Results of 1 - 8 of about 8 for allocation (0.003 sec.)
- jemalloc 13013
- On supported platforms, DuckDB replaces the system's memory allocator with jemalloc . jemalloc is statically linked into DuckDB and cannot be installed or loaded during runtime. For technical reasons, we used to distribute jemalloc as an ex
...llowing configuration option: SET allocator_background_threads = true; Background threads asynchronously purge outstanding allocations so that this doesn't have to be done synchronously by the foreground threads. This improves allocation performance, and s...hould be noticeable in allocation-heavy workloads, especially on many-core CPUs.... - https://man.mtool.work/duckdb/2.0/internals/jemalloc.html
- Limits 10718
- This page contains DuckDB's built-in limit values. To check the value of a setting on your system, use the current_setting function. Limit Values Limit Default value Configuration option Comment Array size 100000 - BLOB size 4 GB - Expressi
...on depth 1000 max_expression_depth Memory allocation for a vector 128 GB - Memory use 80% of RAM memory_limit Note: This limit only applies to the buffer manager. String size... - https://man.mtool.work/duckdb/2.0/operations_manual/limits.html
- Building Extensions 8928
- Extensions can be built from source and installed from the resulting local binary. Building Extensions To build using extension flags, set the BUILD_EXTENSIONS flag to the list of extensions that you want to be built. For example: BUILD_EXT
...t has the feature to “inline” strings that are under a certain length (12 bytes), this means they don't require a separate allocation. When this flag is set, we disable this and don't inline small strings. DISABLE_MEMORY_SAFETY Our data structures that are... - https://man.mtool.work/duckdb/2.0/dev/building/building_extensions.html
- Import Data 8422
- Overview The JDBC driver offers two ways to load data into DuckDB in bulk: the high-performance Appender and a JDBC batch writer. This page describes both and when to use each. Appender The Appender is available in the DuckDB JDBC driver vi
...mns appends fastest. Avoid allocating a Java object per row. Boxing values or constructing a new object for every row adds allocation and garbage-collection pressure. Prefer the primitive append() overloads and reuse buffers where you can. Keep strings sho... - https://man.mtool.work/duckdb/2.0/clients/java/data_import.html
- Unit Tester Configuration 8422
- There are three ways of setting options for the unit tester: Command Line Arguments Configuration File Environment Variables Configuration Options List See the Configuration Options List for the full list of available options. Command Line
...r extensions not bundled in --base-config <path> Config file to load and base initial settings on --block-size <num> Block Allocation Size; must be a power of 2 --checkpoint-on-shutdown , --no-checkpoint-on-shutdown Whether or not to checkpoint on database... - https://man.mtool.work/duckdb/2.0/dev/sqllogictest/test_configuration.html
- ODBC 101: A Duck Themed Guide to ODBC 7916
- What is ODBC? ODBC which stands for Open Database Connectivity, is a standard that allows different programs to talk to different databases including, of course, DuckDB. This makes it easier to build programs that work with many different d
...nd provides a global context in which to access data. | | Use case | Initializing ODBC, managing driver behavior, resource allocation. | | Additional information | Must be allocated once per application upon starting, and freed at the end. | Connection | H... - https://man.mtool.work/duckdb/2.0/guides/odbc/general.html
- Configuration 7663
- DuckDB has a number of configuration options that can be used to change the behavior of the system. The configuration options can be set using either the SET statement or the PRAGMA statement . They can be reset to their original values usi
...automatic allocator_background_threads Whether to enable the allocator background threads. BOOLEAN false allocator_bulk_deallocation_flush_threshold If a bulk deallocation larger than this occurs, flush outstanding allocations. VARCHAR 512.0 MiB allocator..._flush_threshold Peak allocation threshold at which to flush the allocator after completing a task. VARCHAR 134217728B allow_asterisks_in_http_paths Allow... - https://man.mtool.work/duckdb/2.0/configuration/overview.html
- Complete API 7139
- This page contains the reference for DuckDB's C API. The reference contains several deprecation notices. These concern methods whose long-term availability is not guaranteed as they may be removed in the future. That said, DuckDB's develope
...lined Whether or not the duckdb_string_t value is inlined. This means that the data of the string does not have a separate allocation. Syntax bool duckdb_string_is_inlined ( duckdb_string_t string ); duckdb_string_t_length Get the string length of a string... - https://man.mtool.work/duckdb/2.0/clients/c/api.html
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