Re: bin/56129 (ftp(1) should keep control session during large xfer)

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

The following reply was made to PR bin/56129; it has been noted by GNATS.

From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: lukem%netbsd.org@localhost, tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: bin/56129 (ftp(1) should keep control session during large xfer)
Date: Sun, 13 Jun 2021 12:15:36 +0900

 > Izumi; is it possible to provide more details of the remote server
 > host/path or URI ?
 
 1)
 https://pbs.twimg.com/media/E3tCjW2VgAMfjhQ.jpg
 This one is a patched install RAMDISK with 20210603 ftp fetching
  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-9.2/x68k/base.tgz
 on X68030
  https://dmesgd.nycbug.org/index.cgi?do=view&id=6124
 
 2)
 https://pbs.twimg.com/media/E3uspBhUYAIFURZ.jpg
 This one is a patched /usr/bin/ftp 20210603 against NetBSD 9.2 fetching
  ftp://ftp7.jp.netbsd.org/pub/NetBSD/NetBSD-9.2/x68k/base.tgz
 on the same X68030
 
 3)
 https://pbs.twimg.com/media/E2nuME0UUAAkeo1.jpg
 This one is a plain NetBSD/luna68k 9.2 install RAMDISK fetching
  ftp://ftp6.jp.netbsd.org/pub/NetBSD/NetBSD-9.2/luna68k/comp.tgz
 on LUNA
  https://dmesgd.nycbug.org/index.cgi?do=view&id=6115
 
 4)
 https://pbs.twimg.com/media/E3uicvFUUAYQ85j.jpg
 This one is stock /usr/bin/ftp in NetBSD/hp300 9.1 fetching
  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-9.2/hp300/binary/sets/base.tgz
 on HP9000/425t
  https://dmesgd.nycbug.org/index.cgi?do=view&id=6114
 
 > Can you reproduce this with the same download on a "faster" machine
 > to the same server?
 
 On Panasonic CF-NX3 (Core(TM) i3-4010U CPU @ 1.70GHz) and
 stock NetBSD/amd64 9.2 with "ifconfig wm0 media 10baseT settings:
  https://dmesgd.nycbug.org/index.cgi?do=view&id=6123
 fetching ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-9.2/i386/binary/sets/debug.tgz
 doesn't fail:
  https://pbs.twimg.com/media/E3ujd-nVUAEp464.jpg
 
 > (Or is the 64 KiB/s transfer rate an artifact of the existing
 > machine being slow, rather than the network connection?)
 
 - 10baseT wm(4) + ahcisata(4) + modern(?) Core-i3 (2C4T) gets
   ~250KiB/s (ftp.netbsd.org)
   -> no control session timeout
 - 10baseT le(4) + slow spc(4) SCSI + 68030 or 68040 get
   64KiB/s (ftp.netbsd.org) or 125KiB/s (ftp6.jp.netbsd.org)
   -> control session timeout (as above)
 
 ---
 
 Some threshold around 200KiB/s, or depends on CPU load?
 
 ---
 Izumi Tsutsui