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VBOX: Enable the use of hardware acceleration on single core machines. 

This requires BOINC 7.2.18 or better and for BOINC to have not have detected VM extensions being disabled in the BIOS.

T4T has stopped handing out multi-core work.  Disabling the use of hardware extensions on a machine that supports them might be leading to performance problems for other VMs running on the same machine.
This commit is contained in:
Rom Walton 2013-10-04 00:30:40 -04:00
parent 7cca8a59eb
commit 2baaa7da9f
1 changed files with 29 additions and 2 deletions
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31
samples/vboxwrapper/vbox.cpp
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@ -57,6 +57,15 @@ using std::string;
#include "vboxwrapper.h"
#include "vbox.h"
static bool is_client_version_newer(APP_INIT_DATA& aid, int maj, int min, int rel) {
if (maj > aid.major_version) return true;
if (maj < aid.major_version) return false;
if (min > aid.minor_version) return true;
if (min < aid.minor_version) return false;
if (rel > aid.release) return true;
return false;
}
VBOX_VM::VBOX_VM() {
virtualbox_version.clear();
pFloppy = NULL;
@ -926,12 +935,29 @@ int VBOX_VM::register_vm() {
// Only perform hardware acceleration check on 32-bit VM types, 64-bit VM types require it.
//
if (os_name.find("_64") == std::string::npos) {
// Check to see if the processor supports hardware acceleration for virtualization
// If it doesn't, disable the use of it in VirtualBox. Multi-core jobs require hardware
// acceleration and actually override this setting.
//
if ((vm_cpu_count == "1") ||
(!strstr(aid.host_info.p_features, "vmx") && !strstr(aid.host_info.p_features, "svm"))) {
bool disable_acceleration = false;
if (!strstr(aid.host_info.p_features, "vmx") && !strstr(aid.host_info.p_features, "svm")) {
disable_acceleration = true;
}
if (is_client_version_newer(aid, 7, 2, 16)) {
if (aid.vm_extensions_disabled) {
disable_acceleration = true;
}
} else {
if (vm_cpu_count == "1") {
// Keep this around for older clients. Removing this for older clients might
// lead to a machine that will only return crashed VM reports.
disable_acceleration = true;
}
}
if (disable_acceleration) {
fprintf(
stderr,
"%s Disabling hardware acceleration support for virtualization.\n",
@ -943,6 +969,7 @@ int VBOX_VM::register_vm() {
retval = vbm_popen(command, output, "VT-x/AMD-V support");
if (retval) return retval;
}
}
// Add storage controller to VM