Google Education – access infrastructure guide Uživatelský manuál stáhnout pdf (Strana 3)

Minimum standards for accessing Google cloud services

The table below lists the minimum speed you need per concurrent user for them to have a

minimally acceptable experience. In summary

Per concurrent user you will need between 64kbps to 1Mbps depending on what services your

users use. Simple formula is:

TBWx = (%C * CCUx * SBWx)

+ (%C * CCUx * SBWx)

+......+(%C * CCUx * SBWx)

• TBWx=TotalBWatlevelXofyournetwork

• CCUx=NumberofconcurrentusersatlevelXofyournetwork

• %C=Percentageofconcurrentusersusingaparticularserviceatlevelxofyournetwork

• SBWx=RecommendedKbpsbasedontheservice(seetablebelow)

• n=numberofservicesbeingaccessedatlevelxofyournetwork

TheuserexperiencewillalsobegreatlyaectedbylatencytoGoogle’sservers,

Google Apps

Service

12Kbps connection 32Kbps connection 64Kbps connection 128Kbps +

connection

Gmail 2 min to load

if at all

Initial page

8-20 seconds

full load > 1 Min

- full load 2 - 5s Better than 64kbs

Chat in Gmail Will not load > 1 Min to load if ever Loadsin4-10s Better than 64kbs

Docs /

spreadsheet

(Open doc)

Will not load -Initialpage5-20s

-fullload>1Min

4-10s Better than 64kbs

Docs /

Spreadsheets

(collaborative

editing)

Will not load Noticeably slower

for edits to show

comparedto64K

Changes showed

up quick enough

for it to simulate a

conversation i.e real

time

Better than 64kbs

Site editing No test No test Text page loads in

3-5secs,Editors

load about the same

Imageloadof385KB

jpegletook~1Min

Text page loads in

2-4secs.Editors

load about the same

Imageloadof385KB

jpegletook~25secs

Slides 4-10sSpeedisjust

about manageable for

editing

better than 64kbps

Hangouts N/A N/A AudioOnly:35kbps

up/down

Video : starting at

150kbpsup/500kbps

down up to the ideal =

1 Mbps up/down

Drive 4-8s

Speed is just about

manageable for

loading drive listings

better than 64kbps

Youtube 500kbpsandabove

Chromebooks

& Tablets

200kbpsto512kbps

recommended per

concurrent user

Tablets

1 2 3 4 5 6 7 8 9 10 11

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