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From: Nadia Derbey <Nadia.Derbey@bull.net>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: containers@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org, cmm@us.ibm.com,
	akpm@linux-foundation.org
Subject: Re: [PATCH 1/8] Scaling msgmni to the amount of lowmem
Date: Wed, 07 May 2008 07:13:10 +0200	[thread overview]
Message-ID: <48213A66.5030502@bull.net> (raw)
In-Reply-To: <1FE6DD409037234FAB833C420AA843EC014392F9@orsmsx424.amr.corp.intel.com>

Luck, Tony wrote:
>>Well, this printk had been suggested by somebody (sorry I don't remember 
>>who) when I first submitted the patch. Actually I think it might be 
>>useful for a sysadmin to be aware of a change in the msgmni value: we 
>>have the message not only at boot time, but also each time msgmni is 
>>recomputed because of a change in the amount of memory.
> 
> 
> If the message is directed at the system administrator, then it would
> be nice if there were some more meaningful way to show the namespace
> that is affected than just printing the hex address of the kernel structure.
> 
> As the sysadmin for my test systems, printing the hex address is mildly
> annoying ... I now have to add a new case to my scripts that look at
> dmesg output for unusual activity.
> 
> Is there some better "name for a namespace" than the address? Perhaps
> the process id of the process that instantiated the namespace???
> 

Unfortunately no when we are inside an ipc namespace, we don't have such 
interesting informations. But I agree with you, an address is not 
readable enough. I'll try to find a solution.

Regards,
Nadia


WARNING: multiple messages have this Message-ID (diff)
From: Nadia Derbey <Nadia.Derbey@bull.net>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: containers@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org, cmm@us.ibm.com,
	akpm@linux-foundation.org
Subject: Re: [PATCH 1/8] Scaling msgmni to the amount of lowmem
Date: Wed, 07 May 2008 07:13:10 +0200	[thread overview]
Message-ID: <48213A66.5030502@bull.net> (raw)
In-Reply-To: <1FE6DD409037234FAB833C420AA843EC014392F9@orsmsx424.amr.corp.intel.com>

Luck, Tony wrote:
>>Well, this printk had been suggested by somebody (sorry I don't remember 
>>who) when I first submitted the patch. Actually I think it might be 
>>useful for a sysadmin to be aware of a change in the msgmni value: we 
>>have the message not only at boot time, but also each time msgmni is 
>>recomputed because of a change in the amount of memory.
> 
> 
> If the message is directed at the system administrator, then it would
> be nice if there were some more meaningful way to show the namespace
> that is affected than just printing the hex address of the kernel structure.
> 
> As the sysadmin for my test systems, printing the hex address is mildly
> annoying ... I now have to add a new case to my scripts that look at
> dmesg output for unusual activity.
> 
> Is there some better "name for a namespace" than the address? Perhaps
> the process id of the process that instantiated the namespace???
> 

Unfortunately no when we are inside an ipc namespace, we don't have such 
interesting informations. But I agree with you, an address is not 
readable enough. I'll try to find a solution.

Regards,
Nadia

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  parent reply	other threads:[~2008-05-07  5:13 UTC|newest]

