view tests/test-diff-issue2761.t @ 29151:7996c3acc33b

wireproto: optimize handling of large batch responses

Now that batch can be used by remotefilelog, the quadratic string
copying this was doing was actually disastrous. In my local testing,
fetching a 56 meg file used to take 3 minutes, and now takes only a
few seconds.

Test issue2761

  $ hg init

  $ touch to-be-deleted
  $ hg add
  adding to-be-deleted
  $ hg ci -m first
  $ echo a > to-be-deleted
  $ hg ci -m second
  $ rm to-be-deleted
  $ hg diff -r 0

Same issue, different code path

  $ hg up -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ touch does-not-exist-in-1
  $ hg add
  adding does-not-exist-in-1
  $ hg ci -m third
  $ rm does-not-exist-in-1
  $ hg diff -r 1