I think i found the problem, at least when canola is installed. We are
shipping a version of avahi that installs a dbus config file. This
config file has a bug that sets the max_connections_per_user limit to
20. The default dbus 0.61 shipped with maemo comes with the limit set
to 128. Removing the line from avahi-dbus.conf fix the problem that we
are facing after canola installation.
But, but, even with canola not installed the bug happens sometimes, so
maybe it would be good if you guys could increase the limit to 256 on
maemo (bus/config-parser.c), as it's today on dbus cvs.
BR
Andrunko
On 2/9/07, Eero Tamminen <eero.tamminen at nokia.com> wrote:
> Hi,
>
> ext Gustavo Sverzut Barbieri wrote:
> >> >> Anyone see this before on an N800?
> >> >>
> >> >> I am getting it for Control Panel, Web, Bookmarks... etc etc...
> >> >> ahhhh!!!!!
> >> >>
> >> >> Do I need to reflash? Is there some other fix anyone can think of?
> >> >
> >> > I've found this and quite isolated the problem.
> >> >
> >> > This happens more often if you have rd-mode DISABLED, if you enable it
> >> > you'll still get this error, but it's rare.
> >>
> >> Which release you're using?
> >>
> >> My first quess would be that the device runs out of memory (because
> >> something (Canola?) is using a lot of it, maybe because it leaks) and
> >> allocations are denied to applications (by kernel) and if that happens
> >> inside anything using Glib (such as Gtk), the Glib aborts the process.
> >>
> >> How much free memory (free+buffers+cached) the device has when this
> >> starts to happen more frequently?
> >>
> >> Anyway, I don't see what in R&D mode could be affecting memory usage...
> >>
> >> Could you isolate it better?
> >>
> >>
> >> > This seems to happen if "exceeded number of DBus connections", at
> >> > least I get this error when trying to use anything (launch from xterm,
> >> > both with and without run-standalone)
> >>
> >> I've never seen this error message.
> >> Does it come from the application or the D-BUS daemon?
> >>
> >> What:
> >> cat /proc/sys/fs/file-nr
> >> tells about file descriptor usage in the whole system?
> >>
> >> And what:
> >> --------------------------------
> >> for pid in /proc/[0-9]*; do
> >> cmd=$(tr '\0' ' '<$pid/cmdline);
> >> if [ "$cmd" ]; then
> >> echo "$(ls -l $pid/fd/|wc -l) ${cmd%% *}[${pid##*/}]";
> >> fi;
> >> done|sort -n
> >> --------------------------------
> >> lists as number of file descriptors used by the processes?
> >
> > attached are the results I got when error happens. You can see that
> > file descriptors are still available.
> >
> > This is with canolla installed, but canola app itself is not running.
> > However, there is canola-conf and avahi running.
> >
> > Seems that the session bus is saturated, launching apps from xterm
> > (with and without run-standalone.sh) display:
> >
> > GLIB WARNING ** GConf - Client failed to connect to the D-BUS daemon:
> > The maximum number of active connections for UID 29999 has been reached
> > GConf Error: No D-BUS daemon running
>
> Ok, the maximum number error comes from D-BUS. UID 29999 is the "user"
> under which all the applications (and some other processes) in the
> device are run under. D-BUS seems to be keeping could of connections
> per user which in Maemo doesn't make sense, as almost everything is run
> as "user" user and almost everything uses D-BUS.
>
>
> > Any hints?
>
> Seems like something does a lot of D-BUS connections.
>
> According to the file descriptor usage, there are not that many
> connections open at that moment, so maybe D-BUS counts all connections,
> not just active ones in which case e.g. opening and closing D-BUS
> connection each time one sends a message would be really bad also
> for rest of the applications & system, not just for the performance
> of that particular process...
>
>
> As this problem seems to be Canola related and can happen also after
> Canola is uninstalled and device rebooted, does Canola muck up with
> D-BUS configuration?
