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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] xenpm: provide core/package cstate residencies
xenpm: provide core/package cstate residencies
According to Intel 64 and IA32 Architectures SDM 3B Appendix B, Intel
Nehalem/Westmere processors provide h/w MSR to report the core/package cstate
residencies.Extend sysctl_get_pmstat interface to pass the core/package cstate
residencies, and modify xenpm to output those information.
Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
diff -r 1af6303f103c tools/libxc/xc_pm.c
--- a/tools/libxc/xc_pm.c Mon Jul 12 14:12:54 2010 +0800
+++ b/tools/libxc/xc_pm.c Mon Jul 12 17:47:25 2010 +0800
@@ -152,6 +152,11 @@ int xc_pm_get_cxstat(xc_interface *xch,
cxpt->nr = sysctl.u.get_pmstat.u.getcx.nr;
cxpt->last = sysctl.u.get_pmstat.u.getcx.last;
cxpt->idle_time = sysctl.u.get_pmstat.u.getcx.idle_time;
+ cxpt->pc3 = sysctl.u.get_pmstat.u.getcx.pc3;
+ cxpt->pc6 = sysctl.u.get_pmstat.u.getcx.pc6;
+ cxpt->pc7 = sysctl.u.get_pmstat.u.getcx.pc7;
+ cxpt->cc3 = sysctl.u.get_pmstat.u.getcx.cc3;
+ cxpt->cc6 = sysctl.u.get_pmstat.u.getcx.cc6;
unlock_3:
unlock_pages(cxpt->residencies, max_cx * sizeof(uint64_t));
diff -r 1af6303f103c tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Mon Jul 12 14:12:54 2010 +0800
+++ b/tools/libxc/xenctrl.h Mon Jul 12 17:33:17 2010 +0800
@@ -1393,6 +1393,11 @@ struct xc_cx_stat {
uint64_t idle_time; /* idle time from boot */
uint64_t *triggers; /* Cx trigger counts */
uint64_t *residencies; /* Cx residencies */
+ uint64_t pc3;
+ uint64_t pc6;
+ uint64_t pc7;
+ uint64_t cc3;
+ uint64_t cc6;
};
typedef struct xc_cx_stat xc_cx_stat_t;
diff -r 1af6303f103c tools/misc/xenpm.c
--- a/tools/misc/xenpm.c Mon Jul 12 14:12:54 2010 +0800
+++ b/tools/misc/xenpm.c Mon Jul 12 17:38:39 2010 +0800
@@ -15,6 +15,7 @@
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
+#define MAX_NR_CPU 512
#include <stdio.h>
#include <stdlib.h>
@@ -91,6 +92,13 @@ static void print_cxstat(int cpuid, stru
printf(" residency [%020"PRIu64" ms]\n",
cxstat->residencies[i]/1000000UL);
}
+ printf("pc3 : [%020"PRIu64" ms]\n"
+ "pc6 : [%020"PRIu64" ms]\n"
+ "pc7 : [%020"PRIu64" ms]\n",
+ cxstat->pc3/1000000UL, cxstat->pc6/1000000UL,
cxstat->pc7/1000000UL);
+ printf("cc3 : [%020"PRIu64" ms]\n"
+ "cc6 : [%020"PRIu64" ms]\n",
+ cxstat->cc3/1000000UL, cxstat->cc6/1000000UL);
printf("\n");
}
@@ -306,9 +314,13 @@ static uint64_t *sum, *sum_cx, *sum_px;
static void signal_int_handler(int signo)
{
- int i, j;
+ int i, j, k, ret;
struct timeval tv;
int cx_cap = 0, px_cap = 0;
+ uint32_t cpu_to_core[MAX_NR_CPU];
+ uint32_t cpu_to_socket[MAX_NR_CPU];
+ uint32_t cpu_to_node[MAX_NR_CPU];
+ xc_topologyinfo_t info = { 0 };
if ( gettimeofday(&tv, NULL) == -1 )
{
@@ -369,6 +381,93 @@ static void signal_int_handler(int signo
pxstat_start[i].pt[j].residency;
printf(" P%d\t%"PRIu64"\t(%5.2f%%)\n", j,
res / 1000000UL, 100UL * res / (double)sum_px[i]);
+ }
+ }
+ }
+
+ set_xen_guest_handle(info.cpu_to_core, cpu_to_core);
+ set_xen_guest_handle(info.cpu_to_socket, cpu_to_socket);
+ set_xen_guest_handle(info.cpu_to_node, cpu_to_node);
+ info.max_cpu_index = MAX_NR_CPU - 1;
+
+ ret = xc_topologyinfo(xc_handle, &info);
+ if ( !ret )
+ {
+ uint32_t socket_ids[MAX_NR_CPU];
+ uint32_t core_ids[MAX_NR_CPU];
+ uint32_t socket_nr = 0;
+ uint32_t core_nr = 0;
+
+ if ( info.max_cpu_index > MAX_NR_CPU - 1 )
+ info.max_cpu_index = MAX_NR_CPU - 1;
+ /* check validity */
+ for ( i = 0; i <= info.max_cpu_index; i++ )
+ {
+ if ( cpu_to_core[i] == INVALID_TOPOLOGY_ID ||
+ cpu_to_socket[i] == INVALID_TOPOLOGY_ID )
+ break;
+ }
+ if ( i > info.max_cpu_index )
+ {
+ /* find socket nr & core nr per socket */
+ for ( i = 0; i <= info.max_cpu_index; i++ )
+ {
+ for ( j = 0; j < socket_nr; j++ )
+ if ( cpu_to_socket[i] == socket_ids[j] )
+ break;
+ if ( j == socket_nr )
+ {
+ socket_ids[j] = cpu_to_socket[i];
+ socket_nr++;
+ }
+
+ for ( j = 0; j < core_nr; j++ )
+ if ( cpu_to_core[i] == core_ids[j] )
+ break;
+ if ( j == core_nr )
+ {
+ core_ids[j] = cpu_to_core[i];
+ core_nr++;
+ }
+ }
+
+ /* print out CC? and PC? */
+ for ( i = 0; i < socket_nr; i++ )
+ {
+ uint64_t res;
+ for ( j = 0; j <= info.max_cpu_index; j++ )
+ {
+ if ( cpu_to_socket[j] == socket_ids[i] )
+ break;
+ }
+ printf("Socket %d\n", socket_ids[i]);
+ res = cxstat_end[j].pc3 - cxstat_start[j].pc3;
+ printf("\tPC3\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
+ 100UL * res / (double)sum_cx[j]);
+ res = cxstat_end[j].pc6 - cxstat_start[j].pc6;
+ printf("\tPC6\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
+ 100UL * res / (double)sum_cx[j]);
+ res = cxstat_end[j].pc7 - cxstat_start[j].pc7;
+ printf("\tPC7\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
+ 100UL * res / (double)sum_cx[j]);
+ for ( k = 0; k < core_nr; k++ )
+ {
+ for ( j = 0; j <= info.max_cpu_index; j++ )
+ {
+ if ( cpu_to_socket[j] == socket_ids[i] &&
+ cpu_to_core[j] == core_ids[k] )
+ break;
+ }
+ printf("\t Core %d CPU %d\n", core_ids[k], j);
+ res = cxstat_end[j].cc3 - cxstat_start[j].cc3;
+ printf("\t\tCC3\t%"PRIu64" ms\t%.2f%%\n", res /
1000000UL,
+ 100UL * res / (double)sum_cx[j]);
+ res = cxstat_end[j].cc6 - cxstat_start[j].cc6;
+ printf("\t\tCC6\t%"PRIu64" ms\t%.2f%%\n", res /
1000000UL,
+ 100UL * res / (double)sum_cx[j]);
+ printf("\n");
+
+ }
}
}
printf(" Avg freq\t%d\tKHz\n", avgfreq[i]);
@@ -833,8 +932,6 @@ out:
fprintf(stderr, "failed to set governor name\n");
}
-#define MAX_NR_CPU 512
-
void cpu_topology_func(int argc, char *argv[])
{
uint32_t cpu_to_core[MAX_NR_CPU];
diff -r 1af6303f103c xen/arch/x86/acpi/cpu_idle.c
--- a/xen/arch/x86/acpi/cpu_idle.c Mon Jul 12 14:12:54 2010 +0800
+++ b/xen/arch/x86/acpi/cpu_idle.c Mon Jul 12 17:40:52 2010 +0800
@@ -55,6 +55,14 @@
/*#define DEBUG_PM_CX*/
+#define GET_HW_RES_IN_NS(msr, val) \
+ do { rdmsrl(msr, val); val = tsc_ticks2ns(val); } while( 0 )
+#define GET_PC3_RES(val) GET_HW_RES_IN_NS(0x3F8, val)
+#define GET_PC6_RES(val) GET_HW_RES_IN_NS(0x3F9, val)
+#define GET_PC7_RES(val) GET_HW_RES_IN_NS(0x3FA, val)
+#define GET_CC3_RES(val) GET_HW_RES_IN_NS(0x3FC, val)
+#define GET_CC6_RES(val) GET_HW_RES_IN_NS(0x3FD, val)
+
static void lapic_timer_nop(void) { }
static void (*lapic_timer_off)(void);
static void (*lapic_timer_on)(void);
@@ -75,6 +83,47 @@ boolean_param("lapic_timer_c2_ok", local
boolean_param("lapic_timer_c2_ok", local_apic_timer_c2_ok);
static struct acpi_processor_power *__read_mostly processor_powers[NR_CPUS];
+
+struct hw_residencies
+{
+ uint64_t pc3;
+ uint64_t pc6;
+ uint64_t pc7;
+ uint64_t cc3;
+ uint64_t cc6;
+};
+
+static void do_get_hw_residencies(void *arg)
+{
+ struct hw_residencies *hw_res = (struct hw_residencies *)arg;
