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Increase net read buffer for web scale performance!

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This commit is contained in:
Marcel Hellkamp 2018-03-29 15:26:15 +02:00
parent a80c3876c7
commit 0f9305c5ac
1 changed files with 18 additions and 9 deletions
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21
pixelnuke/net.c
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@ -17,7 +17,13 @@
#include "net.h"
#define MAX_LINE 128
// Lines longer than this are considered an error.
#define NET_MAX_LINE 1024
// The server buffers up to NET_READ_BUFFER bytes per client connection.
// Lower values allow lots of clients to draw at the same time, each with a fair share.
// Higher values increase throughput but fast clients might be able to draw large batches at once.
#define NET_MAX_BUFFER 10240
typedef struct NetClient {
int sock_fd;
@ -49,13 +55,13 @@ static void netev_on_read(struct bufferevent *bev, void *ctx) {
input = bufferevent_get_input(bev);
if ((line = evbuffer_readln(input, &n, EVBUFFER_EOL_LF))) {
if(netcb_on_read)
// Change while->if for less throughput but more fair pixel distribution across client connections.
while ((line = evbuffer_readln(input, &n, EVBUFFER_EOL_LF))) {
(*netcb_on_read)(client, line);
free(line);
}
if (evbuffer_get_length(input) >= MAX_LINE) {
if (evbuffer_get_length(input) >= NET_MAX_LINE) {
net_err(client, "Line to long");
}
}
@ -112,7 +118,7 @@ static void on_accept(evutil_socket_t listener, short event, void *arg) {
evutil_make_socket_nonblocking(fd);
bufferevent_setcb(client->buf_ev, netev_on_read, netev_on_write, netev_on_error, client);
bufferevent_setwatermark(client->buf_ev, EV_READ, 0, MAX_LINE);
bufferevent_setwatermark(client->buf_ev, EV_READ, 0, NET_MAX_BUFFER);
if(netcb_on_connect)
(*netcb_on_connect)(client);
@ -142,13 +148,14 @@ void net_start(int port, net_on_connect on_connect, net_on_read on_read, net_on_
if (!base)
err(1, "Failed to create event_base");
evthread_make_base_notifiable(base);
//evthread_make_base_notifiable(base);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = 0;
sin.sin_port = htons(1337);
listener = socket(AF_INET, SOCK_STREAM, 0);
evutil_make_socket_nonblocking(listener);
evutil_make_listen_socket_reuseable(listener);
if (bind(listener, (struct sockaddr*) &sin, sizeof(sin)) < 0) {
err(1, "bind failed");
@ -177,9 +184,11 @@ void net_send(NetClient *client, const char * msg) {
}
void net_close(NetClient *client) {
if(client->state == NET_CSTATE_OPEN) {
client->state = NET_CSTATE_CLOSING;
bufferevent_disable(client->buf_ev, EV_READ);
}
}
void net_err(NetClient *client, const char * msg) {
struct evbuffer *output = bufferevent_get_output(client->buf_ev);