From: David Ahern <david.ahern@oracle.com>
To: David Miller <davem@davemloft.net>
Cc: torvalds@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org
Subject: Re: 4.0.0-rc4: panic in free_block
Date: Fri, 20 Mar 2015 19:54:09 +0000 [thread overview]
Message-ID: <550C7AE1.1000808@oracle.com> (raw)
In-Reply-To: <20150320.154700.1250039074828760104.davem@davemloft.net>
On 3/20/15 1:47 PM, David Miller wrote:
> From: David Ahern <david.ahern@oracle.com>
> Date: Fri, 20 Mar 2015 12:05:05 -0600
>
>> DaveM: do you mind if I submit a patch to change the default for sparc
>> to SLUB?
>
> I think we're jumping the gun about all of this, and doing anything
> with default Kconfig settings would be entirely premature until we
> know what the real bug is.
The suggestion to change to SLUB as the default was based on Linus'
comment "SLAB is probably also almost unheard of in high-CPU
configurations, since slub has all the magical unlocked lists etc for
scalability."
>
> On my T4-2 I've used nothing but SLAB and haven't hit any of these
> problems. I can't even remember the last time I turned SLUB on,
> and it's just because I'm lazy.
>
Interesting. With -j <64 and talking softly it completes. But -j 128 and
higher always ends in a panic.
WARNING: multiple messages have this Message-ID (diff)
From: David Ahern <david.ahern@oracle.com>
To: David Miller <davem@davemloft.net>
Cc: torvalds@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org
Subject: Re: 4.0.0-rc4: panic in free_block
Date: Fri, 20 Mar 2015 13:54:09 -0600 [thread overview]
Message-ID: <550C7AE1.1000808@oracle.com> (raw)
In-Reply-To: <20150320.154700.1250039074828760104.davem@davemloft.net>
On 3/20/15 1:47 PM, David Miller wrote:
> From: David Ahern <david.ahern@oracle.com>
> Date: Fri, 20 Mar 2015 12:05:05 -0600
>
>> DaveM: do you mind if I submit a patch to change the default for sparc
>> to SLUB?
>
> I think we're jumping the gun about all of this, and doing anything
> with default Kconfig settings would be entirely premature until we
> know what the real bug is.
The suggestion to change to SLUB as the default was based on Linus'
comment "SLAB is probably also almost unheard of in high-CPU
configurations, since slub has all the magical unlocked lists etc for
scalability."
>
> On my T4-2 I've used nothing but SLAB and haven't hit any of these
> problems. I can't even remember the last time I turned SLUB on,
> and it's just because I'm lazy.
>
Interesting. With -j <64 and talking softly it completes. But -j 128 and
higher always ends in a panic.
--
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WARNING: multiple messages have this Message-ID (diff)
From: David Ahern <david.ahern@oracle.com>
To: David Miller <davem@davemloft.net>
Cc: torvalds@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org
Subject: Re: 4.0.0-rc4: panic in free_block
Date: Fri, 20 Mar 2015 13:54:09 -0600 [thread overview]
Message-ID: <550C7AE1.1000808@oracle.com> (raw)
In-Reply-To: <20150320.154700.1250039074828760104.davem@davemloft.net>
On 3/20/15 1:47 PM, David Miller wrote:
> From: David Ahern <david.ahern@oracle.com>
> Date: Fri, 20 Mar 2015 12:05:05 -0600
>
>> DaveM: do you mind if I submit a patch to change the default for sparc
>> to SLUB?
>
> I think we're jumping the gun about all of this, and doing anything
> with default Kconfig settings would be entirely premature until we
> know what the real bug is.
The suggestion to change to SLUB as the default was based on Linus'
comment "SLAB is probably also almost unheard of in high-CPU
configurations, since slub has all the magical unlocked lists etc for
scalability."
>
> On my T4-2 I've used nothing but SLAB and haven't hit any of these
> problems. I can't even remember the last time I turned SLUB on,
> and it's just because I'm lazy.
>
Interesting. With -j <64 and talking softly it completes. But -j 128 and
higher always ends in a panic.
