calculations now correctly accounts max and swap memory, which is capped at 4000 MB and 450MB respectively
• Fixed: Tooltip fade in now works better in IE (remove filter to restore ClearType)

0.2 [2009.05.03]

• Changed: $use_api is changed to $debug, which if set disables all log outputs and API calls
• Fixed: Account for $num_data in z-score calculation to ensure number of memory changes is minimized to within daily limits

0.1 [2009.04.30]

• Initial release