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Code Issues Releases Wiki Activity

Refine GSO for RTC

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This commit is contained in:
winlin 2020-04-14 10:05:55 +08:00
parent 8a71ce62db
commit 23c68a922c
1 changed files with 50 additions and 44 deletions
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94
trunk/src/app/srs_app_rtc_conn.cpp
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@ -947,7 +947,21 @@ srs_error_t SrsRtcSenderThread::send_packets2(SrsUdpMuxSocket* skt, SrsRtcPacket
}
// For last message, or final gso, or determined not using GSO, send it now.
if (i == nn_packets - 1 || gso_final || !use_gso) {
bool do_send = (i == nn_packets - 1 || gso_final || !use_gso);
#if defined(SRS_DEBUG)
srs_trace("packet SSRC=%d, SN=%d, %d bytes", packet->rtp_header.get_ssrc(),
packet->rtp_header.get_sequence(), nn_packet);
if (do_send) {
for (int j = 0; j < (int)mhdr->msg_hdr.msg_iovlen; j++) {
iovec* iov = mhdr->msg_hdr.msg_iov + j;
srs_trace("%s #%d/%d/%d, %d bytes, size %d/%d", (use_gso? "GSO":"RAW"), j, gso_cursor + 1,
mhdr->msg_hdr.msg_iovlen, iov->iov_len, gso_size, gso_encrypt);
}
}
#endif
if (do_send) {
sockaddr_in* addr = (sockaddr_in*)skt->peer_addr();
socklen_t addrlen = (socklen_t)skt->peer_addrlen();
@ -978,15 +992,6 @@ srs_error_t SrsRtcSenderThread::send_packets2(SrsUdpMuxSocket* skt, SrsRtcPacket
return srs_error_wrap(err, "send msghdr");
}
#ifdef SRS_DEBUG
srs_warn("packet SN=%d %d bytes", nn_packet, packet->rtp_header.get_sequence());
for (int j = 0; j < (int)mhdr->msg_hdr.msg_iovlen; j++) {
iovec* iov = mhdr->msg_hdr.msg_iov + j;
srs_warn("%s #%d/%d/%d, %d bytes, size %d/%d", (use_gso? "GSO":"RAW"), j, gso_cursor + 1,
mhdr->msg_hdr.msg_iovlen, iov->iov_len, gso_size, gso_encrypt);
}
#endif
// Reset the GSO flag.
gso_mhdr = NULL; gso_size = 0; gso_encrypt = 0; gso_cursor = 0;
use_gso = gso_final = false;
@ -1847,6 +1852,41 @@ srs_error_t SrsUdpMuxSender::cycle()
gso_cache_pos = 0;
}
// Collect informations for GSO
if (!gso_dedicated && pos > 0) {
// For shared GSO cache, stat the messages.
mmsghdr* p = &hotspot[0]; mmsghdr* end = p + pos;
for (p = &hotspot[0]; p < end; p++) {
if (!p->msg_len) {
continue;
}
// Private message, use it to store the cursor.
int real_iovs = p->msg_len;
p->msg_len = 0;
gso_pos++; nn_gso_msgs++; nn_gso_iovs += real_iovs; gso_iovs += real_iovs;
stat->perf_gso_on_packets(real_iovs);
}
}
// Send out all messages, may GSO if shared cache.
if (false && pos > 0) {
// Send out all messages.
mmsghdr* p = &hotspot[0]; mmsghdr* end = p + pos;
for (p = &hotspot[0]; p < end; p += max_sendmmsg) {
int vlen = (int)(end - p);
vlen = srs_min(max_sendmmsg, vlen);
int r0 = srs_sendmmsg(lfd, p, (unsigned int)vlen, 0, SRS_UTIME_NO_TIMEOUT);
if (r0 != vlen) {
srs_warn("sendmmsg %d msgs, %d done", vlen, r0);
}
stat->perf_sendmmsg_on_packets(vlen);
}
}
// Send out GSO in dedicated queue.
if (gso_dedicated && gso_pos > 0) {
mmsghdr* p = &gso_hotspot[0]; mmsghdr* end = p + gso_pos;
@ -1866,40 +1906,6 @@ srs_error_t SrsUdpMuxSender::cycle()
}
}
// Send out all messages, may GSO if shared cache.
if (pos > 0) {
mmsghdr* p = &hotspot[0]; mmsghdr* end = p + pos;
// For shared GSO cache, stat the messages.
if (!gso_dedicated) {
for (p = &hotspot[0]; p < end; p++) {
if (!p->msg_len) {
continue;
}
// Private message, use it to store the cursor.
int real_iovs = p->msg_len;
p->msg_len = 0;
gso_pos++; nn_gso_msgs++; nn_gso_iovs += real_iovs; gso_iovs += real_iovs;
stat->perf_gso_on_packets(real_iovs);
}
}
// Send out all messages.
for (p = &hotspot[0]; p < end; p += max_sendmmsg) {
int vlen = (int)(end - p);
vlen = srs_min(max_sendmmsg, vlen);
int r0 = srs_sendmmsg(lfd, p, (unsigned int)vlen, 0, SRS_UTIME_NO_TIMEOUT);
if (r0 != vlen) {
srs_warn("sendmmsg %d msgs, %d done", vlen, r0);
}
stat->perf_sendmmsg_on_packets(vlen);
}
}
// Increase total messages.
int nn_pos = pos;
if (gso_dedicated) {