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Memcached Memcached Server 1.4.29 Released

Discussion in 'Other Centmin Mod Installed software' started by eva2000, Jul 15, 2016.

  1. eva2000

    eva2000 Administrator Staff Member

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    Memcached Server 1.4.29 Updated



    Updated both Centmin Mod 123.08stable and 123.09beta01 builds to default to Memcached server 1.4.29 release. Once you update your local server Centmin Mod branch code via centmin.sh menu option 23 outlined below. You will need to exit centmin.sh and re-run centmin.sh again and run centmin.sh menu option 10 to update Memcached server to 1.4.29.

    To update your Centmin Mod builds follow instructions at centminmod.com/upgrade.html and respective version threads below:

    ReleaseNotes1429 · memcached/memcached Wiki · GitHub

    Memcached 1.4.29
    Code (Text):
    echo stats | nc 127.0.0.1 11211
    STAT pid 27623
    STAT uptime 63
    STAT time 1466919513
    STAT version 1.4.29
    STAT libevent 2.0.22-stable
    STAT pointer_size 64
    STAT rusage_user 0.167974
    STAT rusage_system 0.050992
    STAT curr_connections 6
    STAT total_connections 7
    STAT rejected_connections 0
    STAT connection_structures 7
    STAT reserved_fds 20
    STAT cmd_get 4
    STAT cmd_set 3
    STAT cmd_flush 0
    STAT cmd_touch 0
    STAT get_hits 1
    STAT get_misses 3
    STAT get_expired 0
    STAT delete_misses 0
    STAT delete_hits 0
    STAT incr_misses 0
    STAT incr_hits 0
    STAT decr_misses 0
    STAT decr_hits 0
    STAT cas_misses 0
    STAT cas_hits 0
    STAT cas_badval 0
    STAT touch_hits 0
    STAT touch_misses 0
    STAT auth_cmds 0
    STAT auth_errors 0
    STAT bytes_read 50226
    STAT bytes_written 25014
    STAT limit_maxbytes 25165824
    STAT accepting_conns 1
    STAT listen_disabled_num 0
    STAT time_in_listen_disabled_us 0
    STAT threads 4
    STAT conn_yields 0
    STAT hash_power_level 16
    STAT hash_bytes 524288
    STAT hash_is_expanding 0
    STAT slab_reassign_rescues 0
    STAT slab_reassign_evictions_nomem 0
    STAT slab_reassign_inline_reclaim 0
    STAT slab_reassign_busy_items 0
    STAT slab_reassign_running 0
    STAT slabs_moved 0
    STAT lru_crawler_running 0
    STAT lru_crawler_starts 2
    STAT lru_maintainer_juggles 350
    STAT malloc_fails 0
    STAT log_worker_dropped 0
    STAT log_worker_written 0
    STAT log_watcher_skipped 0
    STAT log_watcher_sent 0
    STAT bytes 25034
    STAT curr_items 1
    STAT total_items 3
    STAT slab_global_page_pool 0
    STAT expired_unfetched 0
    STAT evicted_unfetched 0
    STAT evictions 0
    STAT reclaimed 0
    STAT crawler_reclaimed 0
    STAT crawler_items_checked 2
    STAT lrutail_reflocked 0
    STAT moves_to_cold 0
    STAT moves_to_warm 0
    STAT moves_within_lru 0
    STAT direct_reclaims 0
    END
    
     
    • Informative Informative x 2
  2. eva2000

    eva2000 Administrator Staff Member

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    huge change for memcached being able to cache items over 1MB !

    And AFAIK, with Centmin Mod now using the -o modern flag, the new changes should be utilised out of the box ?

    but seems according to Chunked (large) item support by dormando · Pull Request #181 · memcached/memcached · GitHub the default is 1MB item max size unless you pass the -o slab_chunk_max parameter.
    Code (Text):
          settings.item_size_max = 1024 * 1024; /* The famous 1MB upper limit. */
    +    settings.slab_chunk_size_max = settings.item_size_max;
    +    settings.slab_page_size = 1024 * 1024; /* chunks are split from 1MB pages. */

