fetch-pack: use smaller handshake window for initial request
Start the initial request small by halving the INITIAL_FLUSH (we will try to stay one window ahead of the server, so we would end up giving twice as many "have" in flight at the very beginning). We may want to tweak these values even more, taking MTU into account. Signed-off-by: Junio C Hamano <gitster@pobox.com> Acked-by: Shawn Pearce <spearce@spearce.org>
Junio C Hamano committed
Mar 20, 2011 at 21:52 UTC
066bf4c2e43c7fb40405843e49f809431314865d
1 file changed
+4
-2
builtin/fetch-pack.c
+4
-2
@@ -218,12 +218,14 @@ static void send_request(int fd, struct strbuf *buf)
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safe_write(fd, buf->buf, buf->len);
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}
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-#define INITIAL_FLUSH 32
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+#define INITIAL_FLUSH 16
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#define LARGE_FLUSH 1024
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static int next_flush(int count)
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{
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- if (count < LARGE_FLUSH)
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+ if (count < INITIAL_FLUSH * 2)
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+ count += INITIAL_FLUSH;
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+ else if (count < LARGE_FLUSH)
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count <<= 1;
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else
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count += LARGE_FLUSH;