Well, knew I forgot something :) Just pushed a fix for that for the next
release.

You'll want to avoid setting slab_chunk_max on your own. Only adjust with
-I, and you can see the state of -I via the "item_size_max" stat in there.

Also, for what it's worth: Your `-m 8` may use more than 8 megabytes of
RAM if you use more than one slab class. there is a minimum memory
assignable of 1mb per slab class.

-Dormando

On Fri, 15 Jul 2016, Centmin Mod George Liu wrote:

> with /usr/local/bin/memcached -d -m 8 -l 127.0.0.1 -p 11211 -c 2048 -b 2048 
> -R 200 -t 4 -n 72 -f 1.25 -u nobody -o 
> slab_reassign,slab_automove,slab_chunk_max=16384 -P
> /var/run/memcached/memached1.pid
> stats output as
>
> echo stats settings | nc 127.0.0.1 11211      
> STAT maxbytes 8388608
> 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 1.25
> 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 no
> STAT hashpower_init 0
> STAT slab_reassign yes
> STAT slab_automove 1
> STAT lru_crawler no
> STAT lru_crawler_sleep 100
> STAT lru_crawler_tocrawl 0
> STAT tail_repair_time 0
> STAT flush_enabled yes
> STAT hash_algorithm jenkins
> STAT lru_maintainer_thread no
> 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
>
> On Friday, July 15, 2016 at 11:56:03 PM UTC+10, Centmin Mod George Liu wrote:
>       any tools or command line available to get the slab_chunk_max size in 
> 1.4.29 ?
> memcached-tools doesn't see any in settings probably needs an update ?
>
> 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     1380656
>               bytes_read     1904536
>            bytes_written     4211631
>               cas_badval           0
>                 cas_hits           0
>               cas_misses           0
>                cmd_flush           0
>                  cmd_get        1649
>                  cmd_set        1306
>                cmd_touch           0
>              conn_yields           0
>    connection_structures          13
>    crawler_items_checked        1536
>        crawler_reclaimed           0
>         curr_connections          12
>               curr_items         532
>                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        1108
>               get_misses         541
>               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         366
>   lru_maintainer_juggles        9230
>        lrutail_reflocked           0
>             malloc_fails           0
>            moves_to_cold         478
>            moves_to_warm          15
>         moves_within_lru         281
>                      pid       21995
>             pointer_size          64
>                reclaimed           0
>     rejected_connections           0
>             reserved_fds          20
>            rusage_system    0.456666
>              rusage_user    1.096666
>    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  1468590786
> time_in_listen_disabled_us           0
>        total_connections          78
>              total_items        1306
>               touch_hits           0
>             touch_misses           0
>                   uptime         987
>                  version      1.4.29
>
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