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5f64fd0a21
Introduce new patterns for direct sql that are safe and fast. MiniSql is not prone to memory bloat that can happen with direct PG usage. It also has an extremely fast materializer and very a convenient API - DB.exec(sql, *params) => runs sql returns row count - DB.query(sql, *params) => runs sql returns usable objects (not a hash) - DB.query_hash(sql, *params) => runs sql returns an array of hashes - DB.query_single(sql, *params) => runs sql and returns a flat one dimensional array - DB.build(sql) => returns a sql builder See more at: https://github.com/discourse/mini_sql
43 lines
1.0 KiB
Ruby
43 lines
1.0 KiB
Ruby
require_dependency 'memory_diagnostics'
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class Admin::DiagnosticsController < Admin::AdminController
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layout false
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skip_before_action :check_xhr
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def memory_stats
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text = nil
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if params.key?(:diff)
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if !MemoryDiagnostics.snapshot_exists?
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text = "No initial snapshot exists"
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else
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text = MemoryDiagnostics.compare
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end
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elsif params.key?(:snapshot)
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MemoryDiagnostics.snapshot_current_process
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text = "Writing snapshot to: #{MemoryDiagnostics.snapshot_filename}\n\nTo get a diff use ?diff=1"
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else
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text = MemoryDiagnostics.memory_report(class_report: params.key?(:full))
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end
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render plain: text
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end
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def dump_heap
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begin
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# ruby 2.1
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GC.start(full_mark: true)
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require 'objspace'
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io = File.open("discourse-heap-#{SecureRandom.hex(3)}.json", 'w')
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ObjectSpace.dump_all(output: io)
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io.close
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render plain: "HEAP DUMP:\n#{io.path}"
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rescue
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render plain: "HEAP DUMP:\nnot supported"
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end
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end
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end
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