基于實(shí)測(cè)流量的網(wǎng)際分組丟失率分析
發(fā)布時(shí)間:2019-02-11 16:14
【摘要】:分組丟失率是評(píng)價(jià)網(wǎng)絡(luò)性能的一個(gè)重要指標(biāo)。提出了一種利用完整TCP流計(jì)算實(shí)測(cè)數(shù)據(jù)中分組丟失率的方法,并基于實(shí)測(cè)數(shù)據(jù)對(duì)CERNET江蘇省網(wǎng)與外部不同網(wǎng)絡(luò)分區(qū)的分組丟失率進(jìn)行分析。算法給出了基于實(shí)測(cè)數(shù)據(jù)的分組丟失率包括首次分組丟失率pfl、整體分組丟失率psl和重傳率prp 3個(gè)測(cè)度。統(tǒng)計(jì)分析表明,在絕大多數(shù)情況下,pfl比psl小,而prp比pfl和psl明顯要高,驗(yàn)證了分組丟失對(duì)網(wǎng)絡(luò)性能的影響以及重傳率明顯比分組丟失率高。
[Abstract]:Packet loss rate is an important index to evaluate network performance. This paper presents a method to calculate packet loss rate in measured data by using complete TCP stream. Based on the measured data, the packet loss rate of CERNET Jiangsu Province network and different external network partitions is analyzed. The algorithm gives three measures of packet loss rate based on measured data, including the first packet loss rate (pfl,), the overall packet loss rate (psl) and the retransmission rate (prp). Statistical analysis shows that, in most cases, pfl is smaller than psl, while prp is significantly higher than pfl and psl. It is verified that packet loss affects network performance and retransmission rate is significantly higher than packet loss rate.
【作者單位】: 東南大學(xué)計(jì)算機(jī)科學(xué)與工程學(xué)院;江蘇省計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973計(jì)劃”)基金資助項(xiàng)目(2009CB320505)~~
【分類號(hào)】:TP393.06
[Abstract]:Packet loss rate is an important index to evaluate network performance. This paper presents a method to calculate packet loss rate in measured data by using complete TCP stream. Based on the measured data, the packet loss rate of CERNET Jiangsu Province network and different external network partitions is analyzed. The algorithm gives three measures of packet loss rate based on measured data, including the first packet loss rate (pfl,), the overall packet loss rate (psl) and the retransmission rate (prp). Statistical analysis shows that, in most cases, pfl is smaller than psl, while prp is significantly higher than pfl and psl. It is verified that packet loss affects network performance and retransmission rate is significantly higher than packet loss rate.
【作者單位】: 東南大學(xué)計(jì)算機(jī)科學(xué)與工程學(xué)院;江蘇省計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“973計(jì)劃”)基金資助項(xiàng)目(2009CB320505)~~
【分類號(hào)】:TP393.06
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