[Webkit-unassigned] [Bug 208174] New: Check NetworkProcess' cache policy

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=208174

            Bug ID: 208174
           Summary: Check NetworkProcess' cache policy
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ysuzuki at apple.com
                CC: beidson at apple.com

Membuster seems having several large CachedScript / CachedCSSStyleSheet Vectors, this sounds strange to me since it should be (hopefully) mapped as a mmap-ed file.
My guess is something pathological happens, but need to check what is preventing from caching for these resources.

1. It is possible that they are non-cached due to the right policy. In this case, we cannot get improvement.
2. It is possible that Membuster's memory-capturing timing is super quick and we get this data before NetworkProcess's notification replaces the content with mmap-ed file, this is possible.

But on the other hand,

1. It is possible that this is not cached due to wrong policy. We should double-check.
2. It is possible that this is not replaced with mmap-ed content due to wrong reason. We should double-check.

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