Ivan Rakov created IGNITE-5961: ---------------------------------- Summary: Align pages in LFS partition files to pageSize Key: IGNITE-5961 URL: https://issues.apache.org/jira/browse/IGNITE-5961 Project: Ignite Issue Type: Improvement Components: persistence Affects Versions: 2.1 Reporter: Ivan Rakov Assignee: Ivan Rakov Priority: Critical Fix For: 2.2
We store 17 bytes of header at the start of every partition file: {noformat} /** Allocated field offset. */ static final int HEADER_SIZE = 8/*SIGNATURE*/ + 4/*VERSION*/ + 1/*type*/ + 4/*page size*/; {noformat} Even if pageSize is equal to OS page cache size and equal to SSD disk page size (which is best scenario), when generate two dirty pages insteadf of one. This is suboptimal and can be a bottleneck of checkpoint write speed. -- This message was sent by Atlassian JIRA (v6.4.14#64029)