Hi Andreas, This reply is late, and you probably already know what I am going to say. But at least, the following points may help someone in the future.
The events in the "/sys/bus/event_source/devices/uncore_*/events" are quite limited, compared to the uncore events offered in the processor. However, there is a way to let perf access more events. If you cat the file "/sys/bus/event_source/devices/uncore_mbox_0/events/bbox_cmds_read", it reads "inc_sel=0xd,fvc=0x2800", which are exactly the register values of the event bbox_cmds_read (note that I have a Nehalem-EX, so the values may be different from a Westmere-EX). Therefore, instead of passing the event name "uncore_mbox_0/event=bbox_cmds_read/" to perf, passing "uncore_mbox_0/inc_sel=0xd,fvc=0x2800/" tells perf to access the same event. Moreover, setting the registers to other values allows accessing other counters. For example, the following command, perf stat -a -e "uncore_mbox_0/inc_sel=0xa,pld=0x0500,iss=0x0/" /bin/ls accesses event CAS_RD_CLS. The name of the configurable registers (inc_sel, pld, iss, fvc etc.) can be found at the format directory: /sys/bus/event_source/devices/uncore_*box_*/format/ cheers, Wei On 12/19/2013 11:22 AM, Andreas Hollmann wrote: > Hi, > > it seems to work with > > perf stat -a -e "uncore_mbox_0/event=bbox_cmds_read/" /bin/ls > > These counter are also shown in: > > $ ls /sys/bus/event_source/devices/uncore_mbox_*/events > /sys/bus/event_source/devices/uncore_mbox_0/events: > bbox_cmds_read bbox_cmds_write > > /sys/bus/event_source/devices/uncore_mbox_1/events: > bbox_cmds_read bbox_cmds_write > [hollmann@inwest stream]$ ls > /sys/bus/event_source/devices/uncore_mbox_*/events > /sys/bus/event_source/devices/uncore_mbox_0/events: > bbox_cmds_read bbox_cmds_write > > /sys/bus/event_source/devices/uncore_mbox_1/events: > bbox_cmds_read bbox_cmds_write > > Other counters are in: > > $ ls /sys/bus/event_source/devices/uncore_rbox_*/events > /sys/bus/event_source/devices/uncore_rbox_0/events: > qpi0_date_response qpi0_flit_send qpi0_idle_filt qpi1_date_response > qpi1_filt_send qpi1_idle_filt > > /sys/bus/event_source/devices/uncore_rbox_1/events: > qpi0_date_response qpi0_flit_send qpi0_idle_filt qpi1_date_response > qpi1_filt_send qpi1_idle_filt > > > Maye this helps somebody else. > > 2013/12/19 Andreas Hollmann <andreas.hollm...@gmail.com>: >> Hi, >> >> I have a problem to read the IMC uncore counters (other uncore >> counters do also not work). >> >> -- >> perf stat -a -e "uncore_imc_0/event=0xff,umask=0x00/" /bin/ls >> invalid or unsupported event: 'uncore_imc_0/event=0xff,umask=0x00/' >> -- >> >> They are not even shown under /sys/... >> >> Is there uncore support for the Westmere EX in the Linux Kernel? >> >> If there is support, do I have a BIOS issue that these >> counters/devices are not exported and >> visible in the kernel? Can I enable this in the BIOS? >> >> Your help would be much appreciated. >> >> Here is my config: >> >> CPU: Quad-Socket Xeon Processor E7-4850 >> Mainboard: Supermicro X8QB6-F >> Linux inwest 3.12.0-1-ARCH #1 SMP PREEMPT Wed Nov 6 09:06:27 CET 2013 >> x86_64 GNU/Linux > ------------------------------------------------------------------------------ > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application performance > affects their revenue. With AppDynamics, you get 100% visibility into your > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > _______________________________________________ > perfmon2-devel mailing list > perfmon2-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/perfmon2-devel ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
