最近发现从 nas 上 smb 下载速度总是不稳定， 开始能有几 M/s ，很快就下滑，过段时间又好。但是网页测速又都是正常。今天研究了下，好像是不同协议下的情况。用 iperf3 ， 上传开始几 M ，很快就限制了，但是同时用 librespeed 这种 http 的速度则仍然正常。同一个服务器iperf(也测试过 5 线程）和 librespeed 结果如下。同一个服务器部署了 iperf3 和 librespeed-goiperf3 -c xxx

[ ID] Interval           Transfer     Bitrate         Retr  Cwnd[  5]   0.00-1.00   sec   646 KBytes  5.29 Mbits/sec   29   16.3 KBytes       [  5]   1.00-2.00   sec   125 KBytes  1.02 Mbits/sec    0   19.0 KBytes       [  5]   2.00-3.00   sec   250 KBytes  2.05 Mbits/sec    0   16.3 KBytes       [  5]   3.00-4.00   sec   125 KBytes  1.02 Mbits/sec   37   16.3 KBytes       [  5]   4.00-5.00   sec   250 KBytes  2.05 Mbits/sec    5   16.3 KBytes       [  5]   5.00-6.00   sec   125 KBytes  1.02 Mbits/sec   15   10.9 KBytes       [  5]   6.00-7.00   sec   125 KBytes  1.02 Mbits/sec    2   16.3 KBytes       [  5]   7.00-8.00   sec   250 KBytes  2.05 Mbits/sec    0   16.3 KBytes       [  5]   8.00-9.00   sec   125 KBytes  1.02 Mbits/sec   19   16.3 KBytes       [  5]   9.00-10.00  sec   125 KBytes  1.02 Mbits/sec    0   16.3 KBytes       - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval           Transfer     Bitrate         Retr[  5]   0.00-10.00  sec  2.09 MBytes  1.76 Mbits/sec  107             sender[  5]   0.00-10.00  sec  1.94 MBytes  1.63 Mbits/sec                  receiver

librespeed-cli --local-json speed.json --server 7 --duration 5 --no-download

Using local JSON server list: speed.jsonSelected server: 7You're testing from: xxx - Ping: 10.27 ms  Jitter: 0.47 msDownload test is disabledUpload rate:    117.31 Mbps