    so for 2MB max size
    Code (Text):
    -o slab_chunk_max=2048
    

    asking on their mailing list for confirmation Google Groups

    edit: okay the unit is kilobytes so 2MB = 2048 KB
     
    Last edited: Jul 15, 2016
  3. eva2000

    eva2000 Administrator Staff Member

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    sample stats with Centmin Mod already installed memcached-tool
    Code (Text):
    memcached-tool 127.0.0.1:11211 stats
    #127.0.0.1:11211   Field       Value
             accepting_conns           1
                   auth_cmds           0
                 auth_errors           0
                       bytes      174368
                  bytes_read      233371
               bytes_written      135920
                  cas_badval           0
                    cas_hits           0
                  cas_misses           0
                   cmd_flush           0
                     cmd_get         132
                     cmd_set         128
                   cmd_touch           0
                 conn_yields           0
       connection_structures          11
       crawler_items_checked          94
           crawler_reclaimed           0
            curr_connections          10
                  curr_items          87
                   decr_hits           0
                 decr_misses           0
                 delete_hits           0
               delete_misses           0
             direct_reclaims           0
           evicted_unfetched           0
                   evictions           0
           expired_unfetched           0
                 get_expired           0
                 get_flushed           0
                    get_hits          55
                  get_misses          77
                  hash_bytes      524288
           hash_is_expanding           0
            hash_power_level          16
                   incr_hits           0
                 incr_misses           0
                    libevent 2.0.22-stable
              limit_maxbytes   268435456
         listen_disabled_num           0
            log_watcher_sent           0
         log_watcher_skipped           0
          log_worker_dropped           0
          log_worker_written           0
         lru_crawler_running           0
          lru_crawler_starts          69
      lru_maintainer_juggles        1032
           lrutail_reflocked           0
                malloc_fails           0
               moves_to_cold         104
               moves_to_warm           9
            moves_within_lru           3
                         pid       21995
                pointer_size          64
                   reclaimed           0
        rejected_connections           0
                reserved_fds          20
               rusage_system    0.076666
                 rusage_user    0.083333
       slab_global_page_pool           0
    slab_reassign_busy_items           0
    slab_reassign_chunk_rescues           0
    slab_reassign_evictions_nomem           0
    slab_reassign_inline_reclaim           0
       slab_reassign_rescues           0
       slab_reassign_running           0
                 slabs_moved           0
                     threads           4
                        time  1468589866
    time_in_listen_disabled_us           0
           total_connections          15
                 total_items         128
                  touch_hits           0
                touch_misses           0
                      uptime          67
                     version      1.4.29
    

    my settings, i have 256MB memory allocated to this instance
    Code (Text):
    memcached-tool 127.0.0.1:11211 settings
    #127.0.0.1:11211   Field       Value
           auth_enabled_sasl          no
            binding_protocol auto-negotiate
                 cas_enabled         yes
                  chunk_size          72
              detail_enabled          no
               domain_socket        NULL
                   evictions          on
    expirezero_does_not_evict          no
               flush_enabled         yes
               growth_factor        1.08
              hash_algorithm     murmur3
              hashpower_init           0
                 hot_lru_pct          32
                idle_timeout           0
                       inter   127.0.0.1
               item_size_max     1048576
                 lru_crawler         yes
           lru_crawler_sleep         100
         lru_crawler_tocrawl           0
       lru_maintainer_thread         yes
                    maxbytes   268435456
                    maxconns        2048
               maxconns_fast         yes
                 num_threads           4
         num_threads_per_udp           4
                      oldest           0
              reqs_per_event         200
               slab_automove           1
               slab_reassign         yes
             stat_key_prefix           :
            tail_repair_time           0
                 tcp_backlog        2048
                     tcpport       11211
                 track_sizes          no
                     udpport       11211
                       umask         700
                   verbosity           0
                warm_lru_pct          32
         watcher_logbuf_size      262144
          worker_logbuf_size       65536
    

    or using netcat to get settings
    Code (Text):
    echo stats settings | nc 127.0.0.1 11211
    STAT maxbytes 268435456
    STAT maxconns 2048
    STAT tcpport 11211
    STAT udpport 11211
    STAT inter 127.0.0.1
    STAT verbosity 0
    STAT oldest 0
    STAT evictions on
    STAT domain_socket NULL
    STAT umask 700
    STAT growth_factor 1.08
    STAT chunk_size 72
    STAT num_threads 4
    STAT num_threads_per_udp 4
    STAT stat_key_prefix :
    STAT detail_enabled no
    STAT reqs_per_event 200
    STAT cas_enabled yes
    STAT tcp_backlog 2048
    STAT binding_protocol auto-negotiate
    STAT auth_enabled_sasl no
    STAT item_size_max 1048576
    STAT maxconns_fast yes
    STAT hashpower_init 0
    STAT slab_reassign yes
    STAT slab_automove 1
    STAT lru_crawler yes
    STAT lru_crawler_sleep 100
    STAT lru_crawler_tocrawl 0
    STAT tail_repair_time 0
    STAT flush_enabled yes
    STAT hash_algorithm murmur3
    STAT lru_maintainer_thread yes
    STAT hot_lru_pct 32
    STAT warm_lru_pct 32
    STAT expirezero_does_not_evict no
    STAT idle_timeout 0
    STAT watcher_logbuf_size 262144
    STAT worker_logbuf_size 65536
    STAT track_sizes no
    END
    

     
    Last edited: Jul 16, 2016
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  4. pamamolf

    pamamolf Well-Known Member

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    Yes :)
     
  5. eva2000

    eva2000 Administrator Staff Member

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    was actually referring to -o slab_chunk_max new feature not the other new features heh