[LibOS] Add Page Cache feature for trusted files#2011
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sahason wants to merge 1 commit intogramineproject:masterfrom
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[LibOS] Add Page Cache feature for trusted files#2011sahason wants to merge 1 commit intogramineproject:masterfrom
sahason wants to merge 1 commit intogramineproject:masterfrom
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The Page Cache feature for trusted files has been implemented using a Least Recently Used (LRU) eviction policy. Files that are accessed more than 10 times will be cached to enhance performance. Additionally, a new manifest option `sgx.trusted_files_cache_size` has been introduced to specify the size of the cache allocated for trusted files. Signed-off-by: Sonali Saha <sonali.saha@intel.com>
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check issue #1712 for details.
This PR introduces a manifest option
sgx.trusted_files_cache_sizewhich specifies the cache size allocated for trusted files. A trusted file is cached if the file is opened more than 10 times. Cache eviction policy is Least Recently Used aka LRU. This optimization is used when there are frequently-reused files.Below are the results with and without this PR for nginx run:
Fixes #1712
How to test this PR?
Change
worker_processesvalue toautoinCI-Examples/nginx/nginx-gramine.conf.templateAdd
open_file_cache max=1024 inactive=10s;underhttp {block inCI-Examples/nginx/nginx-gramine.conf.templateNative run:
SGX run:
Initial 1-3 run with gramine-sgx might give low performance results as trusted file chunks are added to the page cache for the first time. After 1-3 iterations results become consistent.
This change is