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2018-04-23erts: Rewrite memory instrumentationJohn Högberg
This commit replaces the old memory instrumentation with a new implementation that scans carriers instead of wrapping erts_alloc/erts_free. The old implementation could not extract information without halting the emulator, had considerable runtime overhead, and the memory maps it produced were noisy and lacked critical information. Since the new implementation walks through existing data structures there's no longer a need to start the emulator with special flags to get information about carrier utilization/fragmentation. Memory fragmentation is also easier to diagnose as it's presented on a per-carrier basis which eliminates the need to account for "holes" between mmap segments. To help track allocations, each allocation can now be tagged with what it is and who allocated it at the cost of one extra word per allocation. This is controlled on a per-allocator basis with the +M<S>atags option, and is enabled by default for binary_alloc and driver_alloc (which is also used by NIFs).
2016-04-13Merge branch 'egil/tools/modernize-tests'Björn-Egil Dahlberg
* egil/tools/modernize-tests: tools: Don't divide by zero in tests Fix instruments_SUITE sumblock check Eliminate use of doc and suite clauses Replace ?t with test_server Use test_server:is_debug/0 instead of custom check Replace use of test_server:format/2 with io:format/2 Eliminate use of ?config() macro Eliminate use of test_server:fail/0,1 Eliminate erlang:now/0 Modernize use of timetraps Remove ?line macros
2016-04-07Fix instruments_SUITE sumblock checkBjörn-Egil Dahlberg
2016-04-07Eliminate use of doc and suite clausesBjörn-Egil Dahlberg
Those clause are obsolete and never used by common_test.
2016-04-07Replace ?t with test_serverBjörn-Egil Dahlberg
The macro ?t is deprecated. Replace its use with 'test_server'.
2016-04-07Eliminate use of test_server:fail/0,1Björn-Egil Dahlberg
2016-04-07Eliminate erlang:now/0Björn-Egil Dahlberg
2016-04-07Modernize use of timetrapsBjörn-Egil Dahlberg
2016-04-06Remove ?line macrosBjörn-Egil Dahlberg
2016-03-15update copyright-yearHenrik Nord
2016-02-17Eliminate use of test_server.hrl and test_server_line.hrlBjörn Gustavsson
As a first step to removing the test_server application as as its own separate application, change the inclusion of test_server.hrl to an inclusion of ct.hrl and remove the inclusion of test_server_line.hrl.
2015-06-18Change license text to APLv2Bruce Yinhe
2011-03-11Update copyright yearsBjörn-Egil Dahlberg
2011-02-17Rename Suite Callback to Common Test HookLukas Larsson
2011-02-17Fix formatting for toolsLukas Larsson
2011-02-17Add init_per_suite and end_per_suiteLukas Larsson
2011-02-17Add ts_install_scb to suite/0Lukas Larsson
2011-02-17Update tools tests to conform with common_test standardLukas Larsson
2011-02-17Update all fin_per_testcase to end_per_testcase.Lukas Larsson
2010-01-19Add test suite for the tools applicationBjörn Gustavsson