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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [xen-unstable bisection] complete test-amd64-amd64-qemuu-nested-intel
branch xen-unstable xenbranch xen-unstable job test-amd64-amd64-qemuu-nested-intel testid debian-hvm-install/l1/l2 Tree: linux git://xenbits.xen.org/linux-pvops.git Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git Tree: qemuu git://xenbits.xen.org/qemu-xen.git Tree: xen git://xenbits.xen.org/xen.git *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: b1710040ca9628a6517bfc06f87dcbb670f8743e Bug not present: 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/145120/ commit b1710040ca9628a6517bfc06f87dcbb670f8743e Author: Roger Pau Monné <roger.pau@xxxxxxxxxx> Date: Fri Dec 20 16:29:22 2019 +0100 x86/apic: allow enabling x2APIC mode regardless of interrupt remapping x2APIC mode doesn't mandate interrupt remapping, and hence can be enabled independently. This patch enables x2APIC when available, regardless of whether there's interrupt remapping support. This is beneficial specially when running on virtualized environments, since it reduces the amount of vmexits. For example when sending an IPI in xAPIC mode Xen performs at least 3 different accesses to the APIC MMIO region, while when using x2APIC mode a single wrmsr is used. The following numbers are from a lock profiling of a Xen PV shim running a Linux PV kernel with 32 vCPUs and xAPIC mode: (XEN) Global lock flush_lock: addr=ffff82d0804af1c0, lockval=03190319, not locked (XEN) lock:656153(892606463454), block:602183(9495067321843) Average lock time: 1360363ns Average block time: 15767743ns While the following are from the same configuration but with the shim using x2APIC mode: (XEN) Global lock flush_lock: addr=ffff82d0804b01c0, lockval=1adb1adb, not locked (XEN) lock:1841883(1375128998543), block:1658716(10193054890781) Average lock time: 746588ns Average block time: 6145147ns Enabling x2APIC has halved the average lock time, thus reducing contention. Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> For bisection revision-tuple graph see: http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1--l2.html Revision IDs in each graph node refer, respectively, to the Trees above. ---------------------------------------- Running cs-bisection-step --graph-out=/home/logs/results/bisect/xen-unstable/test-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1--l2 --summary-out=tmp/145120.bisection-summary --basis-template=145025 --blessings=real,real-bisect xen-unstable test-amd64-amd64-qemuu-nested-intel debian-hvm-install/l1/l2 Searching for failure / basis pass: 145107 fail [host=debina1] / 145025 [host=chardonnay0] 144990 [host=elbling1] 144972 [host=huxelrebe1] 144959 [host=albana1] 144936 [host=fiano0] 144924 [host=fiano1] 144905 [host=italia0] 144887 [host=huxelrebe0] 144878 [host=chardonnay1] 144850 [host=albana0] 144827 [host=elbling0] 144813 [host=godello1] 144776 ok. Failure / basis pass flights: 145107 / 144776 (tree with no url: minios) (tree with no url: ovmf) (tree with no url: seabios) Tree: linux git://xenbits.xen.org/linux-pvops.git Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git Tree: qemuu git://xenbits.xen.org/qemu-xen.git Tree: xen git://xenbits.xen.org/xen.git Latest b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef dffe18cf81a3c4c2260791d2246220a4d4f0cc8f Basis pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 5852ca48526316918cd82fba1033a6a5379fbc4c Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#b98aebd298246df37b472c52a2ee1023256d02e3-b98aebd298246df37b472c52a2ee1023256d02e3 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#d0d8ad39ecb51cd7497cd524484fe09f50876798-d0d8ad39ecb51cd7497cd524484fe09f50876798 git://xenbits.xen.org/qemu-xen.git#933ebad2470a169504799a1d95b8e41\ 0bd9847ef-933ebad2470a169504799a1d95b8e410bd9847ef git://xenbits.xen.org/xen.git#5852ca48526316918cd82fba1033a6a5379fbc4c-dffe18cf81a3c4c2260791d2246220a4d4f0cc8f Loaded 5001 nodes in revision graph Searching for test results: 144824 [host=godello1] 144813 [host=godello1] 144804 [host=godello1] 144776 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 5852ca48526316918cd82fba1033a6a5379fbc4c 144821 [host=godello1] 144827 [host=elbling0] 144850 [host=albana0] 144878 [host=chardonnay1] 144887 [host=huxelrebe0] 144924 [host=fiano1] 144905 [host=italia0] 144990 [host=elbling1] 144936 [host=fiano0] 144959 [host=albana1] 144972 [host=huxelrebe1] 145058 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef dffe18cf81a3c4c2260791d2246220a4d4f0cc8f 145025 [host=chardonnay0] 145071 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef dffe18cf81a3c4c2260791d2246220a4d4f0cc8f 145083 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef dffe18cf81a3c4c2260791d2246220a4d4f0cc8f 145092 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef