有關95th percentile問題

如果我用緊10MB寬頻,95th percentile In同Out都顯示8MB以上,請問係唔係要升級去快D嘅寬頻?

我夜晚流量係得1~2MB。

10M要用爆好易
有得揀既最少都用100M啦

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回覆 2# KinChungE

因為唔係香港,所以頻寬比較貴。我知95th percentile通常係Hosting或ISP用嚟收客錢嘅參考指數,唔知我呢個Case啱唔啱用。

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你自己接受到就okay啦,你理得佢幾多percentile

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最少上100M,咩年代啊 內地都100M普及化啦。

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外國嘅話要睇住邊, 聽聞美國 ADSL 都貴到飛起
又唔係起Server, 要咁大bw 其實無意思
我自己第一個plan 10M up/down 其實夠, 不過當初HKXN sales 話無10M plan 續先升

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For home use, it is only a matter of cost and benefit (i.e. user experience)... looking for a justification to pay for more?

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樓主可以考慮下自己每日花幾多時間上網。如果樓主一日上一個鐘網,咁我覺得唔值得升級。但如果每日都上 5-6 粒鐘,咁升級都好理所當然。

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95th percentile係咁計法

From https://en.wikipedia.org/wiki/Burstable_billing
Bandwidth is measured (or sampled) from the switch or router and recorded in a log file. In most cases, this is done every 5 minutes. At the end of the month, the samples are sorted from highest to lowest, and the top 5% (which equal to approximately 36 hours of a 30-day billing cycle) of data is thrown away. The next highest measurement becomes the billable use for the entire month.

即係話,佢係你最高用量果5%唔計之後個最高果一個sample,但係就唔會顧及其餘的用量。你95th percentile係8M可以係 (a) 一個月95%時間用緊8Mbps,又可以係 (b) 一個月94%時間用緊0.1Mbps + 1%時間用緊8Mbps

所以95th percentile同你需唔需要升級無太大關係。

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