tree 12547538508204e1de141cd85e615b20c6e77623
parent c63ef427a2b18d318b313a4adf6267bb4dfa0c1c
author Michael Brown <mcb30@ipxe.org> 1565647101 +0100
committer Michael Brown <mcb30@ipxe.org> 1565647558 +0100

[peerdist] Reduce number of concurrent requests to origin server

Origin server requests are likely to be significantly more expensive
than local peer requests: they consume sparse uplink bandwidth and, if
using HTTPS, substantial local resources.

Start with a low number of concurrent block downloads and adjust this
number in response to the availability of local peers, in order to
avoid hammering the origin server with the full concurrency limit.

Signed-off-by: Michael Brown <mcb30@ipxe.org>