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Libraries
nghttp2
Commits
0dc7fee7
Commit
0dc7fee7
authored
Nov 04, 2015
by
Tatsuhiro Tsujikawa
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h2load: Print "space savings" to measure header compression efficiency
parent
58d636ab
Changes
6
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6 changed files
with
41 additions
and
13 deletions
+41
-13
doc/h2load.h2r
doc/h2load.h2r
+8
-4
src/h2load.cc
src/h2load.cc
+12
-4
src/h2load.h
src/h2load.h
+5
-1
src/h2load_http1_session.cc
src/h2load_http1_session.cc
+2
-0
src/h2load_http2_session.cc
src/h2load_http2_session.cc
+4
-1
src/h2load_spdy_session.cc
src/h2load_spdy_session.cc
+10
-3
No files found.
doc/h2load.h2r
View file @
0dc7fee7
...
...
@@ -34,9 +34,13 @@ traffic
bytes.
headers
The number of response header bytes from the server without
decompression. For HTTP/2, this is the sum of the payload of
HEADERS frame. For SPDY, this is the sum of the payload of
SYN_REPLY frame.
decompression. The ``space savings`` shows efficiency of header
compression. Let ``decompressed(headers)`` to the number of bytes
used for header fields after decompression. The ``space savings``
is calculated by (1 - ``headers`` / ``decompressed(headers)``) *
100. For HTTP/1.1, this is usually 0.00%, since it does not have
header compression. For HTTP/2 and SPDY, it shows some insightful
numbers.
data
The number of response body bytes received from the server.
...
...
src/h2load.cc
View file @
0dc7fee7
...
...
@@ -95,8 +95,8 @@ RequestStat::RequestStat() : data_offset(0), completed(false) {}
Stats
::
Stats
(
size_t
req_todo
)
:
req_todo
(
0
),
req_started
(
0
),
req_done
(
0
),
req_success
(
0
),
req_status_success
(
0
),
req_failed
(
0
),
req_error
(
0
),
req_timedout
(
0
),
bytes_total
(
0
),
bytes_head
(
0
),
bytes_
body
(
0
),
status
(
),
req_stats
(
req_todo
)
{}
bytes_total
(
0
),
bytes_head
(
0
),
bytes_
head_decomp
(
0
),
bytes_body
(
0
),
status
(),
req_stats
(
req_todo
)
{}
Stream
::
Stream
()
:
status_success
(
-
1
)
{}
...
...
@@ -2073,6 +2073,7 @@ int main(int argc, char **argv) {
stats
.
req_error
+=
s
.
req_error
;
stats
.
bytes_total
+=
s
.
bytes_total
;
stats
.
bytes_head
+=
s
.
bytes_head
;
stats
.
bytes_head_decomp
+=
s
.
bytes_head_decomp
;
stats
.
bytes_body
+=
s
.
bytes_body
;
for
(
size_t
i
=
0
;
i
<
stats
.
status
.
size
();
++
i
)
{
...
...
@@ -2102,7 +2103,13 @@ int main(int argc, char **argv) {
bps
=
stats
.
bytes_total
/
secd
.
count
();
}
std
::
cout
<<
R"(
double
header_space_savings
=
0.
;
if
(
stats
.
bytes_head_decomp
>
0
)
{
header_space_savings
=
1.
-
static_cast
<
double
>
(
stats
.
bytes_head
)
/
stats
.
bytes_head_decomp
;
}
std
::
cout
<<
std
::
fixed
<<
std
::
setprecision
(
2
)
<<
R"(
finished in )"
<<
util
::
format_duration
(
duration
)
<<
", "
<<
rps
<<
" req/s, "
<<
util
::
utos_with_funit
(
bps
)
<<
R"(B/s
requests: )"
<<
stats
.
req_todo
<<
" total, "
<<
stats
.
req_started
...
...
@@ -2113,7 +2120,8 @@ requests: )" << stats.req_todo << " total, " << stats.req_started
status codes: )"
<<
stats
.
status
[
2
]
<<
" 2xx, "
<<
stats
.
status
[
3
]
<<
" 3xx, "
<<
stats
.
status
[
4
]
<<
" 4xx, "
<<
stats
.
status
[
5
]
<<
R"( 5xx
traffic: )"
<<
stats
.
bytes_total
<<
" bytes total, "
<<
stats
.
bytes_head
<<
" bytes headers, "
<<
stats
.
bytes_body
<<
R"( bytes data
<<
" bytes headers (space savings "
<<
header_space_savings
*
100
<<
"%), "
<<
stats
.
bytes_body
<<
R"( bytes data
min max mean sd +/- sd
time for request: )"
<<
std
::
setw
(
10
)
<<
util
::
format_duration
(
ts
.
request
.
min
)
<<
" "
<<
std
::
setw
(
10
)
<<
util
::
format_duration
(
ts
.
request
.
max
)
...
