rmuir commented on PR #12311: URL: https://github.com/apache/lucene/pull/12311#issuecomment-1560217999
And my concern is not "oh but nehalem or others without AVX are ancient ancient hardware". It is that if you run qemu with all its defaults and don't specify `-cpu` flag, you get a VM without AVX. Such VMs without AVX passed thru are very common in virtual computing environments for reasons like this. We shouldn't have incredibly trappy performance. ``` processor : 3 vendor_id : GenuineIntel cpu family : 15 model : 107 model name : QEMU Virtual CPU version 2.5+ stepping : 1 microcode : 0x1 cpu MHz : 2496.002 cache size : 16384 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl xtopology cpuid tsc_known_freq pni cx16 x2apic hypervisor lahf_lm cpuid_fault bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit mmio_unknown bogomips : 4994.00 clflush size : 64 cache_alignment : 128 address sizes : 40 bits physical, 48 bits virtual power management: ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
