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docs: [cacheDataPath] Add note for /tmp dir

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Jiekun 2024-07-25 17:06:09 +08:00
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@ -1313,7 +1313,7 @@ Below is the output for `/path/to/vmselect -help`:
-blockcache.missesBeforeCaching int -blockcache.missesBeforeCaching int
The number of cache misses before putting the block into cache. Higher values may reduce indexdb/dataBlocks cache size at the cost of higher CPU and disk read usage (default 2) The number of cache misses before putting the block into cache. Higher values may reduce indexdb/dataBlocks cache size at the cost of higher CPU and disk read usage (default 2)
-cacheDataPath string -cacheDataPath string
Path to directory for cache files. By default, the cache is not persisted. Path to directory for cache files. By default, the cache is not persisted. Please note that vmselect will create a `/tmp/searchResults` folder under cacheDataPath, which contains data from vmstorage nodes for search query. Ensure that `cacheDataPath/tmp/searchResults` will not be removed. Refer to issue #5770 for more details.
-cacheExpireDuration duration -cacheExpireDuration duration
Items are removed from in-memory caches after they aren't accessed for this duration. Lower values may reduce memory usage at the cost of higher CPU usage. See also -prevCacheRemovalPercent (default 30m0s) Items are removed from in-memory caches after they aren't accessed for this duration. Lower values may reduce memory usage at the cost of higher CPU usage. See also -prevCacheRemovalPercent (default 30m0s)
-cluster.tls -cluster.tls