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Type:
Bug
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Resolution: Duplicate
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Priority:
Major - P3
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None
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Affects Version/s: WT2.7.0
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Component/s: None
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Labels:None
Hi!
We noticed that memory consumption increased significantly in WT2.7.0
One of our applications has 38 WT DB's we see ~1.5x increase in VSIZE and 10x increase in RSS right after start.
Moreover CPU usage is also 3x higher when nothing is going on (or maybe except periodical snapshots once in 30sec).
Attached small program that opens 10 DB's.
Results I get on my box:
2.6.1
$ /opt/llvm-3.7.0/bin/clang -D_GNU_SOURCE -O3 -g -o many-dbs -I /home/sbn/src/wiredtiger-2.6.1 -L /home/sbn/src/wiredtiger-2.6.1/.libs -lwiredtiger many-dbs.c $ LD_LIBRARY_PATH=/home/sbn/src/wiredtiger-2.6.1/.libs/ ./many-dbs Opening DB's DB's opened: took 5.17866s VSZ RSS %CPU %MEM COMMAND 1193348 28332 2.9 0.2 many-dbs
2.7.0:
$ /opt/llvm-3.7.0/bin/clang -D_GNU_SOURCE -O3 -g -o many-dbs -I /home/sbn/src/wiredtiger-2.7.0 -L /home/sbn/src/wiredtiger-2.7.0/.libs -lwiredtiger many-dbs.c $ LD_LIBRARY_PATH=/home/sbn/src/wiredtiger-2.7.0/.libs/ ./many-dbs Opening DB's DB's opened: took 12.5321s VSZ RSS %CPU %MEM COMMAND 1527744 349472 7.1 2.8 many-dbs
Thanks!
- is related to
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WT-2318 Configurable thread wake up time
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- Closed
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