// order of a few MiB in size.
	//
	// The kind of metadata this applies to has a very low overhead when compared
	// to address space used, but their constant overheads for small heaps would
	// be very high if they were to be backed by huge pages (e.g. a few MiB makes
	// a huge difference for an 8 MiB heap, but barely any difference for a 1 GiB

	clientCertificate   = "AssumeRoleWithCertificate"
	customTokenIdentity = "AssumeRoleWithCustomToken"
	assumeRole          = "AssumeRole"

	stsRequestBodyLimit = 10 * (1 << 20) // 10 MiB

	// JWT claim keys
	expClaim = "exp"
	subClaim = "sub"
	audClaim = "aud"
	issClaim = "iss"

	// JWT claim to check the parent user
	parentClaim = "parent"

	// LDAP claim keys

	// mapped, since min is likely rounded down to include the system page containing minHeapIdx.
	//
	// For a chunk size of 4 MiB this structure will only use 2 MiB for a 1 TiB contiguous heap.
	chunks     []atomicScavChunkData
	min, max   atomic.Uintptr
	minHeapIdx atomic.Uintptr

	s := new(ScavengeIndex)
	// This is a bit lazy but we easily guarantee we'll be able
	// to reference all the relevant chunks. The worst-case
	// memory usage here is 512 MiB, but tests generally use
	// small offsets from BaseChunkIdx, which results in ~100s
	// of KiB in memory use.
	//
	// This may still be worth making better, at least by sharing

	if err != nil {
		// Failed to create NewMultipartUpload, abort.
		t.Fatalf("%s : %s", instanceType, err)
	}

	uploadIDs = append(uploadIDs, res.UploadID)
	// Parts with size greater than 5 MiB.
	// Generating a 6MiB byte array.
	validPart := bytes.Repeat([]byte("abcdef"), 1*humanize.MiByte)
	validPartMD5 := getMD5Hash(validPart)
	// Create multipart parts.

  # chunk size of 5MB per write request.
  buffer_chunk_limit 512k
  # Cap the combined memory usage of this buffer and the one below to
  # 512KiB/chunk * (6 + 2) chunks = 4 MiB
  buffer_queue_limit 6
  # Never wait more than 5 seconds before flushing logs in the non-error case.
  flush_interval 5s
  # Never wait longer than 30 seconds between retries.
  max_retry_wait 30

	assertLockHeld(&h.lock)

	// We must grow the heap in whole palloc chunks.
	// We call sysMap below but note that because we
	// round up to pallocChunkPages which is on the order
	// of MiB (generally >= to the huge page size) we
	// won't be calling it too much.
	ask := alignUp(npage, pallocChunkPages) * pageSize

	totalGrowth := uintptr(0)
	// This may overflow because ask could be very large

            override fun contentType(): MediaType? {
              return null
            }

            override fun writeTo(sink: BufferedSink) {
              val data = ByteArray(2 * 1024 * 1024) // 2 MiB.
              sink.write(data)
            }
          },
      )
    assertFailsWith<SocketTimeoutException> {
      getResponse(request)
    }
  }

  @Test