Thread overview: 117+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-11 14:16 [PATCH 0/8] Change default MSGMNI tunable to scale with lowmem (v3) Nadia.Derbey
2008-02-11 14:16 ` Nadia.Derbey
2008-02-11 14:16 ` [PATCH 1/8] Scaling msgmni to the amount of lowmem Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-04-29 20:28   ` Tony Luck
2008-04-29 20:28     ` Tony Luck
2008-05-05  8:45     ` Nadia Derbey
2008-05-05  8:45       ` Nadia Derbey
2008-05-06 16:42       ` Luck, Tony
2008-05-06 16:42         ` Luck, Tony
     [not found]         ` <1FE6DD409037234FAB833C420AA843EC014392F9-7XlYjKTK0pM64kNsxIetb7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2008-05-06 18:05           ` Serge E. Hallyn
2008-05-07  5:13           ` Nadia Derbey
2008-05-06 18:05         ` Serge E. Hallyn
2008-05-06 18:05           ` Serge E. Hallyn
     [not found]           ` <20080506180527.GA8315-6s5zFf/epYLPQpwDFJZrxKsjOiXwFzmk@public.gmane.org>
2008-05-07  5:37             ` Nadia Derbey
2008-05-07  5:37           ` Nadia Derbey
2008-05-07  5:37             ` Nadia Derbey
2008-05-07 13:17             ` Serge E. Hallyn
2008-05-07 13:17               ` Serge E. Hallyn
     [not found]               ` <20080507131712.GA8580-6s5zFf/epYLPQpwDFJZrxKsjOiXwFzmk@public.gmane.org>
2008-05-07 18:12                 ` Matt Helsley
2008-05-07 18:12               ` Matt Helsley
2008-05-07 18:12                 ` Matt Helsley
     [not found]             ` <48214007.7050800-6ktuUTfB/bM@public.gmane.org>
2008-05-07 13:17               ` Serge E. Hallyn
2008-05-07  5:13         ` Nadia Derbey [this message]
2008-05-07  5:13           ` Nadia Derbey
     [not found]       ` <481EC917.6070808-6ktuUTfB/bM@public.gmane.org>
2008-05-06 16:42         ` Luck, Tony
     [not found]     ` <12c511ca0804291328v2f0b87csd0f2cf3accc6ad00-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-05-05  8:45       ` Nadia Derbey
     [not found]   ` <20080211141813.354484000-6ktuUTfB/bM@public.gmane.org>
2008-02-16  5:59     ` Andrew Morton
2008-02-16  5:59       ` Andrew Morton
2008-02-16  5:59       ` Andrew Morton
2008-02-18  9:19       ` Nadia Derbey
2008-02-18  9:19         ` Nadia Derbey
2008-02-18 13:08         ` Nadia Derbey
2008-02-18 13:08           ` Nadia Derbey
2008-02-19  8:50           ` [LTP] " Subrata Modak
2008-02-19  8:50             ` Subrata Modak
2008-02-19 17:16             ` Nadia Derbey
2008-02-19 22:16               ` Matt Helsley
2008-02-19 22:16                 ` Matt Helsley
2008-02-21  8:39                 ` Nadia Derbey
2008-02-21  8:39                   ` Nadia Derbey
     [not found]                 ` <1203459418.7408.39.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-02-21  8:39                   ` Nadia Derbey
2008-02-21 12:36                   ` Nadia Derbey
2008-02-21 12:36                 ` Nadia Derbey
2008-02-21 12:36                   ` Nadia Derbey
2008-02-21 13:02                   ` Nadia Derbey
2008-02-21 13:39                     ` Subrata Modak
2008-02-21 13:39                       ` Subrata Modak
2008-02-22  6:25                       ` Nadia Derbey
2008-02-22  8:41                         ` Subrata Modak
2008-02-22  8:41                           ` Subrata Modak
     [not found]                         ` <47BE6AD0.6070309-6ktuUTfB/bM@public.gmane.org>
2008-02-22  8:41                           ` Subrata Modak
     [not found]                       ` <1203601178.4604.18.camel-NRFfyExJdYpgXGGE5LP+UZlqa2bBAFbm0E9HWUfgJXw@public.gmane.org>
2008-02-22  6:25                         ` Nadia Derbey
     [not found]                     ` <47BD7648.5010309-6ktuUTfB/bM@public.gmane.org>
2008-02-21 13:39                       ` Subrata Modak
     [not found]                   ` <47BD705A.9020309-6ktuUTfB/bM@public.gmane.org>
2008-02-21 13:02                     ` Nadia Derbey
     [not found]               ` <47BB0EDC.5000002-6ktuUTfB/bM@public.gmane.org>
2008-02-19 22:16                 ` Matt Helsley
