Re: Long downloads, network frozen

[Evgueni Tzvetanov <attroppa%yahoo.com@localhost>]

--- Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost> wrote:
> hubert%feyrer.de@localhost wrote:
> 
> > On Wed, 5 Mar 2008, David Albert wrote:
> > > I have also noted lock-ups on a Raq2+ with 256MB
> RAM
> > > on large file transfers.
> > 
> > Can you break into ddb from the serial console and
> see where it hangs?
> 
> Or simple but exact "how-to-reproduce" sequence and
> environments
> might help.
> 
> I've tried ftp'ed a number of 512MB files from i386
> to wd disks
> on RaQ with 4.0 GENERIC and RaQ2 with -current
> kernels,
> but see no trouble.
> 
> > ddb may be "+++" or so,
> 
> Sending BREAK ( ~# on cu(1)) invokes ddb(4).
> ---
> Izumi Tsutsui
> 

I have not scp directly to or from, but inside my home
network I have used Windows, Linux and NetBSD (x64
AMD) and in all cases when I download a large file (in
particular .iso image) it is freezing during transfer.

Another thing I noticed also is that when used
extensively for large amount of internal network
traffic the speed is decreasing gradually and at some
point (maybe after days) it also freezes. In
particular I have backup sent from outside to my Qube
II (working as a router and small server at home) and
each week I transfer these backup files to another
server.

My configuration is very simple:

Internet --> Qube II (as multi-server/router) -->
Internal network (/24 segment with few machines
inside, running various OSs). Here is my simple
process list:

 PID TTY   STAT    TIME COMMAND
   0 ?     DKs  0:00.13 [swapper]
   1 ?     Is   0:00.10 init
   2 ?     DK   0:00.00 [atabus0]
   3 ?     DK   0:00.00 [atabus1]
   4 ?     DK   0:00.00 [cryptoret]
   5 ?     DK   0:00.00 [pagedaemon]
   6 ?     DK   0:29.71 [ioflush]
   7 ?     DK   0:00.04 [aiodoned]
  44 ?     DK   0:00.01 [physiod]
 191 ?     Is   0:11.49 /sbin/dhclient tlp1
 249 ?     Ss   0:00.83 /usr/sbin/syslogd -s
 311 ?     Ss   0:42.05 /usr/sbin/named
 557 ?     Ss   0:00.07 /usr/sbin/sshd
 698 ?     Is   0:00.04 /usr/sbin/paneld
 699 ?     Ss   0:02.62 /usr/libexec/postfix/master
 719 ?     I    0:00.93 qmgr -l -t unix -u
 764 ?     Is   0:01.16 /usr/sbin/cron
1204 ?     IK   0:00.00 [nfsio]
1269 ?     IK   0:00.00 [nfsio]
1360 ?     IK   0:00.00 [nfsio]
1490 ?     IK   0:00.00 [nfsio]
1612 ?     Ss   0:00.66 sshd: speedy [priv]
1897 ?     S    0:00.20 pickup -l -t fifo -u
3249 ?     S    0:00.23 sshd: speedy@ttyp0
1998 ttyp0 Ss   0:00.24 -bash
2266 ttyp0 R+   0:00.06 ps -ax
 779 tty00 Is+  0:00.08 /usr/libexec/getty std.115200
tty00

If you guys want still want me to ad some diagnostics
into an email, just let me know what do you need.



      
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