The Mono VM appears to have a race/deadlock issue when using sgen GC on an lx branded zone. The condition can almost ALWAYS (only once did I see it run through to completion) be reproduced by running test bug-18026. This test stresses the thread pool, task queue, and allocation facilities of the VM -- spawning many tasks performing allocation while concurrently bouncing the thread pool size up and down.
Ryan Zezeski rzezeski
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| <GZ> root@gaia [~] | |
| # dladm show-phys -H i40e0 | |
| LINK RINGTYPE RINGS CLIENTS | |
| i40e0 RX 0-6 <default,mcast> | |
| i40e0 TX 0-6 <default>,i40e0 | |
| i40e0 RX 7-13 i40e0 | |
| i40e0 RX 14-20 -- | |
| i40e0 RX 21-27 -- | |
| i40e0 RX 28-34 -- | |
| i40e0 RX 35-41 -- |
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| 06:44:29 PM CPU 0/s 3/s 4/s 8/s 9/s 10/s 18/s 88/s 89/s 90/s 91/s 92/s 93/s 94/s 95/s 96/s 97/s 98/s 99/s 100/s 101/s 102/s 103/s 104/s 105/s 106/s 107/s 108/s 109/s 110/s 111/s 112/s 113/s 114/s 115/s 116/s 117/s 118/s 119/s 120/s 121/s 122/s 123/s 124/s 125/s 126/s 127/s 128/s 129/s 130/s 131/s 132/s 133/s 134/s 135/s 136/s 137/s 138/s 139/s 140/s 141/s 142/s 143/s 144/s 145/s 146/s 147/s 148/s 149/s 150/s 151/s 152/s 153/s 154/s 155/s 156/s 157/s 158/s 159/s 160/s 161/s 162/s 163/s 164/s 165/s 166/s 167/s 168/s 169/s 170/s 171/s 1 |
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| uint64_t | |
| sl_getnsecs() | |
| { | |
| struct timespec ts; | |
| (void) clock_gettime(CLOCK_MONOTONIC, &ts); | |
| return (((uint64_t)ts.tv_sec * 1000000000L) + ts.tv_nsec); | |
| } | |
| /* | |
| * Spin until approximately ns nanoseconds have passed. The ns value |
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| /code/illumos-gate/usr/src/tools/proto/root_i386-nd/opt/onbld/bin/i386/cw -_gcc -O -Xa -xildoff -errtags=yes -errwarn=%all -erroff=E_EMPTY_TRANSLATION_UNIT -erroff=E_STATEMENT_NOT_REACHED -_gcc=-Wno-missing-braces -_gcc=-Wno-sign-compare -_gcc=-Wno-unknown-pragmas -_gcc=-Wno-unused-parameter -_gcc=-Wno-missing-field-initializers -_gcc=-Wno-array-bounds -_gcc=-Wno-char-subscripts -_gcc=-Wno-uninitialized -_gcc=-Wno-unused-label -xc99=%none -W0,-xglobalstatic -_gcc=-fno-inline-small-functions -_gcc=-fno-inline-functions-called-once -_gcc=-fno-ipa-cp -I /code/illumos-gate/usr/src/lib/libc/port/locale -o native/collate.o -c collate.c | |
| + /opt/gcc/4.4.4/bin/gcc -fident -finline -fno-inline-functions -fno-builtin -fno-asm -fdiagnostics-show-option -nodefaultlibs -D__sun -O -Wall -Wextra -Werror -Wno-missing-braces -Wno-sign-compare -Wno-unknown-pragmas -Wno-unused-parameter -Wno-missing-field-initializers -Wno-array-bounds -Wno-char-subscripts -Wno-uninitialized -Wno-unused-label -std=gnu89 -fno-inline-smal |
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| 11 7086 futex:entry futex(601c40, 128, 0, _, _, _) | |
| 5 7086 futex:entry futex(601c40, 129, 1, _, _, _) | |
| 11 7086 futex:entry futex(601c40, 128, 0, _, _, _) | |
| 5 7086 futex:entry futex(601c40, 129, 1, _, _, _) | |
| 11 7086 futex:entry futex(601c40, 128, 0, _, _, _) | |
| 5 7086 futex:entry futex(601c40, 129, 1, _, _, _) | |
