From: Shashikant B. <bha...@gm...> - 2011-01-25 18:57:34
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Hi, On RedHat Linux, running on AMD chip I am trying to use mutiple events like, sudo opcontrol -e L2_CACHE_MISS:50000 -e REQUEST_TO_L2:50000 and this hangs the entire machine. What could be the cause? Using single event works fine without any problem. Regards, -- Shashikant Bhandari 301 528 6436 (H) 240 350 6639 (Cell) |
From: Suthikulpanit, S. <Sur...@am...> - 2011-01-25 20:56:11
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What processor and what version of Oprofile are you using? Suravee -----Original Message----- From: Shashikant Bhandari [mailto:bha...@gm...] Sent: Tuesday, January 25, 2011 12:57 PM To: opr...@li...; Shashikant Bhandari Subject: Multiple events for Oprofile hangs entire machine, need to power boot Hi, On RedHat Linux, running on AMD chip I am trying to use mutiple events like, sudo opcontrol -e L2_CACHE_MISS:50000 -e REQUEST_TO_L2:50000 and this hangs the entire machine. What could be the cause? Using single event works fine without any problem. Regards, -- Shashikant Bhandari 301 528 6436 (H) 240 350 6639 (Cell) ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ oprofile-list mailing list opr...@li... https://lists.sourceforge.net/lists/listinfo/oprofile-list |
From: William C. <wc...@re...> - 2011-01-25 21:09:05
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On 01/25/2011 03:40 PM, Suthikulpanit, Suravee wrote: > What processor and what version of Oprofile are you using? > > Suravee > > -----Original Message----- > From: Shashikant Bhandari [mailto:bha...@gm...] > Sent: Tuesday, January 25, 2011 12:57 PM > To: opr...@li...; Shashikant Bhandari > Subject: Multiple events for Oprofile hangs entire machine, need to power boot > > Hi, > > On RedHat Linux, running on AMD chip I am trying to use mutiple events like, > > sudo opcontrol -e L2_CACHE_MISS:50000 -e REQUEST_TO_L2:50000 > > and this hangs the entire machine. > > What could be the cause? Using single event works fine without any problem. > > > > Regards, > > Hi, If you are using Red Hat packages it is also useful to know which version of Red hat Linux packages you are using. "rpm -q oprofile kernel" should indicate what versions of the package are installed and "uname -a" should indicate which kernel that is actually running. -Will |
From: Shashikant B. <bha...@gm...> - 2011-01-26 22:37:13
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Thanks a lot, Here are some details, Red Hat Enterprise Linux Server release 5.3 (Tikanga) Kernel 2.6.18-128.el5 on an x86_64 [bhandari@shashi ~]$ uname -a Linux redeye.sybase.com 2.6.18-128.el5 #1 SMP Wed Dec 17 11:41:38 EST 2008 x86_64 x86_64 x86_64 GNU/Linux [bhandari@shashi ~]$ rpm -q oprofile kernel oprofile-0.9.3-18.el5 kernel-2.6.18-128.el5 [bhandari@shashi ~]$ more /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 33 model name : Dual Core AMD Opteron(tm) Processor 880 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3d now pni lahf_lm cmp_legacy bogomips : 1991.10 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 33 model name : Dual Core AMD Opteron(tm) Processor 880 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse3 6 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy bogomips : 1991.10 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp processor : 2 vendor_id : AuthenticAMD cpu family : 15 model : 33 model name : Dual Core AMD Opteron(tm) Processor 880 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 1 siblings : 2 core id : 0 cpu cores : 2 apicid : 2 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy bogomips : 1991.10 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp processor : 3 vendor_id : AuthenticAMD cpu family : 15 model : 33 model name : Dual Core AMD Opteron(tm) Processor 880 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 1 siblings : 2 core id : 1 cpu cores : 2 apicid : 3 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy bogomips : 1991.10 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp Thanks a lot for your help/pointers Regards Shashikant On Tue, Jan 25, 2011 at 4:08 PM, William Cohen <wc...@re...> wrote: > On 01/25/2011 03:40 PM, Suthikulpanit, Suravee wrote: >> What processor and what version of Oprofile are you using? >> >> Suravee >> >> -----Original Message----- >> From: Shashikant Bhandari [mailto:bha...@gm...] >> Sent: Tuesday, January 25, 2011 12:57 PM >> To: opr...@li...; Shashikant Bhandari >> Subject: Multiple events for Oprofile hangs entire machine, need to power boot >> >> Hi, >> >> On RedHat Linux, running on AMD chip I am trying to use mutiple events like, >> >> sudo opcontrol -e L2_CACHE_MISS:50000 -e REQUEST_TO_L2:50000 >> >> and this hangs the entire machine. >> >> What could be the cause? Using single event works fine without any problem. >> >> >> >> Regards, >> >> > > Hi, > > If you are using Red Hat packages it is also useful to know which version of Red hat Linux packages you are using. "rpm -q oprofile kernel" should indicate what versions of the package are installed and "uname -a" should indicate which kernel that is actually running. > > -Will > -- Shashikant Bhandari 301 528 6436 (H) 240 350 6639 (Cell) |
From: William C. <wc...@re...> - 2011-01-27 15:57:03
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On 01/26/2011 11:54 AM, Shashikant Bhandari wrote: > Thanks a lot, > > Here are some details, > > Red Hat Enterprise Linux Server release 5.3 (Tikanga) > Kernel 2.6.18-128.el5 on an x86_64 > > [bhandari@shashi ~]$ uname -a > Linux redeye.sybase.com 2.6.18-128.el5 #1 SMP Wed Dec 17 11:41:38 EST > 2008 x86_64 x86_64 x86_64 GNU/Linux > > [bhandari@shashi ~]$ rpm -q oprofile kernel > oprofile-0.9.3-18.el5 > kernel-2.6.18-128.el5 Thanks for the details. "cat /dev/oprofile/cpu_type" returns "x86-64/hammer" right? What sample rate are you seeing for the individual events: sudo opcontrol -e L2_CACHE_MISS:50000 sudo opcontrol -e REQUEST_TO_L2:50000 It might be possible that the machine can handle the sample rate of one of the events but not both. Do things work with using a larger sampling interval like the following: sudo opcontrol -e L2_CACHE_MISS:500000 -e REQUEST_TO_L2:500000 If that does work, then we need to revise the minimum to be something more reasonable. Right now they are 500 which is extremely low. -Will |