From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 9D4182018B for ; Mon, 18 Jul 2016 18:37:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751560AbcGRShU (ORCPT ); Mon, 18 Jul 2016 14:37:20 -0400 Received: from mail-pa0-f53.google.com ([209.85.220.53]:35697 "EHLO mail-pa0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751499AbcGRShS (ORCPT ); Mon, 18 Jul 2016 14:37:18 -0400 Received: by mail-pa0-f53.google.com with SMTP id iw10so897951pac.2 for ; Mon, 18 Jul 2016 11:37:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=eUVUdop6rWcEwsT5fM2m25SkXRsEJ+Y9NbjhXIZXlt4=; b=QmouHbEDPQrZVZHzzcCCot7P3Vv3IkJX7bInukqHbFkB+aVPg8DPSd+jta7X4eM15Y aPJHTuGC5dIiQmwmPL6ikWoto4qzNZQOY+fhjQr97qOgXRBfk7OK9keJeItSyrCm8AnT I2+YTkiD35yVrfvdj/n//tiiJx8Az4DEI+ndf8WXUXQY0pvG30xTp8WO+VfrHaGJGoZ/ HaDZl3IDX7EVSk9Hb1Ja9H9KDwtiy9/7ZeHLEzvkJAUTSyrCDJxauu50btHr5FEjwll/ GYDgNCLEJLUtoCBCup8Vtf8k0/aywdpmFSpcgWNBY1Mbo0iFIxadC3eLJBY7T2j3mAB+ OfdA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=eUVUdop6rWcEwsT5fM2m25SkXRsEJ+Y9NbjhXIZXlt4=; b=kfkM9YmkLH8xtqd+E3FWMgCQFMGJN3UmTz9HD6xmueHgQxFJxooKnC4EMNbHNBWV0h q1vo2ATzSw/IIFvLta7AvEE1+kLNi2OyuAfsZYEbuSFlquu76lV3WIBZQj7qXXgKD+Nn 6YdcvX+BYyZUSAe4rnSWIL32VP6rQ9u4IVm6LHMDVGdIkSsRxdJ5gf66Pr5uO/AWhxLf S7SiTuUcS5vO4fQ4WhDPTqz+xToLtzhVTF4CuTZKKx+WJx6opSsPqaIkUMzD18KCh7Rc dxmJ1eVPq40oGTx0NwaDf5Id+/ro51hPTBMQU0+U3sRZCPE15yr0HazRD6HTE8HNTN8O IROQ== X-Gm-Message-State: ALyK8tLwW1+DS14V0etiB22l1cZ3loEe6Yc/MFXnp+JonIHZYxEktjJP9/C5/tGDFx206JjO X-Received: by 10.67.8.69 with SMTP id di5mr57939620pad.123.1468867037159; Mon, 18 Jul 2016 11:37:17 -0700 (PDT) Received: from twelve2.mtv.corp.google.com ([172.17.54.68]) by smtp.gmail.com with ESMTPSA id h66sm6671700pfe.58.2016.07.18.11.37.15 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 18 Jul 2016 11:37:15 -0700 (PDT) From: Jonathan Tan To: git@vger.kernel.org Cc: Jonathan Tan , jrnieder@gmail.com, sbeller@google.com Subject: [PATCH] fetch-pack: grow stateless RPC windows exponentially Date: Mon, 18 Jul 2016 11:36:59 -0700 Message-Id: <1468867019-13086-1-git-send-email-jonathantanmy@google.com> X-Mailer: git-send-email 2.8.0.rc3.226.g39d4020 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org When updating large repositories, the LARGE_FLUSH limit (that is, the limit at which the window growth strategy switches from exponential to linear) is reached quite quickly. Use a conservative exponential growth strategy when that limit is reached instead. This optimization is only applied during stateless RPCs to avoid the issue raised and fixed in commit 44d8dc54e73e8010c4bdf57a422fc8d5ce709029. Signed-off-by: Jonathan Tan --- fetch-pack.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fetch-pack.c b/fetch-pack.c index b501d5c..3fcbda2 100644 --- a/fetch-pack.c +++ b/fetch-pack.c @@ -251,6 +251,8 @@ static int next_flush(struct fetch_pack_args *args, int count) if (count < flush_limit) count <<= 1; + else if (args->stateless_rpc && count >= flush_limit * 10) + count = count * 11 / 10; else count += flush_limit; return count; -- 2.8.0.rc3.226.g39d4020