| 11 7086 futex:entry futex(601c40, 128, 0, _, _, _) | |
| 5 7086 futex:entry futex(601c40, 129, 1, _, _, _) | |
| 11 7086 futex:entry futex(601c40, 128, 0, _, _, _) | |
| 5 7086 futex:entry futex(601c40, 129, 1, _, _, _) |
rzezeski
/ gist:8a967f9cfdd3976869eb
Last active
September 4, 2015 16:56
Mono bug-18026 stuck on CentOS 6.6 lx branded zone
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| 2015-06-18T03:20:40.745096+00:00 ny4-c103-n38 unix: [ID 836849 kern.notice] #012#015panic[cpu1]/thread=ffffff00f4380c40: | |
| 2015-06-18T03:20:40.745101+00:00 ny4-c103-n38 genunix: [ID 918906 kern.notice] I/O to pool 'zones' appears to be hung. | |
| 2015-06-18T03:20:40.745105+00:00 ny4-c103-n38 unix: [ID 100000 kern.notice] #012 | |
| 2015-06-18T03:20:40.745110+00:00 ny4-c103-n38 genunix: [ID 655072 kern.notice] ffffff00f4380a20 zfs:vdev_deadman+10b () | |
| 2015-06-18T03:20:40.745114+00:00 ny4-c103-n38 genunix: [ID 655072 kern.notice] ffffff00f4380a70 zfs:vdev_deadman+4a () | |
| 2015-06-18T03:20:40.745128+00:00 ny4-c103-n38 genunix: [ID 655072 kern.notice] ffffff00f4380ac0 zfs:vdev_deadman+4a () | |
| 2015-06-18T03:20:40.745133+00:00 ny4-c103-n38 genunix: [ID 655072 kern.notice] ffffff00f4380af0 zfs:spa_deadman+ad () | |
| 2015-06-18T03:20:40.745138+00:00 ny4-c103-n38 genunix: [ID 655072 kern.notice] ffffff00f4380b90 genunix:cyclic_softint+f3 () | |
| 2015-06-18T03:20:40.745142+00:00 ny4-c103-n38 genunix: [ID 655072 kern.notice] ffffff00f4380ba0 unix: |
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| for i in basic.exe basic-float.exe basic-long.exe basic-calls.exe objects.exe arrays.exe basic-math.exe exceptions.exe iltests.exe devirtualization.exe generics.exe basic-simd.exe ; do ./test_op_il_seq_point.sh $i || (./test_op_il_seq_point_headerfooter.sh; exit 1) || exit 1; done | |
| Checking unintended native code changes in basic.exe without AOT | |
| Checking unintended native code changes in basic-float.exe without AOT | |
| Checking unintended native code changes in basic-long.exe without AOT | |
| Checking unintended native code changes in basic-calls.exe without AOT | |
| Checking unintended native code changes in objects.exe without AOT | |
| Checking unintended native code changes in arrays.exe without AOT | |
| 1d0 | |
| < Method (wrapper managed-to-native) System.Threading.InternalThread:Thread_free_internal (System.Threading.InternalThread,intptr) (code length 184) [arrays.exe] | |
| 7,8d5 |
rzezeski
/ gist:cc189d6bbcf0e296f602
Created
May 28, 2015 00:13
TCP test (sometimes connect() fails on SmartOS, but not on OmniOS or OSX)
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| /* | |
| * Verify fundamental behavior of TCP stack. | |
| * | |
| * Based on a potential bug found when running libMicro's close_tcp | |
| * and pipe benchmarks on SmartOS. | |
| * | |
| * https://github.com/rzezeski/libMicro/blob/master/src/close_tcp.c | |
| * | |
| * https://github.com/rzezeski/libMicro/blob/master/src/pipe.c | |
| * |
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| #!/bin/sh | |
| dtrace -n ' | |
| #pragma D option quiet | |
| BEGIN { | |
| printf("%4s %21s\tDURATION (secs)\n", "ZONE", "ADDR:PORT"); | |
| } | |
| tcp:::state-change |