next prev parent reply other threads:[~2015-03-20 19:54 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-20 15:07 4.0.0-rc4: panic in free_block David Ahern
2015-03-20 15:07 ` David Ahern
2015-03-20 16:48 ` Linus Torvalds
2015-03-20 16:48 ` Linus Torvalds
2015-03-20 16:48 ` Linus Torvalds
2015-03-20 16:53 ` David Ahern
2015-03-20 16:53 ` David Ahern
2015-03-20 16:53 ` David Ahern
2015-03-20 16:58 ` Linus Torvalds
2015-03-20 16:58 ` Linus Torvalds
2015-03-20 16:58 ` Linus Torvalds
2015-03-20 18:05 ` David Ahern
2015-03-20 18:05 ` David Ahern
2015-03-20 18:05 ` David Ahern
2015-03-20 18:53 ` Linus Torvalds
2015-03-20 18:53 ` Linus Torvalds
2015-03-20 18:53 ` Linus Torvalds
2015-03-20 19:04 ` David Ahern
2015-03-20 19:04 ` David Ahern
2015-03-20 19:04 ` David Ahern
2015-03-20 19:47 ` David Miller
2015-03-20 19:47 ` David Miller
2015-03-20 19:47 ` David Miller
2015-03-20 19:54 ` David Ahern [this message]
2015-03-20 19:54 ` David Ahern
2015-03-20 19:54 ` David Ahern
2015-03-20 20:19 ` David Miller
2015-03-20 20:19 ` David Miller
2015-03-20 20:19 ` David Miller
2015-03-20 19:42 ` David Miller
2015-03-20 19:42 ` David Miller
2015-03-20 19:42 ` David Miller
2015-03-20 20:01 ` Dave Hansen
2015-03-20 20:01 ` Dave Hansen
2015-03-20 20:01 ` Dave Hansen
2015-03-20 21:17 ` Linus Torvalds
2015-03-20 21:17 ` Linus Torvalds
2015-03-20 22:49 ` David Ahern
2015-03-20 22:49 ` David Ahern
2015-03-21 0:18 ` David Ahern
2015-03-21 0:18 ` David Ahern
2015-03-21 0:34 ` David Rientjes
2015-03-21 0:34 ` David Rientjes
2015-03-21 0:39 ` David Ahern
2015-03-21 0:39 ` David Ahern
2015-03-21 0:47 ` Linus Torvalds
2015-03-21 0:47 ` Linus Torvalds
2015-03-21 17:45 ` David Ahern
2015-03-21 17:45 ` David Ahern
2015-03-21 18:49 ` Linus Torvalds
2015-03-21 18:49 ` Linus Torvalds
2015-03-21 18:49 ` Linus Torvalds
2015-03-22 17:36 ` David Miller
2015-03-22 17:36 ` David Miller
2015-03-22 17:36 ` David Miller
2015-03-22 19:25 ` Bob Picco
2015-03-22 19:25 ` Bob Picco
2015-03-22 19:25 ` Bob Picco
2015-03-22 19:47 ` Linus Torvalds
2015-03-22 19:47 ` Linus Torvalds
2015-03-22 19:47 ` Linus Torvalds
2015-03-22 22:23 ` David Miller
2015-03-22 22:23 ` David Miller
2015-03-22 22:23 ` David Miller
2015-03-22 23:35 ` David Ahern
2015-03-22 23:35 ` David Ahern
2015-03-22 23:35 ` David Ahern
2015-03-22 23:54 ` David Miller
2015-03-22 23:54 ` David Miller
2015-03-22 23:54 ` David Miller
2015-03-23 0:03 ` David Ahern
2015-03-23 0:03 ` David Ahern
2015-03-23 0:03 ` David Ahern
2015-03-23 2:00 ` David Miller
2015-03-23 2:00 ` David Miller
2015-03-23 2:00 ` David Miller
2015-03-23 2:19 ` David Miller
2015-03-23 2:19 ` David Miller
2015-03-23 2:19 ` David Miller
2015-03-23 16:25 ` David Miller
2015-03-23 16:25 ` David Miller
2015-03-23 16:25 ` David Miller
2015-03-23 16:51 ` John Stoffel
2015-03-23 16:51 ` John Stoffel
2015-03-23 16:51 ` John Stoffel
2015-03-23 19:16 ` David Miller
2015-03-23 19:16 ` David Miller
2015-03-23 19:16 ` David Miller
2015-03-23 19:56 ` John Stoffel
2015-03-23 19:56 ` John Stoffel
2015-03-23 19:56 ` John Stoffel
2015-03-23 20:08 ` David Miller
2015-03-23 20:08 ` David Miller
2015-03-23 20:08 ` David Miller
2015-03-23 17:00 ` Linus Torvalds
2015-03-23 17:00 ` Linus Torvalds
2015-03-23 17:00 ` Linus Torvalds
2015-03-23 19:08 ` David Miller
2015-03-23 19:08 ` David Miller
2015-03-23 19:08 ` David Miller
2015-03-23 19:47 ` Linus Torvalds
2015-03-23 19:47 ` Linus Torvalds
2015-03-23 19:47 ` Linus Torvalds
2015-03-23 19:52 ` David Miller
2015-03-23 19:52 ` David Miller
2015-03-23 19:52 ` David Miller
2015-03-23 17:34 ` David Ahern
2015-03-23 17:34 ` David Ahern
2015-03-23 17:34 ` David Ahern
2015-03-23 19:35 ` David Miller
2015-03-23 19:35 ` David Miller
2015-03-23 19:35 ` David Miller
2015-03-23 19:58 ` David Ahern
2015-03-23 19:58 ` David Ahern
2015-03-23 19:58 ` David Ahern
2015-03-24 1:01 ` David Ahern
2015-03-24 1:01 ` David Ahern
2015-03-24 1:01 ` David Ahern
2015-03-24 14:57 ` Bob Picco
2015-03-24 14:57 ` Bob Picco
2015-03-24 14:57 ` Bob Picco
2015-03-24 16:05 ` David Miller
2015-03-24 16:05 ` David Miller
2015-03-24 16:05 ` David Miller
2015-03-22 23:49 ` Linus Torvalds
2015-03-22 23:49 ` Linus Torvalds
2015-03-22 23:49 ` Linus Torvalds
2015-03-22 23:57 ` David Miller
2015-03-22 23:57 ` David Miller
2015-03-22 23:57 ` David Miller
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