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Make sure the socket send buffer is at least 64KB. This reduces the number of

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writev(2) system calls made for largish requests.  A similar change was made
to the libxtrans code a while ago.  This should speed up applications that
send images to the X server, like Firefox.  The seedupmight not be noticable
though.  But it reduces the noice in ktrace logs.

ok matthieu@
This commit is contained in:
kettenis
2016-02-02 18:42:22 +00:00
parent 3d311121d5
commit 78eb73e438
1 changed files with 7 additions and 0 deletions
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7
dist/libxcb/src/xcb_util.c vendored
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@@ -428,6 +428,8 @@ static int _xcb_open_unix(char *protocol, const char *file)
{
int fd;
struct sockaddr_un addr;
socklen_t len = sizeof(int);
int val;
if (protocol && strcmp("unix",protocol))
return -1;
@@ -440,6 +442,11 @@ static int _xcb_open_unix(char *protocol, const char *file)
fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
if(fd == -1)
return -1;
if(getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &val, &len) == 0 && val < 64 * 1024)
{
val = 64 * 1024;
setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &val, sizeof(int));
}
if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
close(fd);
return -1;