Flash  Memory  Summit  2015Santa  Clara,  CA 1

THE  IMPACT  OF  FILE  SYSTEMS

YONGJUN  ZOUBusiness  Development  Manager,  Tuxera  Inc.

Increasing Video Recording Speed

FACTORS  AFEECT  OVERALL  VIDEO  RECORDING  PERFORMANCE

Flash  Memory  Summit  2015Santa  Clara,  CA 2

Optimizing  software for  the  best  possible  performance

Flash Memory FILE  SYSTEMSController Firmware

OVERALL  PERFORMANCE

TEST ENVIROMENT INTRODUCTION

Flash  Memory  Summit  2015Santa  Clara,  CA

RECORDING

From  left  to  right:• Samsung  Pro  64GB• Toshiba  Exceria Pro  UHS-­II  32GB

TEST  ENVIRONMENT

TEST RESULT: 4-­STREAM VIDEO RECORDING

Flash  Memory  Summit  2015Santa  Clara,  CA

Hardware  setup:  • IP  Camera  (ARM  

Cortex  A9  Dual  Core)• Samsung  Pro  64GB  

UHS-­I  microSDXCCard

0

1

2

3

4

5

6

7

8

9

60 120 180 240 300

Writ

e sp

eed

(MB

/s)

Total amount written (GB)

VFAT stream 1VFAT stream 2VFAT stream 3VFAT stream 4

Tuxera exFAT stream 1Tuxera exFAT stream 2Tuxera exFAT stream 3Tuxera exFAT stream 4

Open source exFAT stream 1Open source exFAT stream 2Open source exFAT stream 3Open source exFAT stream 4

Tests  with  Open  Source  exFAT  and  VFAT  were  terminated  after  5  hours  writing  178GB of  data  (open  source  exFAT)  and  91GB(VFAT). Tuxera  exFAT  wrote  over  316GB of  data  in  just  4.5  hours.

TEST RESULT: 2-­STREAM VIDEO RECORDING

Flash  Memory  Summit  2015Santa  Clara,  CA

0

10

20

30

40

50

60

70

29 58 87 116 145

Writ

e sp

eed

(MB

/s)

Total amount written (GB)

H.265/HEVC 4K UHD speed (17.7 MB/s)

VFAT stream 1VFAT stream 2

Tuxera exFAT stream 1Tuxera exFAT stream 2

Open source exFAT stream 1Open source exFAT stream 2

Hardware  setup:  • X86+Linux device• Toshiba  Exceria

Pro  32GB  UHS-­II  SDHC  Card

FILE SYSTEM IMPACTS

Flash  Memory  Summit  2015Santa  Clara,  CA

Right  file  system  implementations  bring  significant  better  video  recording  experience.

PERFORMANCE  (Speed  &  CPU)

FLASH MEMORY LIFETIME

RELIABILITY

SUSTAINABILITY  (File  system  fragmentation)

POWERED  BY

TUXERA  ECOSYSTEM:  FLASH  MEMORY  PARTNERS

Flash  Memory  Summit  2015Santa  Clara,  CA

TUXERA  FAIL-­SAFE  TECHNOLOGY  DEMO  @SDA

Flash  Memory  Summit  2015Santa  Clara,  CA

August  12-­13thSD AssociationBooth  Number  119

Flash  Memory  Summit  2015Santa  Clara,  CA

THANK  YOU!

www.tuxera.com