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authorDaniel Stenberg <daniel@haxx.se>2017-04-24 12:03:08 +0200
committerDaniel Stenberg <daniel@haxx.se>2017-04-25 11:02:19 +0200
commit96ece5c0eef0ca4953ec306e59fd7aa8d48be793 (patch)
tree6b8296148514134964e4a54de4796be40eb8c04f /src
parente698b822877898c44f0ee809b17aff8437674128 (diff)
curl: set a 100K buffer size by default
Test command 'time curl http://localhost/80GB -so /dev/null' on a Debian Linux. Before (middle performing run out 9): real 0m28.078s user 0m11.240s sys 0m12.876s After (middle performing run out 9) real 0m26.356s (93.9%) user 0m5.324s (47.4%) sys 0m8.368s (65.0%) Also, doing SFTP over a 200 millsecond latency link is now about 6 times faster. Closes #1446
Diffstat (limited to 'src')
-rw-r--r--src/tool_operate.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/tool_operate.c b/src/tool_operate.c
index 0e84ac398..724826c8e 100644
--- a/src/tool_operate.c
+++ b/src/tool_operate.c
@@ -246,6 +246,8 @@ static void setfiletime(long filetime, const char *filename,
#endif /* defined(HAVE_UTIME) || \
(defined(WIN32) && (CURL_SIZEOF_CURL_OFF_T >= 8)) */
+#define BUFFER_SIZE (100*1024)
+
static CURLcode operate_do(struct GlobalConfig *global,
struct OperationConfig *config)
{
@@ -888,10 +890,12 @@ static CURLcode operate_do(struct GlobalConfig *global,
my_setopt(curl, CURLOPT_SEEKDATA, &input);
my_setopt(curl, CURLOPT_SEEKFUNCTION, tool_seek_cb);
- if(config->recvpersecond)
- /* tell libcurl to use a smaller sized buffer as it allows us to
- make better sleeps! 7.9.9 stuff! */
+ if(config->recvpersecond &&
+ (config->recvpersecond < BUFFER_SIZE))
+ /* use a smaller sized buffer for better sleeps */
my_setopt(curl, CURLOPT_BUFFERSIZE, (long)config->recvpersecond);
+ else
+ my_setopt(curl, CURLOPT_BUFFERSIZE, (long)BUFFER_SIZE);
/* size of uploaded file: */
if(uploadfilesize != -1)