>
>
> - Eero
>
> > ------------------------------------------------------------------------
> >
> > 1 init[1]
> > 3 /sbin/getty[1184]
> > 3 /usr/sbin/temp-reaper[765]
> > 4 /bin/sh[1190]
> > 4 /bin/sh[1192]
> > 4 /sbin/udhcpc[1025]
> > 4 /usr/bin/clipboard-manager[1069]
> > 4 /usr/bin/hildon-input-method[1044]
> > 4 /usr/bin/maemo_af_desktop[1021]
> > 4 /usr/bin/matchbox-window-manager[776]
> > 4 /usr/bin/osso-connectivity-ui-conndlgs[1040]
> > 4 /usr/bin/osso-xterm[1104]
> > 4 /usr/lib/galago/telepathy-feed[1056]
> > 4 /usr/libexec/galago-daemon[1052]
> > 4 /usr/sbin/dnsmasq[713]
> > 4 gnome-pty-helper[1108]
> > 4 sh[1115]
> > 4 sh[1524]
> > 5 /bin/sh[1138]
> > 5 /usr/bin/alarmd[1123]
> > 5 /usr/lib/gconf2/gconfd-2[733]
> > 5 /usr/sbin/sdpd[812]
> > 5 sh[1548]
> > 5 sh[1553]
> > 6 /usr/bin/bme-dbus-proxy[839]
> > 6 /usr/bin/mission-control[1050]
> > 6 /usr/bin/telepathy-gabble[1054]
> > 6 /usr/sbin/dsp_dld[789]
> > 6 /usr/sbin/hcid[800]
> > 6 /usr/sbin/wlancond[926]
> > 7 /usr/bin/esd[861]
> > 7 /usr/bin/obexsrv[1099]
> > 8 /sbin/mce[730]
> > 8 /sbin/udevd[435]
> > 8 /usr/bin/maemo-launcher[951]
> > 8 /usr/lib/sapwood/sapwood-server[772]
> > 8 /usr/libexec/dbus-vfs-daemon[993]
> > 8 /usr/sbin/icd[929]
> > 9 /usr/bin/bme[332]
> > 9 /usr/bin/btcond[884]
> > 9 /usr/bin/ias[1072]
> > 9 /usr/bin/osso-connectivity-ui-conndlgs[1041]
> > 9 /usr/bin/osso_hss[856]
> > 9 /usr/bin/systemui[1095]
> > 10 /usr/bin/hildon-input-method[1045]
> > 10 /usr/libexec/e-addressbook-factory[1036]
> > 10 /usr/libexec/e-addressbook-factory[1047]
> > 11 /usr/bin/canola-conf[1183]
> > 11 /usr/bin/canola-conf[1185]
> > 11 /usr/bin/osso-media-server[1082]
> > 12 avahi-daemon:[1132]
> > 13 /usr/bin/mediaplayer-engine[1165]
> > 13 /usr/bin/mediaplayer-engine[1167]
> > 13 /usr/bin/metalayer-crawler[1174]
> > 13 /usr/bin/metalayer-crawler[1175]
> > 13 /usr/bin/osso-xterm[1105]
> > 15 /usr/bin/Xomap[736]
> > 15 /usr/sbin/ke-recv[919]
> > 24 dsme[325]
> > 24 dsme[327]
> > 24 dsme[328]
> > 25 /usr/bin/maemo_af_desktop[1022]
> > 28 /usr/bin/dbus-daemon[768]
> > 45 /usr/bin/dbus-daemon[719]
> >
> >
> > ------------------------------------------------------------------------
> >
> > total used free shared buffers
> > Mem: 127252 81072 46180 0 416
> > Swap: 0 0 0
> > Total: 127252 81072 46180
> >
> >
> > ------------------------------------------------------------------------
> >
> > 1274 0 4096
> >
> >
> > ------------------------------------------------------------------------
> >
> > PID Uid VmSize Stat Command
> > 1 root 476 S init [2]
> > 2 root SWN [ksoftirqd/0]
> > 3 root SW [watchdog/0]
> > 4 root SW< [events/0]
> > 5 root SW< [khelper]
> > 6 root SW< [kthread]
> > 29 root SW< [kblockd/0]
> > 30 root SW< [kseriod]
> > 41 root SW< [OMAP McSPI/0]
> > 109 root SW [pdflush]
> > 110 root SW [pdflush]
> > 111 root SW< [kswapd0]
> > 112 root SW< [aio/0]
> > 115 root SW< [mipid_esd]
> > 245 root SW [mtdblockd]
> > 275 root SW< [kmmcd]
> > 285 root SW< [krfcommd]
> > 294 root SW [mmcqd]
> > 300 root SW [mmcqd]
> > 303 root SWN [jffs2_gcd_mtd3]
> > 325 root 552 S < dsme -d -l syslog -v 4 -p /usr/lib/dsme/libstartup.so
