--Apple-Mail=_CED911C3-7C7E-410B-BE69-0AA7F08A6F09 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii I'm playing with perf in vm and getting inconsistent result. But I = wonder if it's a kvm, ovirt or hardware problem. On a ovirt's vm: $ sudo perf list | grep Hardware | wc -l 1 $ lscpu ... Model name: Intel Core Processor (Haswell, no TSX) On another ovirt's vm: $ sudo perf list | grep Hardware | wc -l 27 $ lscpu ... Model name: AMD Opteron 23xx (Gen 3 Class Opteron) On a libvirtm vm: sudo perf list | grep Hardware | wc -l 1 lscpu ... Model name: Westmere E56xx/L56xx/X56xx (Nehalem-C) ... Look's like intel CPU don't expose hardware events. Is there an option = on kvm or ovirt to help that ? --Apple-Mail=_CED911C3-7C7E-410B-BE69-0AA7F08A6F09 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D"">I'm playing with perf in vm and getting inconsistent result. = But I wonder if it's a kvm, ovirt or hardware problem.<div class=3D""><br = class=3D""></div><div class=3D"">On a ovirt's vm:</div><div = class=3D""><div style=3D"margin: 0px; font-size: 11px; line-height: = normal; font-family: Menlo;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">$ sudo = perf list | grep Hardware | wc -l</span></div><div style=3D"margin: 0px; = font-size: 11px; line-height: normal; font-family: Menlo;" = class=3D""><span style=3D"font-variant-ligatures: no-common-ligatures" = class=3D"">1</span></div></div><div style=3D"margin: 0px; font-size: = 11px; line-height: normal; font-family: Menlo;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">$ = lscpu</span></div><div style=3D"margin: 0px; font-size: 11px; = line-height: normal; font-family: Menlo;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" = class=3D"">...</span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D""><div = style=3D"margin: 0px; font-size: 11px; line-height: normal; font-family: = Menlo;" class=3D""><span style=3D"font-variant-ligatures: = no-common-ligatures;" class=3D"">Model name: = Intel Core Processor (Haswell, no TSX)</span></div><div = class=3D""><span style=3D"font-variant-ligatures: no-common-ligatures;" = class=3D""><br class=3D""></span></div></span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">On = another ovirt's vm:</span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D""><div = style=3D"margin: 0px; font-size: 11px; line-height: normal; font-family: = Menlo;" class=3D""><span style=3D"font-variant-ligatures: = no-common-ligatures" class=3D"">$ sudo perf list | grep Hardware | wc = -l</span></div><div style=3D"margin: 0px; font-size: 11px; line-height: = normal; font-family: Menlo;" class=3D"">27</div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D""><div = style=3D"margin: 0px; font-size: 11px; line-height: normal; font-family: = Menlo;" class=3D""><span style=3D"font-variant-ligatures: = no-common-ligatures;" class=3D"">$ lscpu</span></div><div style=3D"margin:= 0px; font-size: 11px; line-height: normal; font-family: Menlo;" = class=3D""><span style=3D"font-variant-ligatures: no-common-ligatures;" = class=3D"">...</span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures;" = class=3D""></span></div></span></div><div style=3D"margin: 0px; = font-size: 11px; line-height: normal; font-family: Menlo;" = class=3D""><span style=3D"font-variant-ligatures: no-common-ligatures;" = class=3D"">Model name: AMD = Opteron 23xx (Gen 3 Class Opteron)</span></div><div class=3D""><br = class=3D""></div><div class=3D""><span style=3D"font-variant-ligatures: = no-common-ligatures" class=3D""><div style=3D"margin: 0px; font-size: = 11px; line-height: normal; font-family: Menlo;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">On a = libvirtm vm:</span></div><div style=3D"margin: 0px; font-size: 11px; = line-height: normal; font-family: Menlo;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D""><div = style=3D"margin: 0px; line-height: normal;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">sudo = perf list | grep Hardware | wc -l</span></div><div style=3D"margin: 0px; = line-height: normal;" class=3D"">1</div><div style=3D"margin: 0px; = line-height: normal;" class=3D""><div style=3D"margin: 0px; line-height: = normal;" class=3D""><span style=3D"font-variant-ligatures: = no-common-ligatures" class=3D"">lscpu</span></div><div style=3D"margin: = 0px; line-height: normal;" class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" = class=3D"">...</span></div></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">Model = name: Westmere = E56xx/L56xx/X56xx (Nehalem-C)</span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" = class=3D"">...</span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D""><br = class=3D""></span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D"">Look's = like intel CPU don't expose hardware events. Is there an option on kvm = or ovirt to help that ?</span></div><div class=3D""><span = style=3D"font-variant-ligatures: no-common-ligatures" class=3D""><br = class=3D""></span></div></span></div></span></div></span></div></body></ht= ml>= --Apple-Mail=_CED911C3-7C7E-410B-BE69-0AA7F08A6F09--