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ttserver性能报告
- 博客分类:
- 几种流行的高速缓存机制比较
从数据库读入和写入ttserver 共耗时:312525259.0 (ms) = 3.6172 (天)
写入总条数:5832998+7324557+5937646+5594306+2166555=26856062 = 2680万
平均每条记录写入时间:312525259/26856062=11.637 ms
Redis, Memcached, Tokyo Tyrant and MySQL comparision
Filed Under: ASP.NET, benchmark, Technology by Nguyễn Bá Khoa — 2 Comments
13/11/2010
I wanted to compare the following DBs, NoSQLs and caching solutions for speed and connections. Tested the follo ...
oracle 数据库表优化
- 博客分类:
- sql
oracle 有时候 性能优化需要用到:
analyze table base_site_info compute statistics;
java 方法 参数
- 博客分类:
- java 基础
an argument usually
looks like a piece of information provided to the method, not something to be
modified. This is an important guarantee, since it makes code easier to write and understand.
今日群里问起一个问题:echo 123|md5sumba1f2511fc30423bdbb183fe33f3dd0f - php -r "echo md5('123');"202cb962ac59075b964b07152d234b70两者的md5值不一致,于是有很多有趣的解法:1 Mysql解法:mysql> select md5('123');+----------------------------------+| md5('123') |+----------------------------------+| 20 ...
[oracle@centos223 samba]$ cat smb.conf
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options (perhaps too
# many!) most of which are not shown in this example ...
sed -i "1s/oldstr/newstr/" filename
示例:
config文件:
[wusx@centos245 gather]$ cat config
start=359822
end=550000
threads=15
output=/home/wusx/gather/output
log=/home/wusx/gather/_wget.log
#将当前下的文档序列,写回config文件。
sed -i "1s/start=$(($i-1))/start=$i/" /home/wusx/gat ...
shell find scp 命令
- 博客分类:
- linux shell
查询某个文件下 文件大小大于 10k 的文件 :
find /home/user/dir -size +10k
查找大于4的文件,全部复制到另一目录:
find /home/user/dir/ -size +4k -exec cp {} /home/user/newdir/ \;
scp 从本机拷贝到远程服务器:
scp valid/* wusx@192.168.2.245:/home/wusx/gather/valid/
从远处服务器拷贝到本地:
scp user@192.168.2.245:/home/user/di ...
首先配置文件:
[wusx@centos245 gather]$ cat config
start=359822
end=550000
threads=15
output=/home/wusx/gather/output
log=/home/wusx/gather/_wget.log
然后运行脚本:
[wusx@centos245 gather]$ cat wget.sh
#!bin/sh
#执行下载任务
#
#Threads=10;
#i=100000;
#max=999999;
filename=/home/wusx/gather/co ...
shell 写道
curl 下载页面时,时常会乱码,可以用:iconv -f gbk -t utf-8 来转码;示例:
[oracle@localhost ~]$ curl http://www.ip138.com/ip2city.asp | grep body <body style="margin:0px"><center>?μ?Pμ?·?£o[114.249.221.61] </center></body></html>[oracle@localhost ~]$ curl http://www.ip ...
方式一:
[root@centos200 monitor_adsl_connect]# ifconfig
方式二:
[oracle@localhost ~]$ curl http://www.ip138.com/ip2city.asp | grep body | awk -F "[" '{print $2}'| awk -F "]' '{print $1}'
114.249.210.26
方式三:
[wusx@centos245 CycleTaskManager]$ curl -s 'http://checkip.dyndn ...
比较两个字符串是否相等的办法是:
if [ "$test"x = "test"x ]; then
这里的关键有几点:
1 使用单个等号
2 注意到等号两边各有一个空格:这是unix shell的要求
3 注意到"$test"x最后的x,这是特意安排的,因为 ...
-rw-r--r-- 1 root root 1037 04-20 15:26 monitor_adsl_connect.log-rw-r--r-- 1 root root 1876 04-20 15:05 monitor_adsl_connect.sh
-rw-r--r-- 1 root root 1664 04-20 14:39 monitor_adsl_connect.sh.bak
-rw-r--r-- 1 root root 122 04-20 15:26 monitor.pid
-rw-r--r-- 1 root root 300 04-20 15:12 status.log ...
如表:
create table TEST_FOR_CYCLE_TASK_MANAGER(
"ID" NUMBER not null,
"SITE" VARCHAR2(1024),
"ACCESS_DATE" VARCHAR2(16),
"LINECOUNT" NUMBER,
"VALID_LINECOUNT" NUMBER,
"ALL_404" NUMBER,
...
Array.prototype.delRepeat=function(){var newArray=[];var provisionalTable = {};for (var i = 0, item; (item= this[i]) != null; i++) {var s = typeof(item) + item;if (!provisionalTable[s]) {newArray.push(item);provisionalTable[s] = true;}}return newArray;}
详见:http://www.css88.com/archives/2429
...