diff options
Diffstat (limited to 'deprecated/mem_tests/README.md')
-rw-r--r-- | deprecated/mem_tests/README.md | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/deprecated/mem_tests/README.md b/deprecated/mem_tests/README.md deleted file mode 100644 index 44bf16c9..00000000 --- a/deprecated/mem_tests/README.md +++ /dev/null @@ -1,52 +0,0 @@ -# Memory tests - -## Usage - -These scripts are made to parse TCMalloc output in order to extract certain -info from them. - -In particular, these scripts rely on the error logging system for ChromeOS in -order to extract information. In order to use a script (e.g. `total_mem.py`), -you just have the command: - -``` -./total_mem.py FILENAME -``` - -where `FILENAME` is the name of the log file to be parsed. - -## Codebase Changes - -There are two ideas that motivate these changes: - -1. Turn on TCMalloc sampling. -2. Use perf to collect the sample information. - - -The following files have to be changed: - -in `chrome/browser/metrics/perf_provider_chrome_os`, add: - -``` -#include "third_party/tcmalloc/chromium/src/gperftools/malloc_extension.h" -``` - -Change the perf profiling interval to something small (60*1000 milliseconds). - -Inside DoPeriodicCollection, insert the following code: - -``` -std::string output; -char* chr_arr = new char[9999]; -MallocExtension::instance() ->GetHeapSample(&output); -MallocExtension::instance() ->GetStats(chr_arr, 9999); -LOG(ERROR) << "Output Heap Data: "; -LOG(ERROR) << output; -LOG(ERROR) << "Output Heap Stats: "; -output = ""; -for (unsigned int i = 0; i < strlen(chr_arr); i++) { - output += chr_arr[i]; -} -LOG(ERROR) << output; -delete[] chr_arr; -``` |