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triton-debug
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| #linux-syscalls aka lx-syscalls | |
| root@3bd53e4a7fe4:/# dtrace -ln 'lx-syscall:::' | |
| ID PROVIDER MODULE FUNCTION NAME | |
| 1549 lx-syscall sys32 inotify_init1 return | |
| 1550 lx-syscall sys32 preadv entry | |
| 1551 lx-syscall sys32 preadv return | |
| 1552 lx-syscall sys32 pwritev entry | |
| # Start tracing the syscalls. Grouped by execname, pid and syscallname (probefunc) | |
| root@3bd53e4a7fe4:/# dtrace -n 'syscall::: { @num[execname,pid,probefunc] = count() }' | |
| dtrace: description 'lx-syscall::: ' matched 1352 probes | |
| ^C | |
| node 23210 fsync 11368 | |
| node 23210 ioctl 11368 | |
| node 23210 open 11368 | |
| node 23210 pwrite64 11368 | |
| node 23210 close 11370 | |
| node 23210 unlink 11370 | |
| node 23210 epoll_wait 30332 | |
| node 23210 read 30332 | |
| node 23210 write 30332 | |
| node 23210 futex 180019 | |
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| #Switch to Triton | |
| eval $(triton env) | |
| # Start nginx on triton | |
| docker run -d --name test -p 80 nginx |
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| roman@minty ~ $ docker exec -ti test /bin/bash | |
| root@ae35cee7759b:/# ls -l |
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| roman@minty ~ $ docker exec -ti waste-io-example /bin/bash | |
| root@3bd53e4a7fe4:/# | |
| root@3bd53e4a7fe4:/# iostat -M 1 | |
| bash: iostat: command not found | |
| #Oh...damn...iostat would tell us if our IO is sane. | |
| #Ah.../native to the rescue | |
| root@3bd53e4a7fe4:/# iostat -M 1 | |
| tty ramdisk1 sd0 sd1 sd2 cpu | |
| tin tout Mps tps serv Mps tps serv Mps tps serv Mps tps serv us sy dt id | |
| 0 236 0 0 0 0 0 0 2 148 0 2 42 1 4 8 0 89 | |
| 0 1214 0 0 0 0 0 0 7 3583 0 0 0 0 9 14 0 77 | |
| 0 2100 0 0 0 0 0 0 7 3531 0 5 157 0 7 17 0 77 | |
| 0 941 0 0 0 0 0 0 7 3640 0 0 0 0 7 14 0 79 |
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| root@3bd53e4a7fe4:/# dtrace -n 'lx-syscall::open:entry/execname=="node"/ { @num[jstack()] = count() }' | |
| dtrace: description 'lx-syscall::open:entry' matched 2 probes | |
| ^C | |
| libc.so.6`open+0x10 | |
| libc.so.6`sysconf+0x54c | |
| node`_ZN2v88internal20MarkCompactCollector31NumberOfParallelCompactionTasksEil+0x46 | |
| node`_ZN2v88internal20MarkCompactCollector23EvacuatePagesInParallelEv+0xea | |
| node`_ZN2v88internal20MarkCompactCollector29EvacuateNewSpaceAndCandidatesEv+0x67 | |
| node`_ZN2v88internal20MarkCompactCollector14CollectGarbageEv+0x29 | |
| node`_ZN2v88internal4Heap11MarkCompactEv+0x6d | |
| node`_ZN2v88internal4Heap24PerformGarbageCollectionENS0_16GarbageCollectorENS_15GCCallbackFlagsE+0x4b0 | |
| node`_ZN2v88internal4Heap14CollectGarbageENS0_16GarbageCollectorEPKcS4_NS_15GCCallbackFlagsE+0x142 | |
| node`_ZN2v88internal4Heap15HandleGCRequestEv+0x84 | |
| node`_ZN2v88internal10StackGuard16HandleInterruptsEv+0x31c | |
| node`_ZN2v88internal18Runtime_StackGuardEiPPNS0_6ObjectEPNS0_7IsolateE+0x45 | |
| 0x2bd84b30961b | |
| 0x2bd84b44e1f9 | |
| 0x2bd84b4490eb | |
| 0x2bd84b44281b | |
| 0x2bd84b30d157 | |
| 0x2bd84b442615 | |
| 0x2bd84b337f84 | |
| 0x2bd84b322922 | |
| node`_ZN2v88internal12_GLOBAL__N_16InvokeEPNS0_7IsolateEbNS0_6HandleINS0_6ObjectEEES6_iPS6_S6_+0xb3 | |
| node`_ZN2v88internal9Execution4CallEPNS0_7IsolateENS0_6HandleINS0_6ObjectEEES6_iPS6_+0x61 | |
| node`_ZN2v88Function4CallENS_5LocalINS_7ContextEEENS1_INS_5ValueEEEiPS5_+0x139 | |
| node`_ZN2v88Function4CallENS_5LocalINS_5ValueEEEiPS3_+0x41 | |
| node`_ZN4node9AsyncWrap12MakeCallbackEN2v85LocalINS1_8FunctionEEEiPNS2_INS1_5ValueEEE+0x149 | |
| node`_ZN4nodeL5AfterEP7uv_fs_s+0x146 | |
| node`uv__work_done+0xa5 | |
| node`uv__async_event+0xab | |
| node`uv__async_io+0xa3 | |
| node`uv__io_poll+0x3a0 | |
| node`uv_run+0x156 | |
| node`_ZN4node5StartEiPPc+0x468 | |
| libc.so.6`__libc_start_main+0xf5 | |
| 2 | |
| libpthread.so.0`open+0x2d | |
| node`worker+0xa1 | |
| node`uv__thread_start+0x19 | |
| libpthread.so.0`start_thread+0xc4 | |
| 62043 |
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| docker run -d --name waste-io-example gamlerhart/waste-io |
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| root@3bd53e4a7fe4:/# dtrace -n 'lx-syscall::open:entry/execname=="node"/ { @num[copyinstr(arg0)] = count() }' | |
| dtrace: description 'lx-syscall::open:entry' matched 2 probes | |
| ^C | |
| /tmp/io-file-0.00023033588805110305 1 | |
| /tmp/io-file-0.00029973264092197915 1 | |
| /tmp/io-file-0.001082331117725488 1 | |
| /tmp/io-file-0.0017028727466004145 1 | |
| /tmp/io-file-0.00224423432995402 1 | |
| /tmp/io-file-0.002446706340221372 1 | |
| /tmp/io-file-0.002880551536430742 1 |
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