> > 327 root 552 S < dsme -d -l syslog -v 4 -p /usr/lib/dsme/libstartup.so
> > 328 root 552 S dsme -d -l syslog -v 4 -p /usr/lib/dsme/libstartup.so
> > 332 root 348 S /usr/bin/bme
> > 406 root SWN [jffs2_gcd_mtd4]
> > 435 root 420 S < /sbin/udevd --daemon
> > 713 nobody 636 S < /usr/sbin/dnsmasq -k -i lo -a 127.0.0.1 -z
> > 719 messageb 1428 S < /usr/bin/dbus-daemon --system
> > 730 root 1308 S < /sbin/mce
> > 733 messageb 1436 S /usr/lib/gconf2/gconfd-2
> > 736 root 4288 S < /usr/bin/Xomap -mouse tslib -nozap -dpi 96 -wr
> > 765 user 180 S < /usr/sbin/temp-reaper
> > 768 user 1248 S < /usr/bin/dbus-daemon --session
> > 772 user 2524 S < /usr/lib/sapwood/sapwood-server
> > 776 user 2932 S < /usr/bin/matchbox-window-manager -theme default -use_
> > 784 root SW< [mailbox/dsp]
> > 789 root 1128 S /usr/sbin/dsp_dld -p --disable-restart -c /lib/dsp/ds
> > 800 root 864 S < /usr/sbin/hcid -n -x
> > 812 root 552 S < /usr/sbin/sdpd -n
> > 839 root 832 S < /usr/bin/bme-dbus-proxy -N
> > 856 root 1420 S /usr/bin/osso_hss
> > 861 root 656 S < /usr/bin/esd
> > 884 root 1124 S < /usr/bin/btcond -l
> > 916 root SW< [file-storage-ga]
> > 919 root 1436 S < /usr/sbin/ke-recv
> > 926 root 1160 S < /usr/sbin/wlancond
> > 929 root 1452 S < /usr/sbin/icd
> > 951 user 1396 S < /usr/bin/maemo-launcher --daemon --send-app-died --bo
> > 993 user 1856 S /usr/libexec/dbus-vfs-daemon
> > 1021 user 328 S < /usr/bin/maemo_af_desktop
> > 1022 user 11744 S < /usr/bin/maemo_af_desktop
> > 1025 root 476 S < /sbin/udhcpc -i wlan0 -s /etc/udhcpc/udhcpc.script -f
> > 1036 user 2296 S /usr/libexec/e-addressbook-factory
> > 1040 user 332 S < /usr/bin/osso-connectivity-ui-conndlgs
> > 1041 user 4532 S < /usr/bin/osso-connectivity-ui-conndlgs
> > 1044 user 332 S < /usr/bin/hildon-input-method
> > 1045 user 7500 S < /usr/bin/hildon-input-method
> > 1047 user 2296 S /usr/libexec/e-addressbook-factory
> > 1050 user 3532 S /usr/bin/mission-control
> > 1052 user 2304 S /usr/libexec/galago-daemon
> > 1054 user 3576 S /usr/bin/telepathy-gabble
> > 1056 user 2364 S /usr/lib/galago/telepathy-feed
> > 1069 user 532 S < /usr/bin/clipboard-manager
> > 1072 root 1248 S /usr/bin/ias
> > 1082 user 3316 S < /usr/bin/osso-media-server
> > 1095 systemui 4908 S < /usr/bin/systemui
> > 1099 user 1056 S < /usr/bin/obexsrv -l
> > 1104 user 328 S /usr/bin/osso-xterm
> > 1105 user 9792 S /usr/bin/osso-xterm
> > 1108 user 584 S gnome-pty-helper
> > 1115 user 644 S sh
> > 1123 user 1832 S /usr/bin/alarmd
> > 1132 avahi 1232 S avahi-daemon: running [Nokia-N800-51.local]
> > 1138 user 508 S /bin/sh /usr/bin/canola-conf.sh
> > 1165 user 2708 S /usr/bin/mediaplayer-engine
> > 1167 user 2708 S /usr/bin/mediaplayer-engine
> > 1174 user 2748 S /usr/bin/metalayer-crawler -F
> > 1175 user 2748 S /usr/bin/metalayer-crawler -F
> > 1183 user 2400 S /usr/bin/canola-conf
> > 1184 root 496 S /sbin/getty -L ttyS0 115200 vt100
> > 1185 user 2400 S /usr/bin/canola-conf
> > 1190 root 508 S /bin/sh -e /usr/sbin/gainroot
> > 1192 root 728 S /bin/sh
> > 1524 user 672 S sh
> > 1548 root 476 S sh /media/mmc1/collect-data.sh n800_canola-installed-
> > 1551 root 580 R ps aux
>
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