Date: Fri, 25 Jun 2004 16:28:28 -0400 From: Bill Moran <wmoran@potentialtech.com> To: Bill Moran <wmoran@potentialtech.com> Cc: questions@freebsd.org Subject: Re: Weird upload performance problems with proftpd [update] Message-ID: <20040625162828.3fbf0636.wmoran@potentialtech.com> In-Reply-To: <20040625155507.40b505c8.wmoran@potentialtech.com> References: <20040625155507.40b505c8.wmoran@potentialtech.com>
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Bill Moran <wmoran@potentialtech.com> wrote: > I'm having some really weird performance problems with proftpd-1.2.10 on > FreeBSD 4.10 (in a jail) that I just can't seem to figure out. > > My uplink here maxes out at about 35k/sec. If I scp to the machine in > question I get about 30k/sec (which is expected) but when I ftp, I never > get anything better than 15k/sec, and occasionally as low as 8k/sec. > > Using a server colocated at another facility, I can ftp at about 45k/sec, and > scp at about 60k/sec. > > Downloads are all as expected ... scp and ftp downloads seem to be in about > the same range, and it's a number I would expect. > > I tried running the ftp daemon that ships with FreeBSD, and it exhibited the > same performance issues. > > Most settings on this machine are at their defaults. I've tried tweaking > send/recv sizes, as well as toggling delayed_ack. None of these have > made any difference so far. Update: I get the same unexplainable performance if I run ftp outside the jail, so it doesn't appear to have anything to do with FTP running inside the jail ... it appears to be a general problem with FreeBSD's performance running as an FTP server ... which really surprises me! -- Bill Moran Potential Technologies http://www.potentialtech.com
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