Package: cups-daemon Version: 2.2.1-1 Severity: important Dear Maintainer,
Recently cupsd has started to use 100% CPU most of the time. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 20471 root 20 0 109684 31140 6232 R 100.0 0.2 9:49.86 cupsd stracing the process it looks as if it's continuously polling the available printers. All my (approx 50) printers are network connected via another CUPS server (version 1.4.4) over which I have no control. cups-browsed is installed, and has BrowseRemoteProtocols dnssd cups BrowsePoll remote-cups-server-address:631 in it. All other settings are the defaults. strace output -- this scrolls almost continuously: write(6, "W [17/Oct/2016:08:32:26 +1100] C"..., 147) = 147 sendmsg(8, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1\231\0\0\0005\3\0\0\235\0\0\0\1\1o\0\35\0\0\0/org/fre"..., iov_len=176}, {iov_base="\24\0\0\0blockhouse-p1-CMYK..\0\0\0\0\4\0\0\0"..., iov_len=153}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 329 poll([{fd=8, events=POLLIN}], 1, 5000) = 1 ([{fd=8, revents=POLLIN}]) recvmsg(8, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\3\1\0015\0\0\0\30\f\0\0f\0\0\0\10\1g\0\1s\0\0\4\1s\0*\0\0\0"..., iov_len=2048}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 173 recvmsg(8, {msg_namelen=0}, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 20 connect(20, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = 0 sendto(20, "\2\0\0\0\2\0\0\0\4\0\0\0adm\0", 16, MSG_NOSIGNAL, NULL, 0) = 16 poll([{fd=20, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=20, revents=POLLIN|POLLHUP}]) read(20, "\2\0\0\0\1\0\0\0\4\0\0\0\2\0\0\0\4\0\0\0\0\0\0\0", 24) = 24 read(20, "adm\0x\0", 6) = 6 close(20) = 0 write(6, "W [17/Oct/2016:08:32:26 +1100] C"..., 147) = 147 sendmsg(8, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\0010\1\0\0006\3\0\0\235\0\0\0\1\1o\0\35\0\0\0/org/fre"..., iov_len=176}, {iov_base="\22\0\0\0cups-blockhouse-p1\0\0\4\0\0\0temp"..., iov_len=304}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 480 poll([{fd=8, events=POLLIN}], 1, 5000) = 1 ([{fd=8, revents=POLLIN}]) recvmsg(8, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\2\1\1=\0\0\0\35\f\0\0.\0\0\0\10\1g\0\1o\0\0\5\1u\0006\3\0\0"..., iov_len=2048}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 125 recvmsg(8, {msg_namelen=0}, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable) open("/etc/cups/ppd/blockhouse-p1.ppd", O_RDONLY) = 20 fcntl(20, F_GETFD) = 0 fcntl(20, F_SETFD, FD_CLOEXEC) = 0 read(20, "*PPD-Adobe: \"4.3\"\n*FormatVersion"..., 4096) = 4096 read(20, "ole): \"\"\n*KOPunch PK521+ZU606-4"..., 4096) = 4096 read(20, "unched false >> \n /KMOptions /Pr"..., 4096) = 4096 read(20, ") /KMMediaColor (None) /KMMediaW"..., 4096) = 4096 read(20, "setKMoptions get exec\"\n*End\n*Med"..., 4096) = 4096 read(20, "/FullBleed false >> /KMOptions /"..., 4096) = 4096 read(20, "deMode false /FullBleed false >>"..., 4096) = 4096 read(20, "rue >> /KMOptions /ProcSet findr"..., 4096) = 4096 read(20, "lfFold/Half-Fold: \"<< /Collate "..., 4096) = 4096 read(20, ": \"<< /Collate true >> setpaged"..., 4096) = 4096 read(20, "xec\"\n*AutoTrapping True/On: \"<<"..., 4096) = 4096 read(20, "PickOne\n*OrderDependency: 10 Any"..., 4096) = 4096 read(20, "Moptions get exec\"\n*End\n*PageReg"..., 4096) = 4096 read(20, "FullBleed false >> /KMOptions /P"..., 4096) = 4096 read(20, " /WideMode true /FullBleed true "..., 4096) = 4096 read(20, "Area 8K/8K: \"12 12 753 1093\"\n*I"..., 4096) = 4096 read(20, "ze EnvC4\n*UIConstraints: *InputS"..., 4096) = 4096 