From 28d16f38d0d5881f95b074cc802dae8cacc1bf58 Mon Sep 17 00:00:00 2001 From: zhanghailiang Date: Tue, 23 Sep 2014 18:42:24 +0800 Subject: vl: Adjust the place of calling mlockall to speedup VM's startup If we configure mlock=on and memory policy=bind at the same time, It will consume lots of time for system to treat with memory, especially when call mbind behind mlockall. Adjust the place of calling mlockall, calling mbind before mlockall can remarkably reduce the time of VM's startup. Acked-by: Michael S. Tsirkin Signed-off-by: zhanghailiang Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- vl.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'vl.c') diff --git a/vl.c b/vl.c index dbdca594b7..9d2aaaf1dc 100644 --- a/vl.c +++ b/vl.c @@ -134,6 +134,7 @@ const char* keyboard_layout = NULL; ram_addr_t ram_size; const char *mem_path = NULL; int mem_prealloc = 0; /* force preallocation of physical target memory */ +bool enable_mlock = false; int nb_nics; NICInfo nd_table[MAX_NICS]; int autostart; @@ -1421,12 +1422,8 @@ static void smp_parse(QemuOpts *opts) } -static void configure_realtime(QemuOpts *opts) +static void realtime_init(void) { - bool enable_mlock; - - enable_mlock = qemu_opt_get_bool(opts, "mlock", true); - if (enable_mlock) { if (os_mlock() < 0) { fprintf(stderr, "qemu: locking memory failed\n"); @@ -3974,7 +3971,7 @@ int main(int argc, char **argv, char **envp) if (!opts) { exit(1); } - configure_realtime(opts); + enable_mlock = qemu_opt_get_bool(opts, "mlock", true); break; case QEMU_OPTION_msg: opts = qemu_opts_parse(qemu_find_opts("msg"), optarg, 0); @@ -4442,6 +4439,8 @@ int main(int argc, char **argv, char **envp) machine_class->init(current_machine); + realtime_init(); + audio_init(); cpu_synchronize_all_post_init(); -- cgit v1.2.1