Unable to run Microbenchmark

[pranav shenoy]

Hi,

I am trying to run the microbenchmark on Ubuntu 20.04

I ran 

make static_lib

make simple_example (just for testing if the library is build)

DEBUG_LEVEL=0 make run_microbench

Error:

microbench/db_basic_bench.o: In function `rocksdb::DBPut(benchmark::State&)':
/home/admin/pranav/rocksdb/./util/cast_util.h:21: undefined reference to `typeinfo for rocksdb::DBImpl'
/home/admin/pranav/rocksdb/./util/cast_util.h:21: undefined reference to `typeinfo for rocksdb::DB'

I have attached the screenshot with the error.

Thank you for the help.

[Dan Carfas]

Hi Pranav,

Here is the buzz from the Speedb hive:

"I have just tried doing what you did on latest rocksdb I cloned from the GitHub repo and all was well.

Maybe (again, just to be on the safe side) run 'make clean' before 'make static_lib' "

What version are you working with?

To join the discussion about your question:  https://discord.com/channels/1001437353312796782/1041230519918141470

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[Dan Carfas]

also received this input from the hive:

"works for me as well, 

install google benchmark - https://github.com/google/benchmark#installation

cd rocksdb

git checkout v7.7.3

make clean; make static lib

DEBUG_LEVEL=0 make run_microbench "

[Adam Retter]

I just attempted to reproduce this on a clean Ubuntu 20.04.

I am using the `HEAD` of the `main` branch.

The following works fine:

make static_lib

However `make run_microbench` fails with the error:

microbench/ribbon_bench.cc:8:10 benchmark/benchmark.h: No such file or directory

Pranav, can you confirm which branch, tag, or version you are using please?

[jay.z...@yahoo.com]

1. you need to install googlebenchmark 1.6.0+

https://github.com/facebook/rocksdb/tree/main/microbench#prerequisite

I think Ubuntu 20.04 apt-get may still using the pre-1.6.0+ version

Here is the steps rocksdb uses for setup their ubuntu 20.04:

```

RUN git clone --depth 1 --branch v1.7.0 https://github.com/google/benchmark.git ~/benchmark

RUN cd ~/benchmark && mkdir build && cd build && cmake .. -GNinja -DCMAKE_BUILD_TYPE=Release -DBENCHMARK_ENABLE_GTEST_TESTS=0 && ninja && ninja install

```

https://github.com/facebook/rocksdb/blob/5d7cf311ca46b4f808d24443d0678d583bdca76c/build_tools/ubuntu20_image/Dockerfile#L52-L53

2. You could also try using the cmake with option -DWITH_BENCHMARK=1, then run the same target make run_microbench:

https://github.com/facebook/rocksdb/blob/76383bea5df1136c95babf5f9f40b24f85e9ad8e/microbench/CMakeLists.txt#L15

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[Alan Paxton]

Hi, I just wanted to confirm that for me this works on a Clean Ubuntu 20.04 once I install googlebenchmark according to Jay's instructions.

I've encoded it in a minimal Dockerfile, which installs enough to build the microbenchmarks on HEAD.

Assuming you have docker installed, you can save the Dockerfile in a directory, cd there, and run:

$ docker build -t alanpaxton/rocksdb-focal-microbench:1.0 .

$ docker run -id docker.io/alanpaxton/rocksdb-focal-microbench:1.0 --name=rocksdb_microbench

$ docker exec -it rocksdb_microbench /bin/bash

# cd ~/rocksdb

# DEBUG_LEVEL=0 make run_microbench

Hope that helps

--Alan