Date: Mon, 29 Apr 2019 21:22:04 +0200 (CEST) From: Wojciech Puchar <wojtek@puchar.net> To: Eugene Grosbein <eugen@grosbein.net> Cc: Wojciech Puchar <wojtek@puchar.net>, freebsd-hackers@freebsd.org Subject: Re: very low performance tcp/rsh Message-ID: <alpine.BSF.2.20.1904292111080.57162@puchar.net> In-Reply-To: <ef440d5f-c543-148a-4e68-44b0bc62b28f@grosbein.net> References: <alpine.BSF.2.20.1904292028400.48623@puchar.net> <ef440d5f-c543-148a-4e68-44b0bc62b28f@grosbein.net>
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create 32GB hole-file dd if=/dev/zero of=test bs=32k seek=1m count=0 fetch -o /dev/null over ftp (proftpd) gives 1.4GB/s proftpd consumed 100% of single core. much better. tested with FreeBSD ftpd - 1.7GB/s seems like freebsd can saturate 10Gb/s ethernet with single core (Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz) Still where is the most overhead? one memcopy to packet buffers+creating packet headers (send). reception is on separate process taking another core. still - quite good. But compared to filesystem overhead - large.
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