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SELECT concat(round(table_rows/1000000,2),'M',' rows'),concat(round(data_length/(1024*1024*1024),2),'G',' DATA'),concat(round(index_length/(1024*1024*1024),2),'G',' idx'),concat(round((data_length+index_length)/(1024*1024*1024),2),'G',' total_size'),concat(round(index_length/data_length,2),' idxratio ...

sysctl.conf

fs.file-max=51200 net.core.netdev_max_backlog =  32768 net.core.somaxconn = 32768 net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 #net.ipv4.tcp_timestamps = 0 #net.ipv4.tcp_tw_len = 1 net.ipv4.tcp_mem = 94500000 915000 ...
dstat -cgilpymn collectl and collectd
DNS DNS记录,需要你到你的域名托管商那里进行设置或者你自己管理DNS服务器。不少域名托管商不支持txt记录或者不支持DKIM记录,所以你就无法使用SPF和DKIM的功能。 DNS的修改,需要48小时以上才能生效。 国内的万网是不支持 ...
http://citeseerx.ist.psu.edu/
http://wiki.secondlife.com/wiki/Message_Queue_Evaluation_Notes
pv stream nessus Nikto skipfish ratproxy
http://www.westnet.com/~gsmith/content/linux-pdflush.htm   The Linux Page Cache and pdflush: Theory of Operation and Tuning for Write-Heavy Loads As you write out data ultimately intended for disk, Linux caches this information in an area of memory called the page cache. You can find ...
http://www.linuxlinks.com/article/20101024141930129/ServerProvisioning.html   FAI High quality tool for fully automatic installation of Linux systems xCAT Extreme Cluster Administration Toolkit Spacewalk Systems management software developed by Red Hat Cobbler OS provi ...
最佳开源配置管理工具: Puppet / 提名:OpenQRM, Cfengine, Chef ,Bcfg2
defaults,commit=600,noatime,nodiratime
ALT+E/F/B 
iodump iotop iopp pidstat blktrace
http://www.xasun.com/article/2a/1991$3.html   1.With the Xeon 5500 series processorsIntel has diverged from its traditional Symmetric Multiprocessing (SMP) architectureto a Non-Uniform Memory Access (NUMA) architecture.In a two-processor scenario, the Xeon5500 series processors are connected throug ...
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