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Diffstat (limited to 'src/third_party/wiredtiger/src/docs/tune-checksum.dox')
| -rw-r--r-- | src/third_party/wiredtiger/src/docs/tune-checksum.dox | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/src/docs/tune-checksum.dox b/src/third_party/wiredtiger/src/docs/tune-checksum.dox new file mode 100644 index 00000000000..bd7b2fb6ecc --- /dev/null +++ b/src/third_party/wiredtiger/src/docs/tune-checksum.dox @@ -0,0 +1,22 @@ +/*! @page tune_checksum Checksums + +WiredTiger optionally checksums file reads and writes to detect storage +failures. In read-only applications, or when file compression provides +any necessary checksum functionality, or when using backing storage +systems where blocks require no validation, performance can be increased +by turning off checksum support when calling the WT_SESSION::create +method. + +Checksums can be configured to be "off" or "on", as well as "uncompressed". +The "uncompressed" configuration checksums blocks not otherwise protected +by compression. For example, in a system where the compression algorithms +provide sufficient protection against corruption, and when writing a block +which is too small to be usefully compressed, setting the checksum +configuration value to "uncompressed" causes WiredTiger to checksum the +blocks which are not compressed: + +@snippet ex_all.c Configure checksums to uncompressed + +The default WiredTiger configuration is \c uncompressed. + + */ |