f9dee1f945ebb6fb5f9df6f5d95b15c25727f48e 145080 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 5852ca48526316918cd82fba1033a6a5379fbc4c 145090 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 25164571fc11ed3010c5885a98a68fac3b891d33 145086 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 581deaa82952ac652ca1d838da34307a15031046 145088 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef dffe18cf81a3c4c2260791d2246220a4d4f0cc8f 145096 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 9356f9de41628f0675dd3458540b3558c52c4a8a 145105 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef b1710040ca9628a6517bfc06f87dcbb670f8743e 145101 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 145109 blocked b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 145111 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 145114 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef b1710040ca9628a6517bfc06f87dcbb670f8743e 145107 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef dffe18cf81a3c4c2260791d2246220a4d4f0cc8f 145117 pass b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 145120 fail b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef b1710040ca9628a6517bfc06f87dcbb670f8743e Searching for interesting versions Result found: flight 144776 (pass), for basis pass Result found: flight 145058 (fail), for basis failure Repro found: flight 145080 (pass), for basis pass Repro found: flight 145083 (fail), for basis failure 0 revisions at b98aebd298246df37b472c52a2ee1023256d02e3 c530a75c1e6a472b0eb9558310b518f0dfcd8860 d0d8ad39ecb51cd7497cd524484fe09f50876798 933ebad2470a169504799a1d95b8e410bd9847ef 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 No revisions left to test, checking graph state. Result found: flight 145101 (pass), for last pass Result found: flight 145105 (fail), for first failure Repro found: flight 145111 (pass), for last pass Repro found: flight 145114 (fail), for first failure Repro found: flight 145117 (pass), for last pass Repro found: flight 145120 (fail), for first failure *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: b1710040ca9628a6517bfc06f87dcbb670f8743e Bug not present: 3d05407025ed1f83f492f81ba8175fa26b1e2fb3 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/145120/ commit b1710040ca9628a6517bfc06f87dcbb670f8743e Author: Roger Pau Monné <roger.pau@xxxxxxxxxx> Date: Fri Dec 20 16:29:22 2019 +0100 x86/apic: allow enabling x2APIC mode regardless of interrupt remapping x2APIC mode doesn't mandate interrupt remapping, and hence can be enabled independently. This patch enables x2APIC when available, regardless of whether there's interrupt remapping support. This is beneficial specially when running on virtualized environments, since it reduces the amount of vmexits. For example when sending an IPI in xAPIC mode Xen performs at least 3 different accesses to the APIC MMIO region, while when using x2APIC mode a single wrmsr is used. The following numbers are from a lock profiling of a Xen PV shim running a Linux PV kernel with 32 vCPUs and xAPIC mode: (XEN) Global lock flush_lock: addr=ffff82d0804af1c0, lockval=03190319, not locked (XEN) lock:656153(892606463454), block:602183(9495067321843) Average lock time: 1360363ns Average block time: 15767743ns While the following are from the same configuration but with the shim using x2APIC mode: (XEN) Global lock flush_lock: addr=ffff82d0804b01c0, lockval=1adb1adb, not locked (XEN) lock:1841883(1375128998543), block:1658716(10193054890781) Average lock time: 746588ns Average block time: 6145147ns Enabling x2APIC has halved the average lock time, thus reducing contention. Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> Revision graph left in /home/logs/results/bisect/xen-unstable/test-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1--l2.{dot,ps,png,html,svg}. ---------------------------------------- 145120: tolerable ALL FAIL flight 145120 xen-unstable real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/145120/ Failures :-/ but no regressions. Tests which did not succeed, including tests which could not be run: test-amd64-amd64-qemuu-nested-intel 18 capture-logs/l1(18) fail baseline untested test-amd64-amd64-qemuu-nested-intel 17 debian-hvm-install/l1/l2 fail baseline untested jobs: test-amd64-amd64-qemuu-nested-intel fail ------------------------------------------------------------ sg-report-flight on osstest.test-lab.xenproject.org logs: /home/logs/logs images: /home/logs/images Logs, config files, etc. are available at http://logs.test-lab.xenproject.org/osstest/logs Explanation of these reports, and of osstest in general, is at http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master Test harness code can be found at http://xenbits.xen.org/gitweb?p=osstest.git;a=summary _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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