The PHP Accelerator 1.2 By Nick Lindridge

Abstract

Introduction !

#

"

$ $

$ %

$ &

PHP Engine Integration ' $ $

$ $

$

$

$

)

(

$ $

$ *

$

*

+

$

$

+

Cache Design Request Handling $ %

$ $

, $

.

% % $

$

The File Cache and Code Serialisation $

&

$

$ !

+

/

0

"

) / - 1

.

© Nick Lindridge, April 2002.

$

$

$

$

%

$

+$

$ $

$

$ $

$

$ +

$

/

$ %

$

$ + $ +

The Direct Access Shared Memory Cache 2

$ $ 3

$ $ $ $

)+

4

$ $

$

Cache Locks and Concurrent Reading/Writing *

+

$

$ $

$

$ 2 $ $ +

$ ,

*

+

+

+

$ $

$ $ $

$ &

3

5

$

5

+ $

$

$

4

%

$ $ )

$

$

© Nick Lindridge, April 2002.

Crash Detection + )

+

$

$

+ %6

$

$ +

+

+ +

$ +

$ + +

+ %

+ $ $

$

$

Code Optimisation $ 6

& $

$7

8)

8 ) 8)$ +

9 9

9

9

$ + 7

$

!:

$ op op op op op op op op op op op op op op op op

0 2 ZEND_FETCH_W str='x' fetch local 1 2 ZEND_ASSIGN var* 0 str='inefficient' R1 (unused) 2 3 ZEND_INIT_STRING R2 3 3 ZEND_ADD_STRING tvar T2 Vconst ‘This’ R2 4 3 ZEND_ADD_STRING tvar T2 Vconst ‘ ‘ R2 5 3 ZEND_ADD_STRING tvar T2 Vconst ‘is’ R2 6 3 ZEND_ADD_STRING tvar T2 Vconst ‘ ‘ R2 7 3 ZEND_ADD_STRING tvar T2 Vconst ‘rather’ R2 8 3 ZEND_ADD_STRING tvar T2 Vconst ‘ ‘ R2 9 3 ZEND_FETCH_R str='x' fetch local R3 10 3 ZEND_ADD_VAR T2 var* 3 R2 11 3 ZEND_ADD_STRING tvar T2 Vconst ‘ ‘ R2 12 3 ZEND_ADD_STRING tvar T2 Vconst ‘code’ R2 13 3 ZEND_ADD_CHAR ‘\n’ R2 14 3 ZEND_ECHO T2 15 5 ZEND_RETURN val=1

%

$

& $ <= $

9 ; $

! op op op op op op op op

0 1 2 3 4 5 6 7

2 2 3 3 3 3 3 5

ZEND_FETCH_W str='x' fetch local ZEND_ASSIGN var* 0 str='inefficient' R3 ZEND_INIT_STRING R2 ZEND_ADD_STRING tvar T2 Vconst ‘This is rather ‘ R2 ZEND_ADD_VAR T2 var* 3 R2 ZEND_ADD_STRING tvar T2 Vconst ‘ code\n’ R2 ZEND_ECHO T2 ZEND_RETURN val=1

© Nick Lindridge, April 2002.

1 <=

$ $

1

#

*

$

# 9

#

*

#

9 9

$ 7 $

$

$

$

Performance Gains $

" $

$

3 2

+

> $ >

? **

# ? ** $

$ +*

#

+ +

+ +

#

Summary $ 5

$ +

$ $ $ 5

+ $

$

© Nick Lindridge, April 2002.

$

$

$ $

+

The PHP Accelerator 1.2

Page 1 ... presents an overview of the PHPA design, and how PHPA integrates with ... Before executing a PHP script, the PHP engine1 first reads, parses, and ...

92KB Sizes 2 Downloads 18 Views

Recommend Documents

ACCelerator Survival Guide.pdf
Page 1 of 2. Phone: 512.223.7348. Website: http://www.austincc.edu/highland-campus/accelerator. *Hours of Operation. Mondays-Fridays: 7:30AM-10PM. Saturdays: 8AM-7PM. Sundays: 12PM-6PM. ACCELERATOR. SURVIVAL. GUIDE. Service Location Phone. Academic C

Accelerator Compiler for the VENICE Vector ... - Semantic Scholar
This paper describes the compiler design for VENICE, a new soft vector processor ... the parallelism of FPGAs often requires custom datapath ac- celerators.

the financial accelerator in a quantitative business cycle ...
and C.M Starr Center for financial support. ** Each author is also ... the slow recovery of the economy from the 1990-1991 recession on heavy corporate ...... analyze how a currency crisis may induce financial distress that is transmitted to the.

hybris Telco Accelerator press release.pdf
Page 1. Whoops! There was a problem loading more pages. Retrying... hybris Telco Accelerator press release.pdf. hybris Telco Accelerator press release.pdf.Missing:

Accelerator One Pager (1-15-16)
Jan 15, 2016 - The AT&T Aspire Accelerator aims to enhance education by supporting and ... non-profits throughout the country, and they will have access to:.

an accelerator-centric OS for omni-programmable ...
Design alternatives. Distributed vs. centralized. ... Alternatives to NXU OS abstractions. Earlier alterna- ..... Conservation Cores: Reducing the Energy of Mature.

[PDF] HANDBOOK OF ACCELERATOR PHYSICS AND ...
formulae, recipes and material data pooled from the lifetime experience of many of the world s most able practitioners of the art and science of accelerators.

An Energy-efficient Matrix Multiplication Accelerator by Distributed In ...
Email:[email protected] ... power consumption from additional AD-conversion and I/Os ... interface of logic crossbar requires AD/DA conversions, which.

A Parallel Accelerator for Semantic Search
Abstract- Semantic text analysis is a technique used in ... algorithm for semantic analysis. .... accelerator, its internal components and describe the software-.

design of a 3-mev particle accelerator
The tables in this section are incomplete at this point. Please refer to the. Appendix for a more comprehensive list. Table 1. Inventory of main components of vacuum chamber and ports. PRODUCT / SUPPLIER. QTY COST. 304 grade SS vacuum cylinder wall S