Daniel Stenberg <dan...@haxx.se> 于2020年6月16日周二 上午5:44写道： > > On Sun, 14 Jun 2020, Hongyi Zhao via curl-users wrote: > > > On Ubuntu 20.04 > > I presume that's curl 7.68.0 ?
$ curl --version curl 7.68.0 (x86_64-pc-linux-gnu) libcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.3/openssl/zlib nghttp2/1.40.0 librtmp/2.3 Release-Date: 2020-01-08 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp Features: AsynchDNS brotli GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets > > > $ curl -L -x socks5h://127.0.0.1:10119 > > http://speedtest-ny.turnkeyinternet.net/1000mb.bin >/dev/null > > % Total % Received % Xferd Average Speed Time Time Time > > Current > > Dload Upload Total Spent Left Speed > > 46 1024M 46 475M 0 0 9.7M 0 0:01:44 0:00:48 0:00:56 > > 11.1M^C > > > > The IDM gives around 16 ~ 20 MB/s speed. > > Are these transfer speeds somewhat stable and reliable in repeated tests? > > Do the same symptoms reproduce even if you don't use a SOCKS proxy? What's the > theoretical maximum speed for you against this URL? From my dev machine in > Sweden, my curl reached 30MB/s from this URL. > > > I'm confused on the above results. Why IDM shows a higher network > > performance than curl? Are there some bottlenecks/glitches/bugs in curl's > > network transfer algorithms? > > I'm not aware of any. Reading on the IDM site, it seems very content about its > use of multiple connections and ranges to download data. Have you verified > that your test case with that actually only uses a single TCP stream? Just so > that we compare the same things. > > -- > > / daniel.haxx.se | Commercial curl support up to 24x7 is available! > | Private help, bug fixes, support, ports, new features > | https://www.wolfssl.com/contact/ -- Hongyi Zhao <hongyi.z...@gmail.com> ------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
