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Date:      Wed, 30 Dec 2020 17:40:34 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 243401] [patch] ahci driver problems with Marvell 88SE9230 (Dell BOSS-S1)
Message-ID:  <bug-243401-227-UfVTldvpyP@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-243401-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-243401-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243401

--- Comment #5 from Alexander Motin <mav@FreeBSD.org> ---
Peter, your patch is inconsistent in the timeout values.  You are using 100=
00
on line 2614, but 5000 on lines 2634 and 2638.  That discrepancy may
potentially cause random weird effects.  Though it does not explain to me w=
hat
I see in the provided messages.  I can not match it to the patch provided. =
 I
guess you was running something different.

Also synchronous wait for half a second for every empty port in a system is=
 not
great. JFYI IIRC VMware emulates AHCI with 31 port.  Have you tried to meas=
ure
time between "SATA status changed 00000000" and "SATA status changed 000000=
01"
messages?  It it happen faster it would allow to not increase the timeout on
line 2634, not waiting for devices on completely empty ports.

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