Re: How long does it take to run the full rustc bootstrap chain?

[Maxim Cournoyer]

Hi,

bokr@bokr.com writes:

[...]

> I'm curious what
>
> $ lsblk -o size,model,type,tran,vendor,name|grep -Ei 'ssd|model';echo;lspci 
> |grep -i nvme
>
> on your relevant machines would show.
>
> I opted for the best SSD available for my purism librem13v4 at the time,
> and was really happy with seems like 10x faster than the SATA SSD in my older
> but still i7 x86_64 previous laptop. Prob really 4-5x faster.
>
> So above combo command line now gives me
>
> SIZE MODEL                          TYPE  TRAN   VENDOR   NAME
> 465.8G Samsung SSD 970 EVO Plus 500GB disk  nvme            nvme0n1
>
> 01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD 
> Controller SM981/PM981
> $ 
>
> What /is/has been/ on your machines? Could your improved times be part from 
> SSD/controller changes?
>
> There's really a huge difference  between SATA and 4-lane pci
> (where both ends can handle it, which may require fw update or not be 
> available)
> Obviously 4 lanes is also going to be faster than one.

--8<---------------cut here---------------start------------->8---
$ lsblk -o size,model,type,tran,vendor,name|grep -Ei 'ssd|model';echo;lspci 
|grep -i nvme
  SIZE MODEL                      TYPE  TRAN   VENDOR   NAME
465.8G Samsung SSD 860 EVO 500GB  disk  sata   ATA      sda
931.5G Samsung SSD 840 EVO 1TB    disk  sata   ATA      sdc
--8<---------------cut here---------------end--------------->8---

Building Rust is mostly CPU dependent; I think fast single thread
performance is key as not that much happen in parallel, IIRC.  The 3900X
is a 12 cores (24 logical) beast.

-- 
Thanks,
Maxim