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Alex Auvolat
2023-09-11 20:00:02 +02:00
parent ad6b1cc0be 2548a247f2
commit 51abbb02d8
8 changed files with 141 additions and 83 deletions
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doc/book/reference-manual/configuration.md
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@@ -17,8 +17,9 @@ db_engine = "lmdb"
block_size = 1048576
sled_cache_capacity = 134217728
sled_cache_capacity = "128MiB"
sled_flush_every_ms = 2000
lmdb_map_size = "1T"
replication_mode = "3"
@@ -191,8 +192,8 @@ if geographical replication is used.
### `block_size`
Garage splits stored objects in consecutive chunks of size `block_size`
(except the last one which might be smaller). The default size is 1MB and
should work in most cases. We recommend increasing it to e.g. 10MB if
(except the last one which might be smaller). The default size is 1MiB and
should work in most cases. We recommend increasing it to e.g. 10MiB if
you are using Garage to store large files and have fast network connections
between all nodes (e.g. 1gbps).
@@ -218,6 +219,14 @@ Increase this if sled is thrashing your SSD, at the risk of losing more data in
of a power outage (though this should not matter much as data is replicated on other
nodes). The default value, 2000ms, should be appropriate for most use cases.
### `lmdb_map_size`
This parameters can be used to set the map size used by LMDB,
which is the size of the virtual memory region used for mapping the database file.
The value of this parameter is the maximum size the metadata database can take.
This value is not bound by the physical RAM size of the machine running Garage.
If not specified, it defaults to 1GiB on 32-bit machines and 1TiB on 64-bit machines.
### `replication_mode`
Garage supports the following replication modes: