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Message-ID: <20140110101433.GW27046@suse.de>
Date: Fri, 10 Jan 2014 10:14:34 +0000
From: Mel Gorman <mgorman@...e.de>
To: Len Brown <lenb@...nel.org>
Cc: Greg KH <gregkh@...uxfoundation.org>, athorlton@....com,
Rik van Riel <riel@...hat.com>, chegu_vinod@...com,
Len Brown <len.brown@...el.com>,
"H. Peter Anvin" <hpa@...ux.intel.com>,
LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org
Subject: Re: Idle power fix regresses ebizzy performance (was 3.12-stable
backport of NUMA balancing patches)
On Thu, Jan 09, 2014 at 03:07:00PM -0500, Len Brown wrote:
> Hi Mel,
> Thanks for the bisect.
> What is the cpuid of the machine that sees the regression?
>
cpuid information for CPU 0. Machine is 4 socket, 48 threads in total.
CPU 0:
vendor_id = "GenuineIntel"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium Pro/II/III/Celeron/Core/Core 2/Atom, AMD Athlon/Duron, Cyrix M2, VIA C3 (6)
model = 0xf (15)
stepping id = 0x2 (2)
extended family = 0x0 (0)
extended model = 0x2 (2)
(simple synth) = Intel Xeon E7-8800 / Xeon E7-4800 / Xeon E7-2800 (Westmere-EX A2), 32nm
miscellaneous (1/ebx):
process local APIC physical ID = 0x0 (0)
cpu count = 0x40 (64)
CLFLUSH line size = 0x8 (8)
brand index = 0x0 (0)
brand id = 0x00 (0): unknown
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = true
thermal monitor and clock ctrl = true
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = true
hyper-threading / multi-core supported = true
therm. monitor = true
IA64 = false
pending break event = true
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = true
PCLMULDQ instruction = true
64-bit debug store = true
MONITOR/MWAIT = true
CPL-qualified debug store = true
VMX: virtual machine extensions = true
SMX: safer mode extensions = true
Enhanced Intel SpeedStep Technology = true
thermal monitor 2 = true
SSSE3 extensions = true
context ID: adaptive or shared L1 data = false
FMA instruction = false
CMPXCHG16B instruction = true
xTPR disable = true
perfmon and debug = true
process context identifiers = true
direct cache access = true
SSE4.1 extensions = true
SSE4.2 extensions = true
extended xAPIC support = true
MOVBE instruction = false
POPCNT instruction = true
time stamp counter deadline = false
AES instruction = true
XSAVE/XSTOR states = false
OS-enabled XSAVE/XSTOR = false
AVX: advanced vector extensions = false
F16C half-precision convert instruction = false
RDRAND instruction = false
hypervisor guest status = false
cache and TLB information (2):
0x5a: data TLB: 2M/4M pages, 4-way, 32 entries
0x03: data TLB: 4K pages, 4-way, 64 entries
0x55: instruction TLB: 2M/4M pages, fully, 7 entries
0xeb: L3 cache: 18M, 24-way, 64 byte lines
0xb2: instruction TLB: 4K, 4-way, 64 entries
0xf0: 64 byte prefetching
0x2c: L1 data cache: 32K, 8-way, 64 byte lines
0x21: L2 cache: 256K MLC, 8-way, 64 byte lines
0xca: L2 TLB: 4K, 4-way, 512 entries
0x09: L1 instruction cache: 32K, 4-way, 64-byte lines
processor serial number: 0002-06F2-0000-0000-0000-0000
deterministic cache parameters (4):
--- cache 0 ---
cache type = data cache (1)
cache level = 0x1 (1)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x1 (1)
extra processor cores on this die = 0x1f (31)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0x7 (7)
WBINVD/INVD behavior on lower caches = false
inclusive to lower caches = false
complex cache indexing = false
number of sets - 1 (s) = 63
--- cache 1 ---
cache type = instruction cache (2)
cache level = 0x1 (1)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x1 (1)
extra processor cores on this die = 0x1f (31)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0x3 (3)
WBINVD/INVD behavior on lower caches = false
inclusive to lower caches = false
complex cache indexing = false
number of sets - 1 (s) = 127
--- cache 2 ---
cache type = unified cache (3)
cache level = 0x2 (2)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x1 (1)
extra processor cores on this die = 0x1f (31)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0x7 (7)
WBINVD/INVD behavior on lower caches = false
inclusive to lower caches = false
complex cache indexing = false
number of sets - 1 (s) = 511
--- cache 3 ---
cache type = unified cache (3)
cache level = 0x3 (3)
self-initializing cache level = true
fully associative cache = false
extra threads sharing this cache = 0x3f (63)
extra processor cores on this die = 0x1f (31)
system coherency line size = 0x3f (63)
physical line partitions = 0x0 (0)
ways of associativity = 0x17 (23)
WBINVD/INVD behavior on lower caches = false
inclusive to lower caches = true
complex cache indexing = true
number of sets - 1 (s) = 12287
MONITOR/MWAIT (5):
smallest monitor-line size (bytes) = 0x40 (64)
largest monitor-line size (bytes) = 0x40 (64)
