cb0c05b5b4
Applying deltas in the large streaming mode is horrifically slow. Trying to pack icu4c is impossible because a single 11 MiB file sits on top of a 15 MiB file though a 10 deep delta chain, which results in this very slow inflate process. Upping the default limit to 15 MiB lets us process this large in a reasonable time, but its still sufficiently low enough to prevent exploding the heap of a very large process like Eclipse or Gerrit Code Review. We have to revisit the streaming delta application process and do something much smarter, like flatten the delta chain before we apply it to the base. But even that is ugly, I've seen a 155 MiB delta sitting on top of a 450 MiB file to produce a 300 MiB result object. If the chain is deep, we may have trouble flatting it down. Change-Id: If5a0dcbf9d14ea683d75546f104b09bb8cd8fdbb Signed-off-by: Shawn O. Pearce <spearce@spearce.org> |
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