read(20, "nvChou3\n*UIConstraints: *InputSl"..., 4096) = 4096 read(20, "User4(2nd)\n*UIConstraints: *Inpu"..., 4096) = 4096 read(20, "MediaType Thick1(2nd) *Fold Half"..., 4096) = 4096 read(20, "Thick3(2nd) *Staple 1Staple(Left"..., 4096) = 4096 read(20, "ard\n*UIConstraints: *MediaType T"..., 4096) = 4096 read(20, "diaType Transparency *PageSize L"..., 4096) = 4096 read(20, "6_PostCard\n*UIConstraints: *Medi"..., 4096) = 4096 read(20, "nputSlot Tray2\n*UIConstraints: *"..., 4096) = 4096 read(20, "d) *Fold ZFold1\n*UIConstraints: "..., 4096) = 4096 read(20, "e 220mmx330mm *MediaType TAB\n*UI"..., 4096) = 4096 read(20, " *PageSize EnvISOB5 *Combination"..., 4096) = 4096 read(20, "vChou3 *Punch 4holes\n*UIConstrai"..., 4096) = 4096 read(20, "Size EnvKaku1 *Punch 2holes\n*UIC"..., 4096) = 4096 read(20, "Constraints: *PageSize Env10 *Of"..., 4096) = 4096 read(20, "ageSize A4Extra *Fold TriFold\n*U"..., 4096) = 4096 read(20, "diaType User2(2nd)\n*UIConstraint"..., 4096) = 4096 read(20, "1 *Fold Stitch\n*UIConstraints: *"..., 4096) = 4096 read(20, "raints: *Combination Booklet *Pa"..., 4096) = 4096 read(20, "Staple(Left) *Finisher None\n*UIC"..., 4096) = 4096 read(20, "aints: *Punch 2holes *PageSize E"..., 4096) = 4096 read(20, "s *MediaType Envelope\n*UIConstra"..., 4096) = 4096 read(20, "s: *Fold Stitch *PageSize EnvYou"..., 4096) = 4096 read(20, "k1(2nd)\n*UIConstraints: *Fold Tr"..., 4096) = 4096 read(20, "ype Plain(2nd)\n*UIConstraints: *"..., 4096) = 4096 read(20, "\n*UIConstraints: *Fold ZFold2 *K"..., 4096) = 4096 read(20, "Cover PITray2\n*UIConstraints: *B"..., 4096) = 4096 read(20, "*PIBackCover PITray2 *MediaType "..., 4096) = 4096 read(20, "lank *PageSize EnvYou3\n*UIConstr"..., 4096) = 4096 read(20, "erTray LCT\n*UIConstraints: *Pape"..., 4096) = 4096 read(20, "traints: *Finisher None *KOPunch"..., 4096) = 4096 read(20, "unch PK521-SWE4\n*UIConstraints: "..., 4096) = 4096 read(20, "ch PK520-SWE4 *Punch 3holes\n*UIC"..., 4096) = 4096 read(20, "ts: *SaddleUnit SD512 *Finisher "..., 4096) = 4096 read(20, "d-Oblique: Standard \"(501.010)\""..., 4096) = 4096 read(20, "Standard \"(501.009)\" ExtendedRom"..., 4096) = 1110 read(20, "", 4096) = 0 read(20, "", 4096) = 0 close(20) = 0 stat("/var/cache/cups/blockhouse-p1.data", 0x7ffde442aa30) = -1 ENOENT (No such file or directory) stat("/etc/cups/ppd/blockhouse-p1.ppd", {st_mode=S_IFREG|0640, st_size=210006, ...}) = 0 open("/etc/cups/ppd/blockhouse-p1.ppd", O_RDONLY) = 20 fcntl(20, F_GETFD) = 0 fcntl(20, F_SETFD, FD_CLOEXEC) = 0 read(20, "*PPD-Adobe: \"4.3\"\n*FormatVersion"..., 4096) = 4096 read(20, "ole): \"\"\n*KOPunch PK521+ZU606-4"..., 4096) = 4096 read(20, "unched false >> \n /KMOptions /Pr"..., 4096) = 4096 read(20, ") /KMMediaColor (None) /KMMediaW"..., 4096) = 4096 read(20, "setKMoptions get exec\"\n*End\n*Med"..., 4096) = 4096 read(20, "/FullBleed false >> /KMOptions /"..., 4096) = 4096 read(20, "deMode false /FullBleed false >>"..., 4096) = 4096 read(20, "rue >> /KMOptions /ProcSet findr"..., 4096) = 4096 read(20, "lfFold/Half-Fold: \"<< /Collate "..., 4096) = 4096 read(20, ": \"<< /Collate true >> setpaged"..., 4096) = 4096 read(20, "xec\"\n*AutoTrapping True/On: \"<<"..., 4096) = 4096 read(20, "PickOne\n*OrderDependency: 10 Any"..., 4096) = 4096 read(20, "Moptions get exec\"\n*End\n*PageReg"..., 4096) = 4096 read(20, "FullBleed false >> /KMOptions /P"..., 4096) = 4096 read(20, " /WideMode true /FullBleed true "..., 4096) = 4096 read(20, "Area 8K/8K: \"12 12 753 1093\"\n*I"..., 4096) = 4096 read(20, "ze EnvC4\n*UIConstraints: *InputS"..., 4096) = 4096 read(20, "nvChou3\n*UIConstraints: *InputSl"..., 4096) = 4096 read(20, "User4(2nd)\n*UIConstraints: *Inpu"..., 4096) = 4096 read(20, "MediaType Thick1(2nd) *Fold Half"..., 4096) = 4096 read(20, "Thick3(2nd) *Staple 1Staple(Left"..., 4096) = 4096 read(20, "ard\n*UIConstraints: *MediaType T"..., 4096) = 4096 read(20, "diaType Transparency *PageSize L"..., 4096) = 4096 read(20, "6_PostCard\n*UIConstraints: *Medi"..., 4096) = 4096 read(20, "nputSlot Tray2\n*UIConstraints: *"..., 4096) = 4096 read(20, "d) *Fold ZFold1\n*UIConstraints: "..., 4096) = 4096 read(20, "e 220mmx330mm *MediaType TAB\n*UI"..., 4096) = 4096 read(20, " *PageSize EnvISOB5 *Combination"..., 4096) = 4096 read(20, "vChou3 *Punch 4holes\n*UIConstrai"..., 4096) = 4096 read(20, "Size EnvKaku1 *Punch 2holes\n*UIC"..., 4096) = 4096 read(20, "Constraints: *PageSize Env10 *Of"..., 4096) = 4096 read(20, "ageSize A4Extra *Fold TriFold\n*U"..., 4096) = 4096 read(20, "diaType User2(2nd)\n*UIConstraint"..., 4096) = 4096 read(20, "1 *Fold Stitch\n*UIConstraints: *"..., 4096) = 4096 read(20, "raints: *Combination Booklet *Pa"..., 4096) = 4096 read(20, "Staple(Left) *Finisher None\n*UIC"..., 4096) = 4096 read(20, "aints: *Punch 2holes *PageSize E"..., 4096) = 4096 read(20, "s *MediaType Envelope\n*UIConstra"..., 4096) = 4096 read(20, "s: *Fold Stitch *PageSize EnvYou"..., 4096) = 4096 read(20, "k1(2nd)\n*UIConstraints: *Fold Tr"..., 4096) = 4096 read(20, "ype Plain(2nd)\n*UIConstraints: *"..., 4096) = 4096 read(20, "\n*UIConstraints: *Fold ZFold2 *K"..., 4096) = 4096 read(20, "Cover PITray2\n*UIConstraints: *B"..., 4096) = 4096 read(20, "*PIBackCover PITray2 *MediaType "..., 4096) = 4096 read(20, "lank *PageSize EnvYou3\n*UIConstr"..., 4096) = 4096 read(20, "erTray LCT\n*UIConstraints: *Pape"..., 4096) = 4096 read(20, "traints: *Finisher None *KOPunch"..., 4096) = 4096 read(20, "unch PK521-SWE4\n*UIConstraints: "..., 4096) = 4096 read(20, "ch PK520-SWE4 *Punch 3holes\n*UIC"..., 4096) = 4096 read(20, "ts: *SaddleUnit SD512 *Finisher "..., 4096) = 4096 read(20, "d-Oblique: Standard \"(501.010)\""..., 4096) = 4096 read(20, "Standard \"(501.009)\" ExtendedRom"..., 4096) = 1110 read(20, "", 4096) = 0 read(20, "", 4096) = 0 close(20) -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (990, 'unstable'), (500, 'testing'), (500, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386, armhf, armel, arm64 Kernel: Linux 4.8.0+ (SMP w/8 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Init: systemd (via /run/systemd/system) Versions of packages cups-daemon depends on: ii adduser 3.115 ii bc 1.06.95-9+b1 ii dpkg 1.18.10 ii init-system-helpers 1.45 ii libavahi-client3 0.6.32-1 ii libavahi-common3 0.6.32-1 ii libc6 2.24-3 ii libcups2 2.2.1-1 ii libcupsmime1 2.2.1-1 ii libdbus-1-3 1.10.12-1 ii libgssapi-krb5-2 1.14.3+dfsg-2 ii libpam0g 1.1.8-3.3 ii libpaper1 1.1.24+nmu4 ii libsystemd0 231-9 ii lsb-base 9.20160629 ii procps 2:3.3.12-2 ii ssl-cert 1.0.38 Versions of packages cups-daemon recommends: ii avahi-daemon 0.6.32-1 ii colord 1.3.3-2 ii cups-browsed 1.11.4-1 Versions of packages cups-daemon suggests: ii cups 2.2.1-1 ii cups-bsd 2.2.1-1 ii cups-client 2.2.1-1 ii cups-common 2.2.1-1 ii cups-filters [foomatic-filters] 1.11.4-1 pn cups-pdf <none> ii cups-ppdc 2.2.1-1 ii cups-server-common 2.2.1-1 ii foomatic-db 20161005-1 ii ghostscript 9.19~dfsg-3 pn hplip <none> ii poppler-utils 0.44.0-3 ii printer-driver-gutenprint 5.2.11-1+b1 pn printer-driver-hpcups <none> pn smbclient <none> ii udev 231-9 -- no debconf information