On Wed, Aug 24, 2011 at 1:25 AM, pradeep <psuriset@xxxxxxxxxxxxxxxxxx> wrote: > On Wed, 24 Aug 2011 01:05:13 -0300 > Lucas Meneghel Rodrigues <lmr@xxxxxxxxxx> wrote: > >> Tests the ability of adding virtual cpus on the fly to qemu using >> the monitor command cpu_set, then after everything is OK, run the >> cpu_hotplug testsuite on the guest through autotest. >> >> Updates: As of the latest qemu-kvm (08-24-2011) HEAD, trying to >> online more CPUs than the ones already available leads to qemu >> hanging: >> >> File /home/lmr/Code/autotest-git/client/virt/kvm_monitor.py, line >> 279, in cmd raise MonitorProtocolError(msg) >> MonitorProtocolError: Could not find (qemu) prompt after command >> cpu_set 2 online. Output so far: "" >> >> Signed-off-by: Lucas Meneghel Rodrigues <lmr@xxxxxxxxxx> >> --- >> client/tests/kvm/tests/cpu_hotplug.py | 99 >> ++++++++++++++++++++++++++++++++ >> client/tests/kvm/tests_base.cfg.sample | 7 ++ 2 files changed, 106 >> insertions(+), 0 deletions(-) create mode 100644 >> client/tests/kvm/tests/cpu_hotplug.py >> >> diff --git a/client/tests/kvm/tests/cpu_hotplug.py >> b/client/tests/kvm/tests/cpu_hotplug.py new file mode 100644 >> index 0000000..fa75c9b >> --- /dev/null >> +++ b/client/tests/kvm/tests/cpu_hotplug.py >> @@ -0,0 +1,99 @@ >> +import os, logging, re >> +from autotest_lib.client.common_lib import error >> +from autotest_lib.client.virt import virt_test_utils >> + >> + >> +@error.context_aware >> +def run_cpu_hotplug(test, params, env): >> + """ >> + Runs CPU hotplug test: >> + >> + 1) Pick up a living guest >> + 2) Send the monitor command cpu_set [cpu id] for each cpu we >> wish to have >> + 3) Verify if guest has the additional CPUs showing up under >> + /sys/devices/system/cpu >> + 4) Try to bring them online by writing 1 to the 'online' file >> inside that dir >> + 5) Run the CPU Hotplug test suite shipped with autotest inside > > It looks good to me. How about adding > 1) off-lining of vcpu. > 2) Frequent offline-online of vcpus. some thing like below. > > #!/bin/sh > > SYS_CPU_DIR=/sys/devices/system/cpu > > VICTIM_IRQ=15 > IRQ_MASK=f0 > > iteration=0 > while true; do > echo $iteration > echo $IRQ_MASK > /proc/irq/$VICTIM_IRQ/smp_affinity > for cpudir in $SYS_CPU_DIR/cpu[1-9]; do > echo 0 > $cpudir/online > done > for cpudir in $SYS_CPU_DIR/cpu[1-9]; do > echo 1 > $cpudir/online > done > iteration=`expr $iteration + 1` > done > Implemented your suggestion, see: http://patchwork.test.kernel.org/patch/3613/ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
