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

Reply via email to