While installing packages on an arm64 virtual machine with 6 proc 24GB RAM today, it got stuck installing packages root 9299 0.0 0.0 5996 3984 pts/1 Ss+ 09:24 0:01 | \_ /usr/bin/dpkg --status-fd 23 --configure libexpat1:arm64 libgcrypt11:arm64 libtasn1-6:arm64 libgnutls26:arm64 libgnutls-openssl27:arm64 libmagic1:arm64 file:arm64 libssl1.0.0:arm64 libpython3.4-minimal:arm64 python3.4-minimal:arm64 libpython3.4-stdlib:arm64 python3.4:arm64 libudev1:arm64 udev:arm64 bash-completion:all libasprintf0c2:arm64 libkrb5support0:arm64 libk5crypto3:arm64 libkrb5-3:arm64 libgssapi-krb5-2:arm64 libldap-2.4-2:arm64 libcurl3-gnutls:arm64 libsystemd-daemon0:arm64 libapparmor1:arm64 libsystemd-login0:arm64 dbus:arm64 systemd-shim:arm64 systemd-services:arm64 libpam-systemd:arm64 libparted0debian1:arm64 libpipeline1:arm64 libpolkit-gobject-1-0:arm64 libusb-1.0-0:arm64 libxml2:arm64 bsdmainutils:arm64 man-db:arm64 ntfs-3g:arm64 libaio1:arm64 liblzo2-2:arm64 libnettle4:arm64 libarchive13:arm64 libasound2-data:all libasound2:arm64 libasyncns0:arm64 libatasmart4:arm64 libatk1.0- d ata:all libatk1.0-0:arm64 libatspi2.0-0:arm64 libatk-bridge2.0-0:arm64 libgtk2.0-common:all fonts-dejavu-core:all fontconfig-config:all libfreetype6:arm64 libfontconfig1:arm64 libpixman-1-0:arm64 libxcb-render0:arm64 libxcb-shm0:arm64 libxrender1:arm64 libcairo2:arm64 libavahi-common-data:arm64 libavahi-common3:arm64 libavahi-client3:arm64 libcups2:arm64 libjpeg-turbo8:arm64 libjpeg8:arm64 libjasper1:arm64 libjbig0:arm64 libtiff5:arm64 libgdk-pixbuf2.0-common:all libgdk-pixbuf2.0-0:arm64 libthai-data:all libdatrie1:arm64 libthai0:arm64 fontconfig:arm64 libpango-1.0-0:arm64 libgraphite2-3:arm64 libharfbuzz0b:arm64 libpangoft2-1.0-0:arm64 libpangocairo-1.0-0:arm64 libxcomposite1:arm64 libxfixes3:arm64 libxcursor1:arm64 libxdamage1:arm64 libxi6:arm64 libxinerama1:arm64 libxrandr2:arm64 libgtk2.0-0:arm64 libnspr4:arm64 libnss3-nssdb:all libnss3:arm64 tzdata-java:all java-common:all liblcms2-2:arm64 libpcsclite1:arm64 libogg0:arm64 libflac8:arm64 libvorbis0a:arm64 libvorbisenc2:arm64 libs n dfile1:arm64 libpulse0:arm64 libsctp1:arm64 ca-certificates-java:all openjdk-7-jre-headless:arm64 default-jre-headless:arm64 libgif4:arm64 x11-common:all libxtst6:arm64 libglapi-mesa:arm64 libx11-xcb1:arm64 libxcb-dri2-0:arm64 libxcb-dri3-0:arm64 libxcb-glx0:arm64 libxcb-present0:arm64 libxcb-sync1:arm64 libxshmfence1:arm64 libxxf86vm1:arm64 libgl1-mesa-glx:arm64 libatk-wrapper-java:all libatk-wrapper-java-jni:arm64 openjdk-7-jre:arm64 default-jre:arm64 libavahi-glib1:arm64 libbonobo2-common:all libidl-common:all libidl0:arm64 liborbit-2-0:arm64 liborbit2:arm64 libbonobo2-0:arm64 libboost-atomic1.54.0:arm64 libboost-system1.54.0:arm64 libboost-chrono1.54.0:arm64 libboost-date-time1.54.0:arm64 libboost-iostreams1.54.0:arm64 libboost-program-options1.54.0:arm64 libboost-random1.54.0:arm64 libicu52:arm64 libboost-regex1.54.0:arm64 libboost-serialization1.54.0:arm64 libboost-thread1.54.0:arm64 libcairo-gobject2:arm64 libltdl7:arm64 libtdb1:arm64 libvorbisfile3:arm64 sound-theme-freedesktop:all libcanberra0:arm64 libcolord1:arm64 libcroco3:arm64 libcurl3:arm64 libdconf1:arm64 libdrm-nouveau2:arm64 libdrm-radeon1:arm64 libexif12:arm64 libfontenc1:arm64 gconf2-common:all libgconf-2-4:arm64 libvpx1:arm64 libxpm4:arm64 libgd3:arm64 libunistring0:arm64 libgettextpo0:arm64 libgl1-mesa-dri:arm64 gconf-service-backend:arm64 gconf-service:arm64 psmisc:arm64 dbus-x11:arm64 gconf2:arm64 libgnomevfs2-common:arm64 libgnomevfs2-0:arm64 libgnome2-common:all libgnome2-bin:arm64 libgnome2-0:arm64 libgphoto2-port10:arm64 libgphoto2-6:arm64 libgssrpc4:arm64 dconf-service:arm64 dconf-gsettings-backend:arm64 libgtk-3-common:all libwayland-client0:arm64 libwayland-cursor0:arm64 libxkbcommon0:arm64 libgtk-3-0:arm64 libgudev-1.0-0:arm64 libice6:arm64 