memcached -d -m 1024 -u root l 192.168.1.101 -p 12000 -c 256 -P /temp/memcached.pid
-d選項是啟動一個守護進程
-m是分配給Memcache使用的內(nèi)存數(shù)量，單位是MB，我這里是1024MB
-u是運行Memcache的用戶壹若，我這里是root
-l是監(jiān)聽的服務(wù)器IP地址，如果有多個地址的話缤骨，我這里指定了服務(wù)器的IP地址192.168.1.101
-p是設(shè)置Memcache監(jiān)聽的端口含懊，默認是11211，我這里設(shè)置了12000澈歉，最好是1024以上的端口
-c選項是最大運行的并發(fā)連接數(shù)工腋，默認是1024姨丈，我這里設(shè)置了256，按照你服務(wù)器的負載量來設(shè)定
-P是設(shè)置保存Memcache的pid文件擅腰，我這里是保存在 /tmp/memcached.pid
memcached啟動選項如下：
-p 使用的TCP端口蟋恬，默認為11211
-m 最大內(nèi)存大小默認為64m
-vv 用very verbose模式啟動，調(diào)試信息和錯誤輸出到控制臺
-d 作為daemon在后臺啟動
$ memcached -h
memcached 1.4.24
-p <num> TCP port number to listen on (default: 11211)
-U <num> UDP port number to listen on (default: 11211, 0 is off)
-s <file> UNIX socket path to listen on (disables network support)
-A enable ascii "shutdown" command
-a <mask> access mask for UNIX socket, in octal (default: 0700)
-l <addr> interface to listen on (default: INADDR_ANY, all addresses)
<addr> may be specified as host:port. If you don't specify
a port number, the value you specified with -p or -U is
used. You may specify multiple addresses separated by comma
or by using -l multiple times
-d run as a daemon
-r maximize core file limit
-u <username> assume identity of <username> (only when run as root)
-m <num> max memory to use for items in megabytes (default: 64 MB)
-M return error on memory exhausted (rather than removing items)
-c <num> max simultaneous connections (default: 1024)
-k lock down all paged memory. Note that there is a
limit on how much memory you may lock. Trying to
allocate more than that would fail, so be sure you
set the limit correctly for the user you started
the daemon with (not for -u <username> user;
under sh this is done with 'ulimit -S -l NUM_KB').
-v verbose (print errors/warnings while in event loop)
-vv very verbose (also print client commands/reponses)
-vvv extremely verbose (also print internal state transitions)
-h print this help and exit
-i print memcached and libevent license
-V print version and exit
-P <file> save PID in <file>, only used with -d option
-f <factor> chunk size growth factor (default: 1.25)
-n <bytes> minimum space allocated for key+value+flags (default: 48)
-L Try to use large memory pages (if available). Increasing
the memory page size could reduce the number of TLB misses
and improve the performance. In order to get large pages
from the OS, memcached will allocate the total item-cache
in one large chunk.
-D <char> Use <char> as the delimiter between key prefixes and IDs.
This is used for per-prefix stats reporting. The default is
":" (colon). If this option is specified, stats collection
is turned on automatically; if not, then it may be turned on
by sending the "stats detail on" command to the server.
-t <num> number of threads to use (default: 4)
-R Maximum number of requests per event, limits the number of
requests process for a given connection to prevent
starvation (default: 20)
-C Disable use of CAS
-b Set the backlog queue limit (default: 1024)
-B Binding protocol - one of ascii, binary, or auto (default)
-I Override the size of each slab page. Adjusts max item size
(default: 1mb, min: 1k, max: 128m)
-F Disable flush_all command
-o Comma separated list of extended or experimental options
- (EXPERIMENTAL) maxconns_fast: immediately close new
connections if over maxconns limit
- hashpower: An integer multiplier for how large the hash
table should be. Can be grown at runtime if not big enough.
Set this based on "STAT hash_power_level" before a
restart.
- tail_repair_time: Time in seconds that indicates how long to wait before
forcefully taking over the LRU tail item whose refcount has leaked.
Disabled by default; dangerous option.
- hash_algorithm: The hash table algorithm
default is jenkins hash. options: jenkins, murmur3
- lru_crawler: Enable LRU Crawler background thread
- lru_crawler_sleep: Microseconds to sleep between items
default is 100.
- lru_crawler_tocrawl: Max items to crawl per slab per run
default is 0 (unlimited)
- lru_maintainer: Enable new LRU system + background thread
- hot_lru_pct: Pct of slab memory to reserve for hot lru.
(requires lru_maintainer)
- warm_lru_pct: Pct of slab memory to reserve for warm lru.
(requires lru_maintainer)
- expirezero_does_not_evict: Items set to not expire, will not evict.
(requires lru_maintainer)
