What steps will reproduce the problem? 1. There is a error when I run "likwid-perfctr -C 0 -g MEM ls -l". CPU is Intel Xeon E5-2620.

# likwid-perfctr -C 0 -g MEM ls -l

CPU type: Intel Core SandyBridge EP processor CPU clock: 2.00 GHz Measuring group MEM ERROR - [./src/perfmon.c:623] Counter register MBOX0C0 not supported

What is the expected output? What do you see instead? I want to see memory bandwidth. In another server, it 's work well.

# likwid-perfctr -C 0 -g MEM ls -l

CPU type: Intel Core Bloomfield processor CPU clock: 2.27 GHz

Measuring group MEM

ls -l total 4118812 ..... .....

Status: 0x0 +--------------------------------+-------------+ | Event | core 0 | +--------------------------------+-------------+ | INSTR_RETIRED_ANY | 2.92548e+06 | | CPU_CLK_UNHALTED_CORE | 9.72435e+06 | | CPU_CLK_UNHALTED_REF | 4.85144e+06 | | UNC_QMC_NORMAL_READS_ANY | 30440 | | UNC_QMC_WRITES_FULL_ANY | 4563 | | UNC_QHL_REQUESTS_REMOTE_READS | 1525 | | UNC_QHL_REQUESTS_LOCAL_READS | 34179 | | UNC_QHL_REQUESTS_REMOTE_WRITES | 23 | +--------------------------------+-------------+ +-----------------------------+------------+ | Metric | core 0 | +-----------------------------+------------+ | Runtime (RDTSC) [s] | 0.00607302 | | Runtime unhalted [s] | 0.00429006 | | Clock [MHz] | 4543.46 | | CPI | 3.32402 | | Memory bandwidth [MBytes/s] | 368.876 | | Memory data volume [GBytes] | 0.00224019 | | Remote Read BW [MBytes/s] | 16.0711 | | Remote Write BW [MBytes/s] | 0.242383 | | Remote BW [MBytes/s] | 16.3135 | +-----------------------------+------------+

What version of the product are you using?

likwid-perfctr -v

likwid-perfctr 3.0

Please provide any additional information below.

Likwid is a excellent tool, thank you.

Hi, the current solution for Uncore is a bit fragile as it relies on PCI address space registers. And these are relying on proper behaviour of the BIOS and the OS kernel to be accessible in a save way. So these devices might be missing on your machine, you can check this with lspci command.

Another reason for your error could be that you did not enable the SandyBridge Uncore in config.mk. The option is called ENABLE_SNB_UNCORE. Default is disabled because of the reasons above. Also note that if you enable the Uncore the marker API might have a significant overhead on SandyBridge-EP as currently all counters are read. This will be resolved in the upcoming release.

Comment deleted

Thanks for your help ,maybe some of devices is missing in this server. How can I know which devices is missing through lspci command ?

I enable SandyBridge Uncore support.

likwid-perfctr -C 0 -g MEM ls -l

INFO This system has no support for PCI based Uncore counters. This means you cannot use performance groups as MEM, which require Uncore counters.

ERROR failed to open pci device: No such file or directory!

Here is the lspci info:

lspci

00:00.0 Host bridge: Intel Corporation Xeon E5/Core i7 DMI2 (rev 07) 00:01.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 1a (rev 07) 00:02.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2a (rev 07) 00:03.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3a in PCI Express Mode (rev 07) 00:03.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 3c (rev 07) 00:04.0 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 0 (rev 07) 00:04.1 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 1 (rev 07) 00:04.2 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 2 (rev 07) 00:04.3 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 3 (rev 07) 00:04.4 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 4 (rev 07) 00:04.5 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 5 (rev 07) 00:04.6 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 6 (rev 07) 00:04.7 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 7 (rev 07) 00:05.0 System peripheral: Intel Corporation Xeon E5/Core i7 Address Map, VTd_Misc, System Management (rev 07) 00:05.2 System peripheral: Intel Corporation Xeon E5/Core i7 Control Status and Global Errors (rev 07) 00:11.0 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Virtual Root Port (rev 06) 00:1a.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #2 (rev 06) 00:1c.0 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Root Port 1 (rev b6) 00:1c.7 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Root Port 8 (rev b6) 00:1d.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #1 (rev 06) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a6) 00:1f.0 ISA bridge: Intel Corporation C600/X79 series chipset LPC Controller (rev 06) 00:1f.2 SATA controller: Intel Corporation C600/X79 series chipset 6-Port SATA AHCI Controller (rev 06) 00:1f.3 SMBus: Intel Corporation C600/X79 series chipset SMBus Host Controller (rev 06) 01:00.0 PCI bridge: Renesas Technology Corp. SH7757 PCIe Switch [PS] 02:00.0 PCI bridge: Renesas Technology Corp. SH7757 PCIe Switch [PS] 02:01.0 PCI bridge: Renesas Technology Corp. SH7757 PCIe Switch [PS] 03:00.0 PCI bridge: Renesas Technology Corp. SH7757 PCIe-PCI Bridge [PPB] 04:00.0 VGA compatible controller: Matrox Electronics Systems Ltd. G200eR2 06:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 06:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 06:00.2 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 06:00.3 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 0c:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03) 11:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03) 1b:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2004 PCI-Express Fusion-MPT SAS-2 [Spitfire] (rev 03) 80:00.0 PCI bridge: Intel Corporation Xeon E5/Core i7 DMI2 in PCI Express Mode (rev 07) 80:02.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port 2a (rev 07) 80:04.0 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 0 (rev 07) 80:04.1 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 1 (rev 07) 80:04.2 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 2 (rev 07) 80:04.3 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 3 (rev 07) 80:04.4 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 4 (rev 07) 80:04.5 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 5 (rev 07) 80:04.6 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 6 (rev 07) 80:04.7 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 7 (rev 07) 80:05.0 System peripheral: Intel Corporation Xeon E5/Core i7 Address Map, VTd_Misc, System Management (rev 07) 80:05.2 System peripheral: Intel Corporation Xeon E5/Core i7 Control Status and Global Errors (rev 07)

Hi,

your system is missing the Performance Monitoring PCI devices. See the attached file for an example (relevant are the devices starting with 7f and ff). To fix that you might need to enable performance monitoring in the BIOS or use a more recent kernel (still I do not know exactly since what kernel version those SNB devices are supported, our system used a 3.0.51 kernel). It might be necessary to update the BIOS (this depends on your mainboard vendor).