enum of Monitor-MWAIT exts supported = true
supports intrs as break-event for MWAIT = true
number of C0 sub C-states using MWAIT = 0x0 (0)
number of C1 sub C-states using MWAIT = 0x2 (2)
number of C2 sub C-states using MWAIT = 0x1 (1)
number of C3/C6 sub C-states using MWAIT = 0x1 (1)
number of C4/C7 sub C-states using MWAIT = 0x0 (0)
Thermal and Power Management Features (6):
digital thermometer = true
Intel Turbo Boost Technology = false
ARAT always running APIC timer = true
PLN power limit notification = false
ECMD extended clock modulation duty = false
PTM package thermal management = false
digital thermometer thresholds = 0x1 (1)
ACNT/MCNT supported performance measure = true
ACNT2 available = false
performance-energy bias capability = false
extended feature flags (7):
FSGSBASE instructions = false
BMI instruction = false
SMEP support = false
enhanced REP MOVSB/STOSB = false
INVPCID instruction = false
Direct Cache Access Parameters (9):
PLATFORM_DCA_CAP MSR bits = 0
Architecture Performance Monitoring Features (0xa/eax):
version ID = 0x3 (3)
number of counters per logical processor = 0x4 (4)
bit width of counter = 0x30 (48)
length of EBX bit vector = 0x7 (7)
Architecture Performance Monitoring Features (0xa/ebx):
core cycle event not available = false
instruction retired event not available = false
reference cycles event not available = true
last-level cache ref event not available = false
last-level cache miss event not avail = false
branch inst retired event not available = false
branch mispred retired event not avail = false
Architecture Performance Monitoring Features (0xa/edx):
number of fixed counters = 0x3 (3)
bit width of fixed counters = 0x30 (48)
x2APIC features / processor topology (0xb):
--- level 0 (thread) ---
bits to shift APIC ID to get next = 0x1 (1)
logical processors at this level = 0x2 (2)
level number = 0x0 (0)
level type = thread (1)
extended APIC ID = 0
--- level 1 (core) ---
bits to shift APIC ID to get next = 0x6 (6)
logical processors at this level = 0xc (12)
level number = 0x1 (1)
level type = core (2)
extended APIC ID = 0
extended feature flags (0x80000001/edx):
SYSCALL and SYSRET instructions = true
execution disable = true
1-GB large page support = true
RDTSCP = true
64-bit extensions technology available = true
Intel feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = true
brand = " Intel(R) Xeon(R) CPU E7- 4807 @ 1.87GHz"
L1 TLB/cache information: 2M/4M pages & L1 TLB (0x80000005/eax):
instruction # entries = 0x0 (0)
instruction associativity = 0x0 (0)
data # entries = 0x0 (0)
data associativity = 0x0 (0)
L1 TLB/cache information: 4K pages & L1 TLB (0x80000005/ebx):
instruction # entries = 0x0 (0)
instruction associativity = 0x0 (0)
data # entries = 0x0 (0)
data associativity = 0x0 (0)
L1 data cache information (0x80000005/ecx):
line size (bytes) = 0x0 (0)
lines per tag = 0x0 (0)
associativity = 0x0 (0)
size (Kb) = 0x0 (0)
L1 instruction cache information (0x80000005/edx):
line size (bytes) = 0x0 (0)
lines per tag = 0x0 (0)
associativity = 0x0 (0)
size (Kb) = 0x0 (0)
L2 TLB/cache information: 2M/4M pages & L2 TLB (0x80000006/eax):
instruction # entries = 0x0 (0)
instruction associativity = L2 off (0)
data # entries = 0x0 (0)
data associativity = L2 off (0)
L2 TLB/cache information: 4K pages & L2 TLB (0x80000006/ebx):
instruction # entries = 0x0 (0)
instruction associativity = L2 off (0)
data # entries = 0x0 (0)
data associativity = L2 off (0)
L2 unified cache information (0x80000006/ecx):
line size (bytes) = 0x40 (64)
lines per tag = 0x0 (0)
associativity = 8-way (6)
size (Kb) = 0x100 (256)
L3 cache information (0x80000006/edx):
line size (bytes) = 0x0 (0)
lines per tag = 0x0 (0)
associativity = L2 off (0)
size (in 512Kb units) = 0x0 (0)
Advanced Power Management Features (0x80000007/edx):
temperature sensing diode = false
frequency ID (FID) control = false
voltage ID (VID) control = false
thermal trip (TTP) = false
thermal monitor (TM) = false
software thermal control (STC) = false
100 MHz multiplier control = false
hardware P-State control = false
TscInvariant = true
Physical Address and Linear Address Size (0x80000008/eax):
maximum physical address bits = 0x2c (44)
maximum linear (virtual) address bits = 0x30 (48)
maximum guest physical address bits = 0x0 (0)
Logical CPU cores (0x80000008/ecx):
number of CPU cores - 1 = 0x0 (0)
ApicIdCoreIdSize = 0x0 (0)
(multi-processing synth): multi-core (c=6), hyper-threaded (t=2)
(multi-processing method): Intel leaf 0xb
(APIC widths synth): CORE_width=6 SMT_width=1
(APIC synth): PKG_ID=0 CORE_ID=0 SMT_ID=0
(synth) = Intel Xeon E7-8800 / Xeon E7-4800 / Xeon E7-2800 (Westmere-EX A2), 32nm
--
Mel Gorman
SUSE Labs
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