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[core] perf: adjust max h2 stream send increment 

subtract 9 byte HTTP/2 frame overhead from each 16k DATA
frame for more efficient sending of large files
personal/stbuehler/tests-path
Glenn Strauss 2022-08-04 16:41:25 -04:00
parent 971773f1fa
commit 7b953c337a
1 changed files with 3 additions and 1 deletions
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4
src/connections.c
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@ -1247,9 +1247,11 @@ connection_state_machine_h2 (connection * const con)
|| (r->conf.stream_response_body
& (FDEVENT_STREAM_RESPONSE
|FDEVENT_STREAM_RESPONSE_BUFMIN)))) {
/*(subtract 9 byte HTTP/2 frame overhead from each 16k DATA
* frame for more efficient sending of large files)*/
/*(use smaller max per stream if marked 'incremental' (w/ 0)
* to give more streams a chance to send in parallel)*/
uint32_t dlen = (r->h2_prio & 1) ? 32768 : 8192;
uint32_t dlen = (r->h2_prio & 1) ? 32768-18 : 8192;
if (dlen > (uint32_t)max_bytes) dlen = (uint32_t)max_bytes;
dlen = h2_send_cqdata(r, con, &r->write_queue, dlen);
if (dlen) { /*(do not resched (spin) if swin empty window)*/