Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

linuxÍøÂç²ÎÊý½âÎö

linuxÍøÂç²ÎÊýÖ÷ҪλÓÚÏÂÃæÁ½¸öĿ¼ÏÂ:/proc/sys/net/core/ºÍ/proc/sys/net/ipv4/, ÏÂÃæ·Ö±ð¶ÔÕâÁ½¸öĿ¼Ï³£Óõļ¸¸öÍøÂç²ÎÊý×öÏÂ˵Ã÷:
 
1./proc/sys/net/core/
 
$ /proc/sys/net/core/somaxconn
listen()µÄĬÈϲÎÊý,¹ÒÆðÇëÇóµÄ×î´óÊýÁ¿.ĬÈÏÊÇ128.¶Ô·±Ã¦µÄ·þÎñÆ÷,Ôö¼Ó¸ÃÖµÓÐÖúÓÚÍøÂçÐÔÄÜ, ¿É²Î¿¼µÄÓÅ»¯Öµ:2048
 
$ /proc/sys/net/core/wmem_max
×î´ósocketдbuffer,¿É²Î¿¼µÄÓÅ»¯Öµ:131071
 
$ /proc/sys/net/core/rmem_max
×î´ósocket¶Ábuffer,¿É²Î¿¼µÄÓÅ»¯Öµ:131071
 
$ /proc/sys/net/core/netdev_max_backlog
½øÈë°üµÄ×î´óÉ豸¶ÓÁÐ.ĬÈÏÊÇ300,¶ÔÖظºÔØ·þÎñÆ÷¶øÑÔ,¸Ãֵ̫µÍ,¿É²Î¿¼µÄÓÅ»¯Öµ:1000
 
$ /proc/sys/net/core/optmem_max
socket bufferµÄ×î´ó³õʼ»¯Öµ,ĬÈÏ10K,¿É²Î¿¼µÄÓÅ»¯Öµ:20480
 
2./proc/sys/net/ipv4/
 
$/proc/sys/net/ipv4/tcp_tw_recycle
¼Ó¿ì»ØÊÕTIME-WAITÌ×½Ó×Ö.0:¹Ø±Õ;1:¿ªÆô
 
$/proc/sys/net/ipv4/tcp_tw_reuse
¸´ÓÃTIME_WAIT״̬socketµÄ¿ª¹Ø£¬Èç¹û¿ªÆô£¬¿Í»§¶ËÔÚµ÷ÓÃconnectµ÷ÓÃʱ£¬»á×Ô¶¯¸´ÓÃTIME_WAIT״̬µÄ¶Ë¿Ú.0:¹Ø±Õ;1:¿ªÆô
 
$ /proc/sys/net/ipv4/tcp_wmem
TCPдbuffer,¿É²Î¿¼µÄÓÅ»¯Öµ: 4096    16384   131072
$ /proc/sys/net/ipv4/tcp_rmem
TCP¶Ábuffer,¿É²Î¿¼µÄÓÅ»¯Öµ: 4096    87380   174760
$ /proc/sys/net/ipv4/tcp_mem
ͬÑùÓÐ3¸öÖµ,Òâ˼ÊÇ:
net.ipv4.tcp_mem[0]:µÍÓÚ´ËÖµ,TCPûÓÐÄÚ´æѹÁ¦.
net.ipv4.tcp_mem[1]:ÔÚ´ËÖµÏÂ,½øÈëÄÚ´æѹÁ¦½×¶Î.
net.ipv4.tcp_mem[2]:¸ßÓÚ´ËÖµ,TCP¾Ü¾ø·ÖÅäsocket.
ÉÏÊöÄڴ浥λÊÇÒ³,¶ø²»ÊÇ×Ö½Ú.
¿É²Î¿¼µÄÓÅ»¯ÖµÊÇ:196608  262144  393216
 
$ /proc/sys/net/ipv4/tcp_max_syn_backlog
½øÈëSYN°üµÄ×î´óÇëÇó¶ÓÁÐ.ĬÈÏ1024.¶ÔÖظºÔØ·þÎñÆ÷¶øÑÔ,¿ÉÊʵ±µ÷¸ß.
 
$ /proc/sys/net/ipv4/tcp_retries2
TCPʧ°ÜÖØ´«´ÎÊý,ĬÈÏÖµ15,Òâζ×ÅÖØ´«15´Î²Å³¹µ×·ÅÆú.¿É¼õÉÙµ½5,ÒÔ¾¡ÔçÊÍ·ÅÄÚºË×ÊÔ´.
 
