From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Fri, 2 Jun 2006 08:46:34 +0000 (+0000)
Subject: Lionel Fourquaux offers this very simple patch to speed up SFTP,
X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/commitdiff_plain/6cc1b78c02d74f9432e719d2e3e79b42d00e119e

Lionel Fourquaux offers this very simple patch to speed up SFTP,
simply by upping the packet sizes and maximum in-flight packet
count. Got to be worth a try, I think!


git-svn-id: svn://svn.tartarus.org/sgt/putty@6722 cda61777-01e9-0310-a592-d414129be87e
---

diff --git a/pscp.c b/pscp.c
index 9df19637..5792c3ed 100644
--- a/pscp.c
+++ b/pscp.c
@@ -1887,10 +1887,10 @@ static void sink(char *targ, char *src)
 
 	received = 0;
 	while (received < act.size) {
-	    char transbuf[4096];
+	    char transbuf[32768];
 	    unsigned long blksize;
 	    int read;
-	    blksize = 4096;
+	    blksize = 32768;
 	    if (blksize > (act.size - received))
 		blksize = act.size - received;
 	    read = scp_recv_filedata(transbuf, (int)blksize);
diff --git a/sftp.c b/sftp.c
index a30b2428..58b8e3e9 100644
--- a/sftp.c
+++ b/sftp.c
@@ -1129,7 +1129,7 @@ static struct fxp_xfer *xfer_init(struct fxp_handle *fh, uint64 offset)
     xfer->offset = offset;
     xfer->head = xfer->tail = NULL;
     xfer->req_totalsize = 0;
-    xfer->req_maxsize = 16384;
+    xfer->req_maxsize = 1048576;
     xfer->err = 0;
     xfer->filesize = uint64_make(ULONG_MAX, ULONG_MAX);
     xfer->furthestdata = uint64_make(0, 0);
@@ -1169,7 +1169,7 @@ void xfer_download_queue(struct fxp_xfer *xfer)
 	xfer->tail = rr;
 	rr->next = NULL;
 
-	rr->len = 4096;
+	rr->len = 32768;
 	rr->buffer = snewn(rr->len, char);
 	sftp_register(req = fxp_read_send(xfer->fh, rr->offset, rr->len));
 	fxp_set_userdata(req, rr);