+
+ GET_PC3_RES(hw_res->pc3);
+ GET_PC6_RES(hw_res->pc6);
+ GET_PC7_RES(hw_res->pc7);
+ GET_CC3_RES(hw_res->cc3);
+ GET_CC6_RES(hw_res->cc6);
+}
+
+static void get_hw_residencies(uint32_t cpu, struct hw_residencies *hw_res)
+{
+ if ( smp_processor_id() == cpu )
+ do_get_hw_residencies((void *)hw_res);
+ else
+ on_selected_cpus(cpumask_of(cpu),
+ do_get_hw_residencies, (void *)hw_res, 1);
+}
+
+static void print_hw_residencies(uint32_t cpu)
+{
+ struct hw_residencies hw_res;
+
+ get_hw_residencies(cpu, &hw_res);
+
+ printk("PC3[%"PRId64"] PC6[%"PRId64"] PC7[%"PRId64"]\n",
+ hw_res.pc3, hw_res.pc6, hw_res.pc7);
+ printk("CC3[%"PRId64"] CC6[%"PRId64"]\n",
+ hw_res.cc3, hw_res.cc6);
+}
static char* acpi_cstate_method_name[] =
{
@@ -113,6 +162,7 @@ static void print_acpi_power(uint32_t cp
printk(" C0:\tusage[%08d] duration[%"PRId64"]\n",
idle_usage, NOW() - idle_res);
+ print_hw_residencies(cpu);
}
static void dump_cx(unsigned char key)
@@ -933,6 +983,7 @@ int pmstat_get_cx_stat(uint32_t cpuid, s
const struct acpi_processor_power *power = processor_powers[cpuid];
uint64_t usage, res, idle_usage = 0, idle_res = 0;
int i;
+ struct hw_residencies hw_res = { 0 };
if ( power == NULL )
{
@@ -965,6 +1016,26 @@ int pmstat_get_cx_stat(uint32_t cpuid, s
return -EFAULT;
}
+ switch ( cpuid_eax(1) & 0x0FFF0FF0 )
+ {
+ /* Nehalem */
+ case 0x106A0:
+ case 0x106E0:
+ case 0x106F0:
+ case 0x206E0:
+ /* Westmere */
+ case 0x20650:
+ case 0x206C0:
+ get_hw_residencies(cpuid, &hw_res);
+ break;
+ }
+
+ stat->pc3 = hw_res.pc3;
+ stat->pc6 = hw_res.pc6;
+ stat->pc7 = hw_res.pc7;
+ stat->cc3 = hw_res.cc3;
+ stat->cc6 = hw_res.cc6;
+
return 0;
}
diff -r 1af6303f103c xen/arch/x86/time.c
--- a/xen/arch/x86/time.c Mon Jul 12 14:12:54 2010 +0800
+++ b/xen/arch/x86/time.c Mon Jul 12 14:13:03 2010 +0800
@@ -785,6 +785,13 @@ s_time_t get_s_time(void)
now = t->stime_local_stamp + scale_delta(delta, &t->tsc_scale);
return now;
+}
+
+uint64_t tsc_ticks2ns(uint64_t ticks)
+{
+ struct cpu_time *t = &this_cpu(cpu_time);
+
+ return scale_delta(ticks, &t->tsc_scale);
}
/* Explicitly OR with 1 just in case version number gets out of sync. */
diff -r 1af6303f103c xen/include/asm-x86/time.h
--- a/xen/include/asm-x86/time.h Mon Jul 12 14:12:54 2010 +0800
+++ b/xen/include/asm-x86/time.h Mon Jul 12 14:28:57 2010 +0800
@@ -56,6 +56,8 @@ uint64_t acpi_pm_tick_to_ns(uint64_t tic
uint64_t acpi_pm_tick_to_ns(uint64_t ticks);
uint64_t ns_to_acpi_pm_tick(uint64_t ns);
+uint64_t tsc_ticks2ns(uint64_t ticks);
+
void pv_soft_rdtsc(struct vcpu *v, struct cpu_user_regs *regs, int rdtscp);
u64 gtime_to_gtsc(struct domain *d, u64 tsc);
diff -r 1af6303f103c xen/include/public/sysctl.h
--- a/xen/include/public/sysctl.h Mon Jul 12 14:12:54 2010 +0800
+++ b/xen/include/public/sysctl.h Mon Jul 12 17:34:58 2010 +0800
@@ -223,6 +223,11 @@ struct pm_cx_stat {
uint64_aligned_t idle_time; /* idle time from boot */
XEN_GUEST_HANDLE_64(uint64) triggers; /* Cx trigger counts */
XEN_GUEST_HANDLE_64(uint64) residencies; /* Cx residencies */
+ uint64_aligned_t pc3;
+ uint64_aligned_t pc6;
+ uint64_aligned_t pc7;
+ uint64_aligned_t cc3;
+ uint64_aligned_t cc6;
};
struct xen_sysctl_get_pmstat {Attachment:
xenpm-package-cstate.patch _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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