rsyslog

The rocket-fast system for log processing

Tag Archives: 8.1.3

rsyslog 8.1.3 (v8-devel) released

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We have just released 8.1.3 of the v8-devel branch.

This release contains further performance improvements. Note that both the output module interface and strgen interface have been changed and (some) modules may need to be modified. For the v8 supported rsyslog provided modules this has already be done (see v8 compatibility document for a list of supported modules). This release also detects failed actions more precisely. Finally, there are a couple of bug fixes in this release.

Note that this release can be considered a "normal" devel version, with moderate risk associated to it. Experience in the past weeks suggest so. Special thanks to Pavel Levshin for all his work and tests. Still note that there is a considerably higher risk running the devel version than the stable one.

ChangeLog:

http://www.rsyslog.com/changelog-for-8-1-3-v8-devel/

Download:

http://www.rsyslog.com/rsyslog-8-1-3-v8-devel/

Feedback is *very much* appreciated.

Best regards,
Florian Riedl

Changelog for 8.1.3 (v8-devel)

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Version 8.1.3 [devel] 2013-12-06

THIS VERSION CAN BE CONSIDERED A "NORMAL" DEVEL RELEASE. It’s no longer
highly experimental. This assertion is based on real-world feedback.

  • changes to the strgen module interface
  • new output module interface for transactional modules
  • performance improvements
    • reduced number of malloc/frees due to further changes to the output module interface
    • reduced number of malloc/frees during string template processing
      We now re-use once allocated string template memory for as long as the worker thread exists. This saves us from doing new memory allocs (and their free counterpart) when the next message is processed. The drawback is that the cache always is the size of the so-far largest message processed. This is not considered a problem, as in any case a single messages’ memory footprint should be far lower than that of a whole set of messages (especially on busy servers).
    • used variable qualifiers (const, __restrict__) to hopefully help the compiler generate somewhat faster code
  • failed action detection more precisely for a number of actions
    If an action  uses string parameter passing but is non-transactional it can be executed immediately, giving a quicker indicatio of action failure.
  • bugfix: limiting queue disk space did not work properly
    • queue.maxdiskspace actually initializes queue.maxfilesize
    • total size of queue files was not checked against queue.maxdiskspace for disk assisted queues.

    Thanks to Karol Jurak for the patch.