$ /proc/sys/net/ipv4/tcp_keepalive_time
$ /proc/sys/net/ipv4/tcp_keepalive_intvl
$ /proc/sys/net/ipv4/tcp_keepalive_probes
Õâ3¸ö²ÎÊýÓëTCP KeepAliveÓйØ.ĬÈÏÖµÊÇ:
tcp_keepalive_time = 7200 seconds (2 hours)
tcp_keepalive_probes = 9
tcp_keepalive_intvl = 75 seconds
Òâ˼ÊÇÈç¹û


Ïà¹ØÎĵµ£º

LinuxÏ mplayer ʹÓÃÊÖ²á


²¥·ÅÎļþ
ʹÓà MPlayer ²¥·ÅýÌåÎļþ×î¼òµ¥µÄ·½Ê½ÊÇ£º
mplayer <somefile>
MPlayer »á×Ô¶¯¼ì²âÎļþµÄÀàÐͲ¢¼ÓÒÔ²¥·Å£¬Èç¹ûÊÇÒôƵÎļþ£¬Ôò»áÔÚÃüÁîÐÐÖÐÏÔʾ¸Ã²¥·ÅÎļþµÄ״̬ÐÅÏ¢£»¶ø¼ÙÈçÊÇÊÓƵÎļþµÄ»°£¬Ôò»á´ò¿ªÒ»¸öеIJ¥·Å´°¿Ú¡£
µ¹ÍËÓë¿ì½ø
ÔÚ²¥·ÅÎļþµÄʱºò£¬Äã¿ÉÒÔͨ¹ýÒÔÏÂÈý×é¿ì½Ý¼üÀ´¶Ô²¥·Å½ø³Ì½øÐе¹Í ......

linuxÉÏʹÓÃBIND½¨Á¢DNS·þÎñÆ÷

ÔÚ±¾ÎÄÖÐÎÒÃÇÓÃRed Hat×÷ΪʾÀý£¬ËùÒÔÄãÒ²ÐíÏ£ÍûʹÓÃBINDµÄRPM°æ±¾£¬¿ÉÒÔͨ¹ýËÑË÷www.rpmfind.netÕÒµ½Ëü£¬ÒòΪʹÓÃRPMÐÎʽµÄ·¢ÐаüÊÇ°²×°BIND×î¼ò±ãµÄ·½·¨¡£
1.ÏÂÔØÁËBINDµÄRPMÖ®ºó£¬±ÈÈçbind-9.1.0-10.i386.rpm£¬ÐèÒªÒÔ³¬¼¶Óû§µÄÉí·ÝÖ´ÐÐrpm -ivh bind-9.1.0-10.i386.rpmÃüÁî¡£ÔÚRPM°²×°BINDʱҪעÒâ¼ì²éÈκÎÄܹ»µ¼Ö°²× ......

Linux ÉèÖû·¾³±äÁ¿Ð¡½á

Linux ÉèÖû·¾³±äÁ¿Ð¡½á
תÔØ×Ô£ºhttp://www.roboticfan.com/blog/user_2005/104/archives/2009/2009617176.shtml
1¡¢×ܽᱳ¾°
ÔÚlinuxϵͳÏ£¬Èç¹ûÄãÏÂÔز¢°²×°ÁËÓ¦ÓóÌÐò£¬ºÜÓпÉÄÜÔÚ¼üÈëËüµÄÃû³Æʱ³öÏÖ“command not found”µÄÌáʾÄÚÈÝ¡£Èç¹ûÿ´Î¶¼µ½°²×°Ä¿±êÎļþ¼ÐÄÚ£¬ÕÒµ½¿ÉÖ´ÐÐÎļþÀ´½øÐвÙ×÷¾ÍÌ«·±Ëö ......

linuxÏÂifconfig, DNSÒÔ¼°routeÅäÖÃ

Ô­ÎÄ£ºhttp://www.cnitblog.com/201/archive/2009/08/20/60887.html
ÊìϤʹÓÃifconfig »á·Ç³£·½±ã¡£¡¡
¡¡ifconfig eth0 ÐÂip
¡¡¡¡È»ºó±à¼­/etc/sysconfig/network-scripts/ifcfg-eth0£¬ÐÞ¸Äip
¡¡¡¡Ò»¡¢ÐÞ¸ÄIPµØÖ·
¡¡¡¡[aeolus@db1 network-scripts]$ vi ifcfg-eth0
¡¡¡¡DEVICE=eth0
¡¡¡¡ONBOOT=yes
¡¡¡¡BOOTPROTO=s ......

linux³£¼û½ø³Ì


Íü¼ÇÔÚÄÄÀï¿´µ½µÄÁË¡£¡£Ô­×÷ÕßÇë¼ûÁÂ~~
 
Fedora Core 6
¶ÔÓÚ·þÎñ½ø³ÌµÄ±ä»¯
bluetooth
Ïà¹ØµÄ·þÎñÓÐ bluetooth,hcid,hidd,sdpd,dund,pand
capi
½öÕë¶ÔISDN
Óû§
mctrans SELINUX
±ØÐëµÄ·þÎñ¡£
mdmpd
¼àÊÓ¶à·É豸µÄ·þÎñ
pcscd
Ö§³ÖÖÇÄÜ¿¨µÄ·þÎñ£¬ÕâÊÇFC6
¼ÓÈëÖÇÄÜ¿¨Ö§³ÖµÄÌØÕ÷Ö®Ò»
²¹³ä¼¸¸öFedo ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