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  1. 02 Aug, 2011 1 commit
    • Evan Prodromou's avatar
      New method Memcached_DataObject::pivotGet() · 72ed2972
      Evan Prodromou authored
      This method lets you get all the objects with a given variable key and
      another set of "fixed" keys. A good example is getting all the avatars
      for a notice list; the avatar size stays the same, but the IDs change.
      
      Since it's very similar to multiGet(), I refactored that function to
      use pivotGet().
      
      And, yes, I realize these are kind of hard to follow.
      72ed2972
  2. 14 Jul, 2011 2 commits
  3. 11 Jul, 2011 1 commit
  4. 11 Apr, 2011 1 commit
  5. 22 Mar, 2011 1 commit
    • Evan Prodromou's avatar
      Mass replacement of #-comments with //-comments · 83fb5e60
      Evan Prodromou authored
      like leprous boils in our code. So, I've replaced all of them with //
      comments instead. It's a massive, meaningless, and potentially buggy
      change -- great one for the middle of a release cycle, eh?
      83fb5e60
  6. 31 Jan, 2011 2 commits
    • Brion Vibber's avatar
      Performance counters: records number of total and unique cache... · de7726dd
      Brion Vibber authored
      Performance counters: records number of total and unique cache get/set/incr/deletes and queries, and logs to syslog.
      
      $config['site']['logperf'] = true; // to record & dump total hits of each type and the runtime to syslog
      $config['site']['logperf_detail'] = true; // very verbose -- dump the individual cache keys and queries as they get used (may contain private info in some queries)
      
      Seeing 180 cache gets on a timeline page seems not unusual currently; since these run in serial, even relatively small roundtrip times can add up heavily.
      We should consider ways to reduce the number of round trips, such as more frequently storing compound objects or the output of processing in memcached.
      Doing parallel multi-key lookups could also help by collapsing round-trip times, but might not be easy to fit into SN's object model. (For things like streams this should actually work pretty well -- grab the list, then when it's returned go grab all the individual items in parallel and return the list)
      de7726dd
    • Brion Vibber's avatar
      Fix for ticket #3020: set MySQL session time_zone variable to UTC ('+0:00') so... · 54f7154d
      Brion Vibber authored
      Fix for ticket #3020: set MySQL session time_zone variable to UTC ('+0:00') so TIMESTAMP column values are comparable against our other UTC timestamp values.
      
      MySQL stores TIMESTAMP columns as UTC, but with a local time interface. (SRSLY?!) DATETIME columns are always bare and assumed to be local time, but we keep only UTC in them.
      Forcing the session time_zone to UTC means we won't have to worry as much about what we're sending/receiving in there.
      
      Also will let us remove the hack in master commit a7abb232 for session tweaks
      54f7154d
  7. 27 Dec, 2010 1 commit
  8. 17 Dec, 2010 1 commit
  9. 15 Oct, 2010 1 commit
  10. 28 Sep, 2010 1 commit
  11. 06 Sep, 2010 3 commits
  12. 06 Aug, 2010 1 commit
    • Brion Vibber's avatar
      OStatus/FeedSub: tweaked PuSH feed garbage collection so other plugins can... · 7e55fc00
      Brion Vibber authored
      OStatus/FeedSub: tweaked PuSH feed garbage collection so other plugins can declare usage of a low-level feed or an OStatus profile besides profile subscriptions & group memberships.
      SubMirror: redid add-mirror frontend to accept a feed URL, then pass that on to OStatus, instead of pulling from your subscriptions.
      Profile: tweaked subscriberCount() so it doesn't subtract 1 for foreign profiles who aren't subscribed to themselves; instead excludes the self-subscription in the count query.
      Memcached_DataObject: tweak to avoid extra error spew in the DB error raising
      
      Work in progress: tweaking feedsub garbage collection so we can count other uses
      7e55fc00
  13. 30 Jul, 2010 1 commit
  14. 29 Jul, 2010 1 commit
  15. 14 Jul, 2010 1 commit
  16. 04 Jun, 2010 2 commits
  17. 07 Apr, 2010 1 commit
  18. 29 Mar, 2010 1 commit
  19. 24 Mar, 2010 1 commit
  20. 24 Feb, 2010 1 commit
  21. 16 Feb, 2010 1 commit
    • Brion Vibber's avatar
      Stomp queue restructuring for mass scalability: · c74aea58
      Brion Vibber authored
      - Multiplexing queues into groups and for multiple sites.
      - Sharing vs breakout configurable per site and per queue via $config['queue']['breakout']
      - Detect how many times a message is redelivered, discard if it's killed too many daemons
       - count configurable with $config['queue']['max_retries']
       - can dump the items to files in $config['queue']['dead_letter_dir']
      
      Queue daemon memory & resource leak fixes:
      - avoid unnecessary reconnections to memcached server (switch persistent connections back in on second initialization, assuming it's child process)
      - monkey-patch for leaky .ini loads in DB_DataObject::databaseStructure() - was leaking 200k per active switch
      - applied leak fixes to Status_network as well, using intermediate base Safe_DataObject for both it and Memcache_DataObject
      
      Misc queue fixes:
      - correct handling of child processes exiting due to signal termination instead of regular exit
      - shutdown instead of infinite respawn loop if we're already past the soft memory limit at startup
      - Added --all option for xmppdaemon... still opens one xmpp connection per site that has xmpp active
      
      Cache updates:
      - add Cache::increment() method with native support for memcached atomic increment
      c74aea58
  22. 05 Feb, 2010 1 commit
  23. 29 Jan, 2010 1 commit
  24. 28 Jan, 2010 3 commits
  25. 25 Jan, 2010 2 commits
    • Evan Prodromou's avatar
      Offload inbox updates to a queue handler to speed up posting online · e26a843c
      Evan Prodromou authored
      Moved much of the writing that happens when posting a notice to a new
      queuehandler, distribqueuehandler. This updates tags, groups, replies
      and inboxes at queue time (or at Web time, if queues are disabled).
      
