Date: Fri, 29 Jan 2010 21:08:14 +0100 From: Jens Schweikhardt <schweikh@schweikhardt.net> To: questions@freebsd.org Subject: Printing via ulpt0 extremely slow Message-ID: <20100129200814.GA1919@schweikhardt.net>
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hello, world\n I have a system with a handful of kernels I chose from with grub. Recently compiled 8-STABLE systems show strange printing behaviour. While a one year old 8.0-CURRENT #0 r185532 has no problem printing to my HP Laserjet 2300d (via cups and USB/ulpt0), newer systems and even 9-CURRENT print extremely slow, on the order of 1 page every 6 minutes. The printer's "Data" LED blinks sometimes erratically, sometimes is on for a few seconds, with intermittent periods of 1Hz blinking (which is the expected normal behavior). So I'm wondering what causes this oddity. I've ruled out an issue with hald/dbus which recent systems use for xorg 7.4, by turning them off, rebooting and printing from the console--same slow printing. The cups log says it sent the file succesfully (/var/log/cups/access_log): localhost - - [29/Jan/2010:20:17:11 +0100] "POST /printers/LaserJet_2300d HTTP/1.1" 200 18530 Send-Document successful-ok I can't find anything obvious in my kernel config that might account for this behavior. It does not matter if the printer is on or off when the system starts. I've read about interrupt storms (when printing via lpt0), but vmstat -i looks sane AFAICT: $ vmstat -i interrupt total rate irq16: vgapci0 ahc* 192947 62 irq18: skc0 uhci2++ 3765 1 irq19: fwohci0++ 383725 124 irq23: uhci3 ehci1 3700 1 cpu0: timer 6227448 2018 irq256: hdac0 92 0 cpu1: timer 6219346 2015 Total 13031023 4223 Anyone seen something similar? What else can I try to debug this problem? Regards, Jens -- Jens Schweikhardt http://www.schweikhardt.net/ SIGSIG -- signature too long (core dumped)
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