...
src/h2load.h
View file @
0dc7fee7
...
...
@@ -166,8 +166,12 @@ struct Stats {
// The number of bytes received on the "wire". If SSL/TLS is used,
// this is the number of decrypted bytes the application received.
int64_t
bytes_total
;
// The number of bytes received in HEADERS frame payload.
// The number of bytes received for header fields. This is
// compressed version.
int64_t
bytes_head
;
// The number of bytes received for header fields after they are
// decompressed.
int64_t
bytes_head_decomp
;
// The number of bytes received in DATA frame.
int64_t
bytes_body
;
// The number of each HTTP status category, status[i] is status code
...
...
src/h2load_http1_session.cc
View file @
0dc7fee7
...
...
@@ -99,6 +99,7 @@ int htp_hdr_keycb(http_parser *htp, const char *data, size_t len) {
auto
client
=
session
->
get_client
();
client
->
worker
->
stats
.
bytes_head
+=
len
;
client
->
worker
->
stats
.
bytes_head_decomp
+=
len
;
return
0
;
}
}
// namespace
...
...
@@ -109,6 +110,7 @@ int htp_hdr_valcb(http_parser *htp, const char *data, size_t len) {
auto
client
=
session
->
get_client
();
client
->
worker
->
stats
.
bytes_head
+=
len
;
client
->
worker
->
stats
.
bytes_head_decomp
+=
len
;
return
0
;
}
}
// namespace
...
...
src/h2load_http2_session.cc
View file @
0dc7fee7
...
...
@@ -51,6 +51,7 @@ int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
return
0
;
}
client
->
on_header
(
frame
->
hd
.
stream_id
,
name
,
namelen
,
value
,
valuelen
);
client
->
worker
->
stats
.
bytes_head_decomp
+=
namelen
+
valuelen
;
return
0
;
}
}
// namespace
...
...
@@ -63,7 +64,9 @@ int on_frame_recv_callback(nghttp2_session *session, const nghttp2_frame *frame,
frame
->
headers
.
cat
!=
NGHTTP2_HCAT_RESPONSE
)
{
return
0
;
}
client
->
worker
->
stats
.
bytes_head
+=
frame
->
hd
.
length
;
client
->
worker
->
stats
.
bytes_head
+=
frame
->
hd
.
length
-
frame
->
headers
.
padlen
-
((
frame
->
hd
.
flags
&
NGHTTP2_FLAG_PRIORITY
)
?
5
:
0
);
if
(
frame
->
hd
.
flags
&
NGHTTP2_FLAG_END_STREAM
)
{
client
->
record_ttfb
();
}
...
...
src/h2load_spdy_session.cc
View file @
0dc7fee7
...
...
@@ -65,11 +65,18 @@ void on_ctrl_recv_callback(spdylay_session *session, spdylay_frame_type type,
for
(
auto
p
=
frame
->
syn_reply
.
nv
;
*
p
;
p
+=
2
)
{
auto
name
=
*
p
;
auto
value
=
*
(
p
+
1
);
auto
namelen
=
strlen
(
name
);
auto
valuelen
=
strlen
(
value
);
client
->
on_header
(
frame
->
syn_reply
.
stream_id
,
reinterpret_cast
<
const
uint8_t
*>
(
name
),
strlen
(
name
),
reinterpret_cast
<
const
uint8_t
*>
(
value
),
strlen
(
value
));
reinterpret_cast
<
const
uint8_t
*>
(
name
),
namelen
,
reinterpret_cast
<
const
uint8_t
*>
(
value
),
valuelen
);
client
->
worker
->
stats
.
bytes_head_decomp
+=
namelen
+
valuelen
;
}
client
->
worker
->
stats
.
bytes_head
+=
frame
->
syn_reply
.
hd
.
length
;
// Strictly speaking, we have to subtract 2 (unused field) if SPDY
// version is 2. But it is already deprecated, and we don't do
// extra work for it.
client
->
worker
->
stats
.
bytes_head
+=
frame
->
syn_reply
.
hd
.
length
-
4
;
if
(
frame
->
syn_stream
.
hd
.
flags
&
SPDYLAY_CTRL_FLAG_FIN
)
{
client
->
record_ttfb
();
...
...
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