      To make this work well, I had to break up the monolithic
      Notice::blowCaches() and make cache blowing happen closer to where
      data is updated.
      
      Squashed commit of the following:
      
      commit 5257626c62750ac4ac1db0ce2b71410c5711cfa3
      Author: Evan Prodromou <evan@status.net>
      Date:   Mon Jan 25 14:56:41 2010 -0500
      
          slightly better handling of blowing tag memory cache
      
      commit 8a22a3cdf6ec28685da129a0313e7b2a0837c9ef
      Author: Evan Prodromou <evan@status.net>
      Date:   Mon Jan 25 01:42:56 2010 -0500
      
          change 'distribute' to 'distrib' so not too long for dbqueue
      
      commit 7a063315b0f7fad27cb6fbd2bdd74e253af83e4f
      Author: Evan Prodromou <evan@status.net>
      Date:   Mon Jan 25 01:39:15 2010 -0500
      
          change handle_notice() to handle() in distributqueuehandler
      
      commit 1a39ccd28b9994137d7bfd21bb4f230546938e77
      Author: Evan Prodromou <evan@status.net>
      Date:   Mon Jan 25 16:05:25 2010 -0500
      
          error with queuemanager
      
      commit e6b3bb93f305cfd2de71a6340b8aa6fb890049b7
      Author: Evan Prodromou <evan@status.net>
      Date:   Mon Jan 25 01:11:34 2010 -0500
      
          Blow memcache at different point rather than one big function for Notice class
      
      commit 94d557cdc016187d1d0647ae1794cd94d6fb8ac8
      Author: Evan Prodromou <evan@status.net>
      Date:   Mon Jan 25 00:48:44 2010 -0500
      
          Blow memcache at different point rather than one big function for Notice class
      
      commit 1c781dd08c88a35dafc5c01230b4872fd6b95182
      Author: Evan Prodromou <evan@status.net>
      Date:   Wed Jan 20 08:54:18 2010 -0500
      
          move broadcasting and distributing to new queuehandler
      
      commit da3e46d26b84e4f028f34a13fd2ee373e4c1b954
      Author: Evan Prodromou <evan@status.net>
      Date:   Wed Jan 20 08:53:12 2010 -0500
      
          Move distribution of notices to new distribute queue handler
      e26a843c
    • Evan Prodromou's avatar
      Recover caching logic lost in bad merge · e6cf293d
      Evan Prodromou authored
      I made a bad merge on Jan 10th from master to 0.9.x. This lost a number
      of memcache enhancements made on the 0.9.x branch. I've been able to
      re-do the manual merge, and this represents the changes. Most of them
      are related to caching on insert.
      e6cf293d
  26. 22 Jan, 2010 1 commit
  27. 21 Jan, 2010 1 commit
  28. 13 Jan, 2010 1 commit
    • Brion Vibber's avatar
      Major refactoring of queue handlers to support running multiple sites in one daemon. · ec145b73
      Brion Vibber authored
      Key changes:
      * Initialization code moved from common.php to StatusNet class;
        can now switch configurations during runtime.
      * As a consequence, configuration files must now be idempotent...
        Be careful with constant, function or class definitions.
      * Control structure for daemons/QueueManager/QueueHandler has been refactored;
        the run loop is now managed by IoMaster run via scripts/queuedaemon.php
        IoManager subclasses are woken to handle socket input or polling, and may
        cover multiple sites.
      * Plugins can implement notice queue handlers more easily by registering a
        QueueHandler class; no more need to add a daemon.
      
      The new QueueDaemon runs from scripts/queuedaemon.php:
      
      * This replaces most of the old *handler.php scripts; they've been refactored
        to the bare handler classes.
      * Spawns multiple child processes to spread load; defaults to CPU count on
        Linux and Mac OS X systems, or override with --threads=N
      * When multithreaded, child processes are automatically respawned on failure.
      * Threads gracefully shut down and restart when passing a soft memory limit
        (defaults to 90% of memory_limit), limiting damage from memory leaks.
      * Support for UDP-based monitoring: http://www.gitorious.org/snqmon
      
      Rough control flow diagram:
      QueueDaemon -> IoMaster -> IoManager
                                 QueueManager [listen or poll] -> QueueHandler
                                 XmppManager [ping & keepalive]
                                 XmppConfirmManager [poll updates]
      
      Todo:
      
      * Respawning features not currently available running single-threaded.
      * When running single-site, configuration changes aren't picked up.
      * New sites or config changes affecting queue subscriptions are not yet
        handled without a daemon restart.
      * SNMP monitoring output to integrate with general tools (nagios, ganglia)
      * Convert XMPP confirmation message sends to use stomp queue instead of polling
      * Convert xmppdaemon.php to IoManager?
      * Convert Twitter status, friends import polling daemons to IoManager
      * Clean up some error reporting and failure modes
      * May need to adjust queue priorities for best perf in backlog/flood cases
      
      Detailed code history available in my daemon-work branch:
      http://www.gitorious.org/~brion/statusnet/brion-fixes/commits/daemon-work
      ec145b73
  29. 12 Jan, 2010 1 commit
  30. 11 Jan, 2010 1 commit
  31. 10 Jan, 2010 1 commit
  32. 07 Jan, 2010 1 commit