The next generation of IBM’s X-series servers will be able to accommodate solid-state Flash drives clipped into their DIMM memory slots, potentially improving the response times of fast-paced enterprise applications.
On Thursday, IBM unveiled the Series 6 generation of its System X x86-based serv[……]
upload on 2014.2 [MySQL 5.5&5.6 new features summary] Download this PDF[……]
Download PDF: [SHOUG.LOUISLIU]Exadata在电商的实践[……]
TPCC对mysql 5.5.27做一次性能测试时遭遇 Segmentation fault,gdb调试记录之:
[root@db-81 ~]# uname -a Linux db-81 2.6.18-194.el5 #1 SMP Mon Mar 29 22:10:29 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux [root@db-81 ~]# more /proc/meminfo |grep Total MemTotal: 49455412 kB HighTotal: 0 kB LowTotal: 49[......]
Testing three PCIE cards’s performance for all of scenes using fio
Reference:fio parameter setting[……]
By wwf from ebay COC about Optimizer in Oracle 11g.
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systemtap发行版本提供了socktop,用于监控socket套接字之间的通信,具体如下：
[root@db-42 ~]# socktop -h
USAGE: socktop [-d] [-i interval] [-N num] [-P protocol]... [-f family]...
[-t stype]... [-n pname]... [-p pid]... [-u username]... [-h]
-d # print network device traffic (default: off)[......]
noodba同学写的基于mysql的 WORKLOAD REPOSITORY工具,目前还没有开源 非常的给力！！
主要思想为一台管理机器,集中了所有client端的数据,client 为mysql database 使用host_id来区分 如 host_id=1代表mysql database 1,host_id=2 代表mysql database 2.
具体采集AWR过程如下：
[mysql@hadooptest2 myawr]$ perl myawrrpt.pl ===============================================[......]