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Date:      Sat, 4 Jun 2005 15:48:55 +0100 (BST)
From:      Robert Watson <rwatson@FreeBSD.org>
To:        Anthony Ginepro <anthony.ginepro@laposte.net>
Cc:        Jeff Roberson <jroberson@chesapeake.net>, current@freebsd.org
Subject:   Re: ULE Status.
Message-ID:  <20050604154819.E89392@fledge.watson.org>
In-Reply-To: <1117893647.1246.8.camel@renaissance.homeip.net>
References:  <20050604052429.T8209@mail.chesapeake.net> <1117893647.1246.8.camel@renaissance.homeip.net>

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On Sat, 4 Jun 2005, Anthony Ginepro wrote:

> However since a few weeks 6-CURRENT interactivity under I/O load isn't 
> what it used to be. Uncompressing jdk14 makes the system slows down 
> heavily, mouse pointer jerked and sound system chopped.
>
> I was hoping that ULE could help however it didn't improve much more 
> than 4BSD. I suppose there's something else to tweak in order to have 
> good interactivity under I/O load ?

Can you identify a threshold date, or better yet, commit, where the 
problem began?  Some searching through kernel dates would be very helpful.

Robert N M Watson

>
> Anthony.
>
>> ---------- Forwarded message ----------
>> Date: Sat, 4 Jun 2005 09:23:29 +0000 (UTC)
>> From: Jeff Roberson <jeff@FreeBSD.org>
>> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
>> Subject: cvs commit: src/sys/kern sched_ule.c
>>
>> jeff        2005-06-04 09:23:29 UTC
>>
>>   FreeBSD src repository
>>
>>   Modified files:
>>     sys/kern             sched_ule.c
>>   Log:
>>    - Don't SLOT_USE() in the preempt case, sched_add() has already taken the
>>      slot for us.  Previously, we would take two slots on every preempt, and
>>      setrunqueue() would fix it up for us in the non threaded case.  The
>>      threaded case was simply broken.
>>    - Clean up flags, prototypes, comments.
>>
>>   Revision  Changes    Path
>>   1.150     +37 -72    src/sys/kern/sched_ule.c
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