diff options
Diffstat (limited to 'results/classifier/108/debug/1866962')
| -rw-r--r-- | results/classifier/108/debug/1866962 | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/results/classifier/108/debug/1866962 b/results/classifier/108/debug/1866962 deleted file mode 100644 index ec29a3f6..00000000 --- a/results/classifier/108/debug/1866962 +++ /dev/null @@ -1,190 +0,0 @@ -debug: 0.931 -other: 0.921 -performance: 0.917 -semantic: 0.914 -graphic: 0.910 -boot: 0.867 -vnc: 0.867 -PID: 0.863 -device: 0.859 -permissions: 0.858 -KVM: 0.854 -files: 0.788 -socket: 0.786 -network: 0.776 - -[Regression]Powerpc kvm guest unable to start with hugepage backed memory - -Current upstream qemu master does not boot a powerpc kvm guest backed by hugepage. - -HW: Power9 (DD2.3) -Host Kernel: 5.6.0-rc5 -Guest Kernel: 5.6.0-rc5 -Qemu: ba29883206d92a29ad5a466e679ccfc2ee6132ef - -Steps to reproduce: -1. Allocate enough hugepage to boot a KVM guest -# cat /proc/meminfo |grep ^HugePages -HugePages_Total: 5000 -HugePages_Free: 5000 -HugePages_Rsvd: 0 -HugePages_Surp: 0 - -2. Define and boot a guest -/usr/bin/virt-install --connect=qemu:///system --hvm --accelerate --name 'vm1' --machine pseries --memory=8192,hugepages=yes --vcpu=8,maxvcpus=8,sockets=1,cores=8,threads=1 --import --nographics --serial pty --memballoon model=virtio --controller type=scsi,model=virtio-scsi --disk path=/home/kvmci/tests/data/avocado-vt/images/f31-ppc64le.qcow2,bus=scsi,size=10,format=qcow2 --network=bridge=virbr0,model=virtio,mac=52:54:00:5f:82:83 --mac=52:54:00:5f:82:83 --boot emulator=/home/sath/qemu/ppc64-softmmu/qemu-system-ppc64,kernel=/home/kvmci/linux/vmlinux,kernel_args="root=/dev/sda5 rw console=tty0 console=ttyS0,115200 init=/sbin/init initcall_debug selinux=0" --noautoconsole - -Starting install... -ERROR internal error: qemu unexpectedly closed the monitor: qemu-system-ppc64: util/qemu-thread-posix.c:76: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed. -qemu-system-ppc64: util/qemu-thread-posix.c:76: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed. - - -----------NOK - - -Bisected the issue to below commit. - -037fb5eb3941c80a2b7c36a843e47207ddb004d4 is the first bad commit -commit 037fb5eb3941c80a2b7c36a843e47207ddb004d4 -Author: bauerchen <email address hidden> -Date: Tue Feb 11 17:10:35 2020 +0800 - - mem-prealloc: optimize large guest startup - - [desc]: - Large memory VM starts slowly when using -mem-prealloc, and - there are some areas to optimize in current method; - - 1、mmap will be used to alloc threads stack during create page - clearing threads, and it will attempt mm->mmap_sem for write - lock, but clearing threads have hold read lock, this competition - will cause threads createion very slow; - - 2、methods of calcuating pages for per threads is not well;if we use - 64 threads to split 160 hugepage,63 threads clear 2page,1 thread - clear 34 page,so the entire speed is very slow; - - to solve the first problem,we add a mutex in thread function,and - start all threads when all threads finished createion; - and the second problem, we spread remainder to other threads,in - situation that 160 hugepage and 64 threads, there are 32 threads - clear 3 pages,and 32 threads clear 2 pages. - - [test]: - 320G 84c VM start time can be reduced to 10s - 680G 84c VM start time can be reduced to 18s - - Signed-off-by: bauerchen <email address hidden> - Reviewed-by: Pan Rui <email address hidden> - Reviewed-by: Ivan Ren <email address hidden> - [Simplify computation of the number of pages per thread. - Paolo] - Signed-off-by: Paolo Bonzini <email address hidden> - - util/oslib-posix.c | 32 ++++++++++++++++++++++++-------- - 1 file changed, 24 insertions(+), 8 deletions(-) - - - -bisect log: - -# git bisect log -git bisect start -# good: [52901abf94477b400cf88c1f70bb305e690ba2de] Update version for v4.2.0-rc5 release -git bisect good 52901abf94477b400cf88c1f70bb305e690ba2de -# bad: [ba29883206d92a29ad5a466e679ccfc2ee6132ef] Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20200310' into staging -git bisect bad ba29883206d92a29ad5a466e679ccfc2ee6132ef -# good: [d1ebbc9d16297b54b153ee33abe05eb4f1df0c66] target/arm/kvm: trivial: Clean up header documentation -git bisect good d1ebbc9d16297b54b153ee33abe05eb4f1df0c66 -# good: [87b74e8b6edd287ea2160caa0ebea725fa8f1ca1] target/arm: Vectorize USHL and SSHL -git bisect good 87b74e8b6edd287ea2160caa0ebea725fa8f1ca1 -# bad: [e0175b71638cf4398903c0d25f93fe62e0606389] Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20200228' into