2008-02-20  9:44                 ` Subrata Modak
2008-02-20  9:44               ` Subrata Modak
2008-02-20  9:44                 ` Subrata Modak
     [not found]             ` <1203411055.4612.5.camel-NRFfyExJdYpgXGGE5LP+UZlqa2bBAFbm0E9HWUfgJXw@public.gmane.org>
2008-02-19 17:16               ` Nadia Derbey
     [not found]           ` <47B9835A.3060507-6ktuUTfB/bM@public.gmane.org>
2008-02-19  8:50             ` Subrata Modak
     [not found]         ` <47B94D8C.8040605-6ktuUTfB/bM@public.gmane.org>
2008-02-18 13:08           ` Nadia Derbey
     [not found]       ` <20080215215916.8566d337.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2008-02-18  9:19         ` Nadia Derbey
2008-04-29 20:28     ` Tony Luck
2008-02-11 14:16 ` [PATCH 2/8] Scaling msgmni to the number of ipc namespaces Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 14:16 ` [PATCH 3/8] Defining the slab_memory_callback priority as a constant Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 14:16 ` Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` [PATCH 4/8] Recomputing msgmni on memory add / remove Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 14:16 ` [PATCH 5/8] Invoke the ipcns notifier chain as a work item Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 14:16 ` Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` [PATCH 6/8] Recomputing msgmni on ipc namespace creation/removal Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 14:16 ` [PATCH 7/8] Do not recompute msgmni anymore if explicitely set by user Nadia.Derbey-6ktuUTfB/bM
2008-02-11 14:16 ` Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 20:24   ` Andrew Morton
2008-02-11 20:24     ` Andrew Morton
     [not found]     ` <20080211122408.5008902f.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2008-02-12  9:32       ` Nadia Derbey
2008-02-12  9:32     ` Nadia Derbey
     [not found]       ` <47B167AF.6010008-6ktuUTfB/bM@public.gmane.org>
2008-02-12  9:44         ` Andrew Morton
2008-02-12  9:44           ` Andrew Morton
2008-02-12  9:44           ` Andrew Morton
2008-02-12 15:15           ` Nadia Derbey
2008-02-12 15:15             ` Nadia Derbey
     [not found]             ` <47B1B7F4.8080009-6ktuUTfB/bM@public.gmane.org>
2008-02-12 19:44               ` Andrew Morton
2008-02-12 19:44                 ` Andrew Morton
2008-02-12 19:44                 ` Andrew Morton
     [not found]                 ` <20080212114439.e08085f1.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2008-02-14 11:47                   ` Nadia Derbey
2008-02-14 11:47                 ` Nadia Derbey
2008-02-14 11:47                   ` Nadia Derbey
     [not found]           ` <20080212014444.8bc3791b.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2008-02-12 15:15             ` Nadia Derbey
2008-02-12  9:45         ` Nadia Derbey
2008-02-12  9:45           ` Nadia Derbey
     [not found]   ` <20080211141816.094061000-6ktuUTfB/bM@public.gmane.org>
2008-02-11 20:24     ` Andrew Morton
2008-02-11 14:16 ` [PATCH 8/8] Re-enable msgmni automatic recomputing msgmni if set to negative Nadia.Derbey
2008-02-11 14:16   ` Nadia.Derbey
2008-02-11 20:27   ` Andrew Morton
2008-02-11 20:27     ` Andrew Morton
     [not found]     ` <20080211122748.64e7bc36.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2008-02-12 11:38       ` Nadia Derbey
2008-02-12 11:38     ` Nadia Derbey
2008-02-12 11:38       ` Nadia Derbey
     [not found]   ` <20080211141816.520049000-6ktuUTfB/bM@public.gmane.org>
2008-02-11 20:27     ` Andrew Morton
2008-02-11 14:16 ` Nadia.Derbey-6ktuUTfB/bM
  -- strict thread matches above, loose matches on Subject: below --
2008-05-20 14:28 [PATCH 1/8] Scaling msgmni to the amount of lowmem Michael Kerrisk
2008-05-20 14:45 ` Nadia Derbey
2008-05-20 14:56   ` Michael Kerrisk
2008-05-20 14:56     ` Michael Kerrisk
2008-05-21 10:47   ` Michael Kerrisk
2008-05-21 10:47     ` Michael Kerrisk

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