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41e66ebce2
Presents current heap profile recording. Works in text mode or dumps to collapsed stacks format from which flame graph can be generated. To generate a flamegraph: (gdb) scylla heapprof --flame Wrote heapprof.stacks $ flamegraph.pl --colors mem < heapprof.stacks > heapprof.svg flamegraph.pl comes from: https://github.com/brendangregg/FlameGraph.git Text mode example: (gdb) scylla heapprof --min 100000000 All (274699676, #10213) \-- void* memory::cpu_pages::allocate_large_and_trim<memory::cpu_pages::allocate_large_aligned(unsigned int, unsigned int)::{lambda(unsigned int, unsigned int)#1}>(unsigned int, memory::cpu_pages::allocate_large_aligned(unsigned int, unsigned int)::{lambda(unsigned int, unsigned int)#1}) + 169 (268435456, #1) memory::allocate_large_aligned(unsigned long, unsigned long) + 87 memory::allocate_aligned(unsigned long, unsigned long) + 48 aligned_alloc + 9 logalloc::segment_zone::segment_zone() + 304 logalloc::segment_pool::allocate_segment() + 477 logalloc::segment_pool::segment_pool() + 304 __tls_init.part.801 + 72 logalloc::region_group::release_requests() + 1333 logalloc::region_group::add(logalloc::region_group*) + 514 The branches are formatted like this: -- <symbol> (<size>, #<count>) Where <size> is total size of live objects and <count> is total number of live objects, for all objects allocated from paths going through this node. Nodes which share the same <size> and <count> are stacked like this: -- <symbol_1> (<size>, #<count>) <symbol_2> <symbol_3> Message-Id: <1475583334-19524-1-git-send-email-tgrabiec@scylladb.com>
Scylla
Building Scylla
In addition to required packages by Seastar, the following packages are required by Scylla.
Submodules
Scylla uses submodules, so make sure you pull the submodules first by doing:
git submodule init
git submodule update --init --recursive
Building and Running Scylla on Fedora
- Installing required packages:
sudo dnf install yaml-cpp-devel lz4-devel zlib-devel snappy-devel jsoncpp-devel thrift-devel antlr3-tool antlr3-C++-devel libasan libubsan gcc-c++ gnutls-devel ninja-build ragel libaio-devel cryptopp-devel xfsprogs-devel numactl-devel hwloc-devel libpciaccess-devel libxml2-devel python3-pyparsing lksctp-tools-devel protobuf-devel protobuf-compiler systemd-devel libunwind-devel
- Build Scylla
./configure.py --mode=release --with=scylla --disable-xen
ninja-build build/release/scylla -j2 # you can use more cpus if you have tons of RAM
- Run Scylla
./build/release/scylla
- run Scylla with one CPU and ./tmp as data directory
./build/release/scylla --datadir tmp --commitlog-directory tmp --smp 1
- For more run options:
./build/release/scylla --help
Building Fedora RPM
As a pre-requisite, you need to install Mock on your machine:
# Install mock:
sudo yum install mock
# Add user to the "mock" group:
usermod -a -G mock $USER && newgrp mock
Then, to build an RPM, run:
./dist/redhat/build_rpm.sh
The built RPM is stored in /var/lib/mock/<configuration>/result directory.
For example, on Fedora 21 mock reports the following:
INFO: Done(scylla-server-0.00-1.fc21.src.rpm) Config(default) 20 minutes 7 seconds
INFO: Results and/or logs in: /var/lib/mock/fedora-21-x86_64/result
Building Fedora-based Docker image
Build a Docker image with:
cd dist/docker
docker build -t <image-name> .
Run the image with:
docker run -p $(hostname -i):9042:9042 -i -t <image name>
Contributing to Scylla
Do not send pull requests.
Send patches to the mailing list address scylladb-dev@googlegroups.com. Be sure to subscribe.
In order for your patches to be merged, you must sign the Contributor's License Agreement, protecting your rights and ours. See http://www.scylladb.com/opensource/cla/.