[cups.bugs] Unable to reserve port: Resource temporarily unavailable

[Jeff Chua]

On Mon, Jun 29, 2009 at 12:12 AM, Michael Sweet<msweet at apple.com> wrote:
> On Jun 28, 2009, at 2:40 AM, Jeff Chua wrote:
>
> " Unable to reserve port: Resource temporarily unavailable" ... this
> came CUPS trying to print 2000 jobs, which printer1 is just local
> network printer printing to localhost (127.0.0.1).
> where are you seeing this error?

# cat /usr/adm/cups/error_log
I [28/Jun/2009:17:32:08 +0800] [Job 161927307] Adding start banner page "none".
I [28/Jun/2009:17:32:08 +0800] [Job 161927307] Queued on "file" by "root".
I [28/Jun/2009:17:32:08 +0800] [Job 161927307] File of type text/plain
queued by "root".
I [28/Jun/2009:17:32:08 +0800] [Job 161927307] Adding end banner page "none".
I [28/Jun/2009:17:32:08 +0800] [Job 161927307] Started filter
/etc/cups/interfaces/file (PID 347)
E [28/Jun/2009:17:32:08 +0800] [Job 161924484] Unable to reserve port:
Resource temporarily unavailable
I [28/Jun/2009:17:32:08 +0800] [Job 161927307] Completed successfully.


> The CUPS lpr command will never try to reserve a port, and with 1 printer
> you should never see the CUPS lpd backend produce it, either. FWIW,
> port reservation tries to


I just send 2000 jobs to the local printer as in ...

# for((i = 0; i < 2000; i++))
# do
# date | lpr -Plp
# done


# lpstat -t
device for lp: lpd://lp/file

# lp has IP 127.0.01

# filter for "lp" is just a "cat" command

# "netstat -an" shows many of ...
tcp        0      0 0.0.0.0:512             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:513             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:514             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:515             0.0.0.0:*               LISTEN

Full log attached.


# /etc/xinetd.conf
service printer
{
        flags           = NODELAY KEEPALIVE
        socket_type     = stream
        protocol        = tcp
        wait            = no
        user            = lp
        server          = /usr/lib/cups/daemon/cups-lpd
        server_args     = -o document-format=application/octet-stream
        instances       = 90000
        cps             = 90000 1
}
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