From: Xishi Qiu <qiuxishi@huawei.com>
To: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@kernel.org>,
cl@linux.com, Pekka Enberg <penberg@kernel.org>,
iamjoonsoo.kim@lge.com, Andrew Morton <akpm@linux-foundation.org>,
zhong jiang <zhongjiang@huawei.com>,
Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: add ratio in slabinfo print
Date: Tue, 12 Jan 2016 09:05:06 +0800 [thread overview]
Message-ID: <56945142.5040509@huawei.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1601111619120.5824@chino.kir.corp.google.com>
On 2016/1/12 8:20, David Rientjes wrote:
> On Mon, 11 Jan 2016, Xishi Qiu wrote:
>
>>> On Mon 11-01-16 11:54:57, Xishi Qiu wrote:
>>>> Add ratio(active_objs/num_objs) in /proc/slabinfo, it is used to show
>>>> the availability factor in each slab.
>>>
>>> What is the reason to add such a new value when it can be trivially
>>> calculated from the userspace?
>>>
>>> Besides that such a change would break existing parsers no?
>>
>> Oh, maybe it is.
>>
>
> If you need the information internally, you could always create a library
> around slabinfo and export the information for users who are interested
> for your own use. Doing anything other than appending fields to each line
> is too dangerous, however, as a general rule.
>
>
OK, I know.
Thanks,
Xishi Qiu
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WARNING: multiple messages have this Message-ID (diff)
From: Xishi Qiu <qiuxishi@huawei.com>
To: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@kernel.org>, <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>, <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
zhong jiang <zhongjiang@huawei.com>,
Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: add ratio in slabinfo print
Date: Tue, 12 Jan 2016 09:05:06 +0800 [thread overview]
Message-ID: <56945142.5040509@huawei.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1601111619120.5824@chino.kir.corp.google.com>
On 2016/1/12 8:20, David Rientjes wrote:
> On Mon, 11 Jan 2016, Xishi Qiu wrote:
>
>>> On Mon 11-01-16 11:54:57, Xishi Qiu wrote:
>>>> Add ratio(active_objs/num_objs) in /proc/slabinfo, it is used to show
>>>> the availability factor in each slab.
>>>
>>> What is the reason to add such a new value when it can be trivially
>>> calculated from the userspace?
>>>
>>> Besides that such a change would break existing parsers no?
>>
>> Oh, maybe it is.
>>
>
> If you need the information internally, you could always create a library
> around slabinfo and export the information for users who are interested
> for your own use. Doing anything other than appending fields to each line
> is too dangerous, however, as a general rule.
>
>
OK, I know.
Thanks,
Xishi Qiu
next prev parent reply other threads:[~2016-01-12 1:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 3:54 [PATCH] mm: add ratio in slabinfo print Xishi Qiu
2016-01-11 3:54 ` Xishi Qiu
2016-01-11 12:25 ` Michal Hocko
2016-01-11 12:25 ` Michal Hocko
2016-01-11 13:15 ` Xishi Qiu
2016-01-11 13:15 ` Xishi Qiu
2016-01-11 13:39 ` Michal Hocko
2016-01-11 13:39 ` Michal Hocko
2016-01-12 0:20 ` David Rientjes
2016-01-12 0:20 ` David Rientjes
2016-01-12 1:05 ` Xishi Qiu [this message]
2016-01-12 1:05 ` Xishi Qiu
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