staging -git bisect bad e0175b71638cf4398903c0d25f93fe62e0606389 -# bad: [ca6155c0f2bd39b4b4162533be401c98bd960820] Merge tag '<email address hidden>' of https://github.com/patchew-project/qemu into HEAD -git bisect bad ca6155c0f2bd39b4b4162533be401c98bd960820 -# good: [ab74e543112957696f7c79b0c33ecebd18b52af5] ppc/spapr: use memdev for RAM -git bisect good ab74e543112957696f7c79b0c33ecebd18b52af5 -# good: [cb06fdad05f3e546a4e20f1f3c0127f9ae53de1a] fuzz: support for fork-based fuzzing. -git bisect good cb06fdad05f3e546a4e20f1f3c0127f9ae53de1a -# bad: [037fb5eb3941c80a2b7c36a843e47207ddb004d4] mem-prealloc: optimize large guest startup -git bisect bad 037fb5eb3941c80a2b7c36a843e47207ddb004d4 -# good: [88e2b97aa3e369a454c9d8360afddc348070c708] Merge remote-tracking branch 'remotes/dgilbert-gitlab/tags/pull-virtiofs-20200221' into staging -git bisect good 88e2b97aa3e369a454c9d8360afddc348070c708 -# good: [b1db8c63169f2139af9f26c884e5e2abd27dd290] fuzz: add virtio-net fuzz target -git bisect good b1db8c63169f2139af9f26c884e5e2abd27dd290 -# good: [e5c59355ae9f724777c61c859292ec9db2c8c2ab] fuzz: add documentation to docs/devel/ -git bisect good e5c59355ae9f724777c61c859292ec9db2c8c2ab -# good: [920d557e5ae58671d335acbcfba3f9a97a02911c] memory: batch allocate ioeventfds[] in address_space_update_ioeventfds() -git bisect good 920d557e5ae58671d335acbcfba3f9a97a02911c -# first bad commit: [037fb5eb3941c80a2b7c36a843e47207ddb004d4] mem-prealloc: optimize large guest startup - - - - -Qemu cmdline: -``` -/home/sath/qemu/ppc64-softmmu/qemu-system-ppc64 \ --name guest=vm1,debug-threads=on \ --S \ --object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-9-vm1/master-key.aes \ --machine pseries-5.0,accel=kvm,usb=off,dump-guest-core=off \ --m 8192 \ --mem-prealloc \ --mem-path /dev/hugepages/libvirt/qemu/9-vm1 \ --overcommit mem-lock=off \ --smp 8,sockets=1,cores=8,threads=1 \ --uuid e5875dd8-0d1c-422f-ae46-9a0b88919902 \ --display none \ --no-user-config \ --nodefaults \ --chardev socket,id=charmonitor,fd=36,server,nowait \ --mon chardev=charmonitor,id=monitor,mode=control \ --rtc base=utc \ --no-shutdown \ --boot strict=on \ --kernel /home/kvmci/linux/vmlinux \ --append 'root=/dev/sda5 rw console=tty0 console=ttyS0,115200 init=/sbin/init initcall_debug selinux=0' \ --device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.0,addr=0x3 \ --device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 \ --device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 \ --drive file=/home/kvmci/tests/data/avocado-vt/images/f31-ppc64le.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0 \ --device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 \ --netdev tap,fd=38,id=hostnet0,vhost=on,vhostfd=39 \ --device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:5f:82:83,bus=pci.0,addr=0x1 \ --chardev pty,id=charserial0 \ --device spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 \ --chardev socket,id=charchannel0,fd=40,server,nowait \ --device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \ --device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 \ --msg timestamp=on -2020-03-11 08:11:46.639+0000: 494632: info : libvirt version: 5.6.0, package: 5.fc31 (Fedora Project, 2019-11-11-20:24:40, ) -2020-03-11 08:11:46.639+0000: 494632: info : hostname: ltcmihawk50.aus.stglabs.ibm.com -2020-03-11 08:11:46.639+0000: 494632: info : virObjectUnref:349 : OBJECT_UNREF: obj=0x7fff3c0f6fb0 -char device redirected to /dev/pts/2 (label charserial0) -qemu-system-ppc64: util/qemu-thread-posix.c:76: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed. -qemu-system-ppc64: util/qemu-thread-posix.c:76: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed. -2020-03-11 08:11:47.195+0000: shutting down, reason=failed -``` - -Any updates? - -This issue seems to be fixed by - -commit 78b3f67acdf0f646d35ebdf98b9e91fb04ab9a07 -Author: Paolo Bonzini <email address hidden> -Date: Tue Mar 10 18:58:30 2020 +0100 - -oslib-posix: initialize mutex and condition variable - -The mutex and condition variable were never initialized, causing --mem-prealloc to abort with an assertion failure. - -Fixes: 037fb5eb3941c80a2b7c36a843e47207ddb004d4 -Reported-by: Marc Hartmayer <email address hidden> -Cc: bauerchen <email address hidden> -Signed-off-by: Paolo Bonzini <email address hidden> - -Thanks! Murilo, am able to boot with current master, tested with(commit 53ef8a92eb04ee19640f5aad3bff36cd4a36c250). - -Regards, --Satheesh - -Thank you for verifying, Satheesh. - |