[pbs-devel] [PATCH proxmox-backup] improve server->client tcp performance for high latency links

[Dominik Csapak <d.csapak@proxmox.com>]

similar to the other fix, if we do not set the buffer size manually,
we get better performance for high latency connections

restore benchmark from f.gruenbicher:

no delay, without patch: ~50MB/s
no delay, with patch: ~50MB/s
25ms delay, without patch: ~11MB/s
25ms delay, with path: ~50MB/s

my own restore benchmark:

no delay, without patch: ~1.5GiB/s
no delay, with patch: ~1.5GiB/s
25ms delay, without patch: 30MiB/s
25ms delay, with patch: ~950MiB/s

for some more details about those benchmarks see
https://lists.proxmox.com/pipermail/pbs-devel/2020-September/000600.html

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 src/client/http_client.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/client/http_client.rs b/src/client/http_client.rs
index dd457c12..ae3704d6 100644
--- a/src/client/http_client.rs
+++ b/src/client/http_client.rs
@@ -292,7 +292,6 @@ impl HttpClient {
 
         let mut httpc = hyper::client::HttpConnector::new();
         httpc.set_nodelay(true); // important for h2 download performance!
-        httpc.set_recv_buffer_size(Some(1024*1024)); //important for h2 download performance!
         httpc.enforce_http(false); // we want https...
 
         let https = HttpsConnector::with_connector(httpc, ssl_connector_builder.build());
-- 
2.20.1