libieee1284-3:arm64 libkadm5clnt-mit9:arm64 libkdb5-7:arm64 libkadm5srv-mit9:arm64 libsnappy1:arm64 libleveldb1:arm64 libpaper1:arm64 libpcrecpp0:arm64 libpolkit-agent-1-0:arm64 libpolkit-backend-1-0:arm64 libpython2.7-mini m al:arm64 python2.7-minimal:arm64 libpython2.7-stdlib:arm64 python2.7:arm64 libpython2.7:arm64 libexpat1-dev:arm64 libpython2.7-dev:arm64 libpython3.4:arm64 libreadline5:arm64 acl:arm64 libsane-common:arm64 libv4lcon root 659 0.0 0.0 4680 1548 pts/1 S+ 09:27 0:00 | \_ /bin/bash /var/lib/dpkg/info/ca-certificates-java.postinst configure root 692 0.0 0.1 7712980 40988 pts/1 Sl+ 09:27 0:01 | \_ java -jar /usr/share/ca-certificates-java/ca-certificates-java.jar -storepass changeit waited 45 minutes, no progress. $ sudo strace -p 692 Process 692 attached futex(0x7f849f12c0, FUTEX_WAIT, 705, NULL^CProcess 692 detached <detached ...> CPU / disk / network otherwise idle. Another clue :-) On 03/04/2016 23:30, Loic Dachary wrote: > While compiling with 6 proc > > $ cat /proc/cpuinfo > Processor : AArch64 Processor rev 1 (aarch64) > processor : 0 > processor : 1 > processor : 2 > processor : 3 > processor : 4 > processor : 5 > Features : fp asimd evtstrm > CPU implementer : 0x50 > CPU architecture: AArch64 > CPU variant : 0x0 > CPU part : 0x000 > CPU revision : 1 > > Hardware : linux,dummy-virt > > I noticed via htop that only 5 of them are in use during make -j6. Processor 4 is not used. I'm not sure how / if that can be repeated. > > On 03/04/2016 23:18, Loic Dachary wrote: >> Hi Martin, >> >> In your quest to understand why the arm64 qemu sometimes hangs when using as many processors as the host, maybe this will help. >> >> Today while watching an installation on an arm64 qemu machine, I noticed it was stuck in setting up fontconfig. So I logged in the machine, CPU was not busy, no IOwait either, a lot of free RAM. The host was also mostly idle. I straced the process and saw it moving. Unfortunately ( or maybe I was the cause of things starting to move on again ?) the font regeneration finished while I was observing and things seem to be going at a normal speed now. >> >> Note that there is almost a 2 hours gap between Setting up fontconfig and Regenerating fonts cache. >> >> Maybe the pattern we're sometime seeing (i.e. all blocked, not even possible to ssh) is another case of the same issue ? >> >> I'm starting to think we should bring this discussion to some arm64 mailing list or IRC channel but I don't know any. >> >> 2016-04-03 19:17:34,858.858 DEBUG:teuthology.misc:Setting up libgdk-pixbuf2.0-0:arm64 (2.30.7-0ubuntu1.2) ... >> 2016-04-03 19:17:35,057.057 DEBUG:teuthology.misc:Setting up libthai-data (0.1.20-3) ... >> 2016-04-03 19:17:35,183.183 DEBUG:teuthology.misc:Setting up libdatrie1:arm64 (0.2.8-1) ... >> 2016-04-03 19:17:35,350.350 DEBUG:teuthology.misc:Setting up libthai0:arm64 (0.1.20-3) ... >> 2016-04-03 19:17:35,546.546 DEBUG:teuthology.misc:Setting up fontconfig (2.11.0-0ubuntu4.1) ... >> 2016-04-03 21:09:52,094.094 DEBUG:teuthology.misc:Regenerating fonts cache... done. >> 2016-04-03 21:09:52,136.136 DEBUG:teuthology.misc:Setting up libpango-1.0-0:arm64 (1.36.3-1ubuntu1.1) ... >> 2016-04-03 21:09:52,303.303 DEBUG:teuthology.misc:Setting up libgraphite2-3:arm64 (1.3.6-1ubuntu0.14.04.1) ... >> 2016-04-03 21:09:52,465.465 DEBUG:teuthology.misc:Setting up libharfbuzz0b:arm64 (0.9.27-1ubuntu1) ... >> 2016-04-03 21:09:52,641.641 DEBUG:teuthology.misc:Setting up libpangoft2-1.0-0:arm64 (1.36.3-1ubuntu1.1) ... >> 2016-04-03 21:09:52,806.806 DEBUG:teuthology.misc:Setting up libpangocairo-1.0-0:arm64 (1.36.3-1ubuntu1.1) ... >> 2016-04-03 21:09:52,971.971 DEBUG:teuthology.misc:Setting up libxcomposite1:arm64 (1:0.4.4-1) ... >> >> Cheers >> > -- Loïc Dachary, Artisan Logiciel Libre -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
