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Introduce max_queued_clients

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This configuration knob lets user to set the length of queue of
connection requests waiting to be accept()-ed by the daemon. IOW, it
just controls the @backlog passed to listen:

  int listen(int sockfd, int backlog);
This commit is contained in:
Michal Privoznik 2013-07-25 14:45:38 +02:00
parent 2737aaafe9
commit 1199edb1d4
9 changed files with 21 additions and 3 deletions
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1
daemon/libvirtd-config.c
View File

@ -414,6 +414,7 @@ daemonConfigLoadOptions(struct daemonConfig *data,
GET_CONF_INT(conf, filename, min_workers);
GET_CONF_INT(conf, filename, max_workers);
GET_CONF_INT(conf, filename, max_clients);
GET_CONF_INT(conf, filename, max_queued_clients);
GET_CONF_INT(conf, filename, prio_workers);

1
daemon/libvirtd-config.h
View File

@ -63,6 +63,7 @@ struct daemonConfig {
int min_workers;
int max_workers;
int max_clients;
int max_queued_clients;
int prio_workers;

1
daemon/libvirtd.aug
View File

@ -56,6 +56,7 @@ module Libvirtd =
let processing_entry = int_entry "min_workers"
| int_entry "max_workers"
| int_entry "max_clients"
| int_entry "max_queued_clients"
| int_entry "max_requests"
| int_entry "max_client_requests"
| int_entry "prio_workers"

4
daemon/libvirtd.c
View File

@ -485,6 +485,7 @@ static int daemonSetupNetworking(virNetServerPtr srv,
NULL,
#endif
false,
config->max_queued_clients,
config->max_client_requests)))
goto error;
if (sock_path_ro) {
@ -497,6 +498,7 @@ static int daemonSetupNetworking(virNetServerPtr srv,
NULL,
#endif
true,
config->max_queued_clients,
config->max_client_requests)))
goto error;
}
@ -522,6 +524,7 @@ static int daemonSetupNetworking(virNetServerPtr srv,
NULL,
#endif
false,
config->max_queued_clients,
config->max_client_requests)))
goto error;
@ -562,6 +565,7 @@ static int daemonSetupNetworking(virNetServerPtr srv,
config->auth_tls,
ctxt,
false,
config->max_queued_clients,
config->max_client_requests))) {
virObjectUnref(ctxt);
goto error;

6
daemon/libvirtd.conf
View File

@ -257,6 +257,12 @@
# over all sockets combined.
#max_clients = 20
# The maximum length of queue of connections waiting to be
# accepted by the daemon. Note, that some protocols supporting
# retransmission may obey this so that a later reattempt at
# connection succeeds.
#max_queued_clients = 1000
# The minimum limit sets the number of workers to start up
# initially. If the number of active clients exceeds this,

2
src/locking/lock_daemon.c
View File

@ -671,7 +671,7 @@ virLockDaemonSetupNetworkingNative(virNetServerPtr srv, const char *sock_path)
#if WITH_GNUTLS
NULL,
#endif
false, 1)))
false, 0, 1)))
return -1;
if (virNetServerAddService(srv, svc, NULL) < 0) {

1
src/lxc/lxc_controller.c
View File

@ -745,6 +745,7 @@ static int virLXCControllerSetupServer(virLXCControllerPtr ctrl)
NULL,
#endif
false,
0,
5)))
goto error;

6
src/rpc/virnetserverservice.c
View File

@ -97,6 +97,7 @@ virNetServerServicePtr virNetServerServiceNewTCP(const char *nodename,
virNetTLSContextPtr tls,
#endif
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max)
{
virNetServerServicePtr svc;
@ -122,7 +123,7 @@ virNetServerServicePtr virNetServerServiceNewTCP(const char *nodename,
goto error;
for (i = 0; i < svc->nsocks; i++) {
if (virNetSocketListen(svc->socks[i], 0) < 0)
if (virNetSocketListen(svc->socks[i], max_queued_clients) < 0)
goto error;
/* IO callback is initially disabled, until we're ready
@ -155,6 +156,7 @@ virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
virNetTLSContextPtr tls,
#endif
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max)
{
virNetServerServicePtr svc;
@ -185,7 +187,7 @@ virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
goto error;
for (i = 0; i < svc->nsocks; i++) {
if (virNetSocketListen(svc->socks[i], 0) < 0)
if (virNetSocketListen(svc->socks[i], max_queued_clients) < 0)
goto error;
/* IO callback is initially disabled, until we're ready

2
src/rpc/virnetserverservice.h
View File

@ -44,6 +44,7 @@ virNetServerServicePtr virNetServerServiceNewTCP(const char *nodename,
virNetTLSContextPtr tls,
# endif
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max);
virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
mode_t mask,
@ -53,6 +54,7 @@ virNetServerServicePtr virNetServerServiceNewUNIX(const char *path,
virNetTLSContextPtr tls,
# endif
bool readonly,
size_t max_queued_clients,
size_t nrequests_client_max);
virNetServerServicePtr virNetServerServiceNewFD(int fd,
int auth,