BlogJava-A Developer's Notebook-随笔分类-其它技术http://www.blogjava.net/jarod/category/26901.htmlzh-cnWed, 02 Jan 2008 08:24:00 GMTWed, 02 Jan 2008 08:24:00 GMT60Firefox tuninghttp://www.blogjava.net/jarod/archive/2007/12/28/171330.htmlJarodJarodFri, 28 Dec 2007 14:03:00 GMThttp://www.blogjava.net/jarod/archive/2007/12/28/171330.htmlhttp://www.blogjava.net/jarod/comments/171330.htmlhttp://www.blogjava.net/jarod/archive/2007/12/28/171330.html#Feedback0http://www.blogjava.net/jarod/comments/commentRss/171330.htmlhttp://www.blogjava.net/jarod/services/trackbacks/171330.html
内存缓存：
browser.cache.memory.enable=true
内存缓存开关
browser.cache.memory.capacity=51200
内存缓存大小，单位KB；-1: (默认)根据系统可用内存动态调整；

TIPS: 如果内存大可以关闭磁盘缓存，把此值设大；如果不关闭磁盘缓存，建议保留默认值

磁盘缓存：
browser.cache.disk.enable=false
磁盘缓存大小
browser.cache.disk.capacity=50000
磁盘缓存大小
browser.cache.disk.parent_directory=用户目录

TIPS: 提升性能第二法是把内存缓存关闭，把browser.cache.disk.parent_directory指向ramdisk

DNS：
network.dns.disableIPv6=false
TIPS: 建议设成true，关闭ipv6的dns解释，对打开网页的速度有比较明显的提高

HTTP连接数：
network.http.max-connections=64
最大连接数
network.http.max-connections-per-server=16
对每个服务器的最大请求数
network.http.max-persistent-connections-per-server=4
对每个服务器长连接的最大数
network.http.max-persistent-connections-per-proxy=4
对每个代理的最大长连接数

上面几个值可根据自己的机器情况配置

开启Pipelining:(http://www.mozilla.org/projects/netlib/http/pipelining-faq.html)
对多内容的页面比较有用
network.http.pipelining=true
开关pipelining
network.http.proxy.pipelining=true
开关代理pipelining
network.http.pipelining.maxrequests=8
单个网页的最大请求数有效值1-8

加快页面渲染速度
nglayout.initialpaint.delay=0
这个值为firefox等待多少毫秒后开始渲染页面。默认值250。网速快时设成0可以加速网页渲染。网速慢的最好就不要改了。对网速物慢的，如56kbit/s拨号上网的，还应适当增大此值，不然firefox的CPU使用就会上升很快

不检查插件兼容性
extensions.checkCompatibility=false
对于想试3.0的朋友此项特有用。因为firefox插件的兼容性检查是基于版本号的，所以某些“不兼容”的插件不一定就是不兼容

不使用页面指定的字体
browser.display.use_document_fonts=false
对于像我的linux系统，使用的中文字体是雅黑，但有些页面是指定使用宋体，显示的字体很难看，设这个值就可以忽视页面字体了

Jarod 2007-12-28 22:03 发表评论

]]>汇编的笔记http://www.blogjava.net/jarod/archive/2007/10/27/156373.htmlJarodJarodSat, 27 Oct 2007 09:36:00 GMThttp://www.blogjava.net/jarod/archive/2007/10/27/156373.htmlhttp://www.blogjava.net/jarod/comments/156373.htmlhttp://www.blogjava.net/jarod/archive/2007/10/27/156373.html#Feedback0http://www.blogjava.net/jarod/comments/commentRss/156373.htmlhttp://www.blogjava.net/jarod/services/trackbacks/156373.htmlRegisters

General-purpose registers

Register Description
EAX Accumulator for operands and results data
EBX Pointer to data in the data memory segment
ECX Counter for string and loop operations
EDX I/O pointer
EDI Data pointer for destination of string operations
ESI Data pointer for source of string operations
ESP Stack pointer
EBP Stack data pointer

Segment registers

Segment Register Description
CS Code segment
DS Data segment
SS Stack segment
ES Extra segment pointer
FS Extra segment pointer
GS Extra segment pointer

Instruction pointer register

EIP keeps track of the next instruction code to execute

Control registers

Control Register Description
CR0 System flags that control the operating mode and states of the processor
CR1 Not currently used
CR2 Memory page fault information
CR3 Memory page directory information
CR4 Flags that enable processor features and indicate feature capabilities of the processor

Sections

.section .data

section for variables declaration

Directive Data Type
.ascii Text string
.asciz Null-terminated text string
.byte Byte value
.double Double-precision floating-point number
.float Single-precision floating-point number
.int 32-bit integer number
.long 32-bit integer number (same as .int)
.octa 16-byte integer number
.quad 8-byte integer number
.short 16-bit integer number
.single Single-precision floating-point number (same as .float)

.equ static variables

.section .rodata

section for constants declaration

.section .bss

buffers

Directive Description
.comm Declares a common memory area for data that is not initialized
.lcomm Declares a local common memory area for data that is not initialized

.section .text

assembly codes

Directive Description
.global _start entry point

Jarod 2007-10-27 17:36 发表评论

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