[Bug 263446] FreeBSD12.2 / FreeBSD12.3 mpr , smqrtpqi working slow, arcmsr is just fine

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263446

            Bug ID: 263446
           Summary: FreeBSD12.2 / FreeBSD12.3 mpr , smqrtpqi working slow,
                    arcmsr is just fine
           Product: Base System
           Version: 12.3-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: rpalov@e-card.bg

Hello all,

we face strange and bad situation. 

We have HBA LSI 9300 - SAS3008. 

One SSD WDC( 14T SAS ) server grade is working fine with it( 300-500 MB/sec )
but the new one SSD SAMSUNG( 14T SAS ) server grade  is very slow ( max 20
MB/sec ).

When we change that HBA with Areca in JBOD/HBA mode we can get 300-500MB/sec
from both SSDs. 

This is the same for FreeBSD 12.2 and FreeBSD 12.3

We try SAS3808/SAS3818 with other SSD SAMSUNG ( 8T SATA ) server grade on
FreeBSD12.3 and we can get max 20 MB/sec. 

Today we have received Adaptec 1100-8i. We this HBA we can get maximum 90MB/sec
from SSD WDC ( 14T SAS ) and 15-20MB/sec with SSD SAMSUNG ( 14T SAS ). 

So mpr and smarpqi are working slow, but arcmsr is just fine ..  

It seems there are changes in the kernel but they are not applied to the
drivers ? 

If you need more info and details just list them

Cheers
Rumen

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