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Type: Bug
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Resolution: Done
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Priority: Major - P3
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Affects Version/s: 2.8.0-rc1
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Component/s: Storage
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Fully Compatible
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ALL
A 2.8.0-rc1 mongod with wired tiger in LSM mode is using 100% CPU. It isn't doing any user operations.
Start command:
/usr/share/mongodb-linux-x86_64-2.8.0-rc1/bin/mongod --dbpath ./wttiger3/ --port 30020 --logpath ./wttiger3/log.log --storageEngine=wiredTiger --wiredTigerCollectionConfig type=lsm,block_compressor= --fork
Top:
top - 16:12:02 up 16 days, 7:05, 7 users, load average: 1.19, 1.15, 1.24 Tasks: 354 total, 2 running, 351 sleeping, 0 stopped, 1 zombie %Cpu(s): 11.2 us, 0.6 sy, 0.0 ni, 88.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem: 24681876 total, 24451416 used, 230460 free, 29884 buffers KiB Swap: 8388604 total, 581668 used, 7806936 free. 842948 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6778 steve 20 0 0.120t 0.011t 254492 S 123.9 45.8 138:54.59 mongod 23246 steve 20 0 1540472 779192 17560 S 21.3 3.2 572:54.92 chrome 17126 steve 20 0 903068 196988 10688 S 10.3 0.8 494:15.92 chrome
> db.currentOp() { "inprog" : [ ] }
> db.serverBuildInfo() { "version" : "2.8.0-rc1", "gitVersion" : "c8171e7f969519af8b87a43425ae291ee69a0191", "OpenSSLVersion" : "", "sysInfo" : "Linux build14.nj1.10gen.cc 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49", "loaderFlags" : "-fPIC -pthread -Wl,-z,now -rdynamic", "compilerFlags" : "-Wnon-virtual-dtor -Woverloaded-virtual -std=c++11 -fPIC -fno-strict-aliasing -ggdb -pthread -Wall -Wsign-compare -Wno-unknown-pragmas -Winvalid-pch -pipe -Werror -O3 -Wno-unused-local-typedefs -Wno-unused-function -Wno-deprecated-declarations -Wno-unused-but-set-variable -fno-builtin-memcmp -std=c99", "allocator" : "tcmalloc", "versionArray" : [ 2, 8, 0, -9 ], "javascriptEngine" : "V8", "bits" : 64, "debug" : false, "maxBsonObjectSize" : 16777216, "ok" : 1 }