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Remove priority adjustment for a DATA frame

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Simply it does not work as expected.
This commit is contained in:
Tatsuhiro Tsujikawa 2013-08-09 21:21:14 +09:00
parent f5b1974473
commit 0dec04921d
2 changed files with 0 additions and 41 deletions
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16
lib/nghttp2_outbound_item.h
View File

@ -34,10 +34,6 @@
/* Priority for PING */
#define NGHTTP2_OB_PRI_PING -10
/* Priority for CREDENTIAL */
#define NGHTTP2_OB_PRI_CREDENTIAL -2
/* Priority for the frame which must be sent after CREDENTIAL */
#define NGHTTP2_OB_PRI_AFTER_CREDENTIAL -1
typedef struct {
nghttp2_data_provider *data_prd;
@ -50,19 +46,7 @@ typedef struct {
nghttp2_frame_category frame_cat;
void *frame;
void *aux_data;
/* Initial priority of this item */
int inipri;
/* The current priority of this item. Initially, pri equals to
inipri. The item is chosen from the queue based on pri and
seq. For control frames, they consist of just 1 frame and pri
does not change. For DATA frame, they could split up to several
frames. After sending a frame, the pri becomes |inipri| +
|pridecay| and |pridecay| is multiplied by 2. If it becomes more
than lowest priority, then it returns back to |inipri| and do the
same sequence again and again. By doing this, the higher priority
long DATA frames don't starve the lower prioritized streams. */
int pri;
uint32_t pridecay;
int64_t seq;
} nghttp2_outbound_item;

25
lib/nghttp2_session.c
View File

@ -415,8 +415,6 @@ int nghttp2_session_add_frame(nghttp2_session *session,
free(item);
return r;
}
item->inipri = item->pri;
item->pridecay = 1;
return 0;
}
@ -1193,28 +1191,6 @@ nghttp2_outbound_item* nghttp2_session_pop_next_ob_item
}
}
/*
* Adjust priority of item so that the higher priority long DATA
* frames don't starve lower priority streams.
*/
static void nghttp2_outbound_item_adjust_pri(nghttp2_session *session,
nghttp2_outbound_item *item)
{
if(item->pri == NGHTTP2_PRI_LOWEST) {
nghttp2_stream *stream;
stream = nghttp2_session_get_stream
(session, nghttp2_outbound_item_get_data_frame(item)->hd.stream_id);
assert(stream);
item->pri = item->inipri = stream->pri;
item->pridecay = 1;
} else if(item->pri + item->pridecay > NGHTTP2_PRI_LOWEST) {
item->pri = NGHTTP2_PRI_LOWEST;
} else {
item->pri = item->inipri + item->pridecay;
item->pridecay *= 2;
}
}
/*
* Called after a frame is sent.
*
@ -1368,7 +1344,6 @@ static int nghttp2_session_after_frame_sent(nghttp2_session *session)
} else {
nghttp2_outbound_item* next_item;
next_item = nghttp2_session_get_next_ob_item(session);
nghttp2_outbound_item_adjust_pri(session, session->aob.item);
/* If priority of this stream is higher or equal to other stream
waiting at the top of the queue, we continue to send this
data. */