From: Xishi Qiu <qiuxishi@huawei.com>
To: "Daniel K." <dk@syse.no>
Cc: Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] why the amount of cache from "free -m" and /proc/meminfo are different?
Date: Sat, 6 Feb 2016 09:19:40 +0800 [thread overview]
Message-ID: <56B54A2C.5010407@huawei.com> (raw)
In-Reply-To: <56B48B2D.4020502@syse.no>
On 2016/2/5 19:44, Daniel K. wrote:
> On 02/05/2016 07:50 AM, Xishi Qiu wrote:
>> [root@localhost ~]# free -m
>> total used free shared buff/cache available
>> Mem: 48295 574 41658 8 6062 46344
>> Swap: 24191 0 24191
>>
>> [root@localhost ~]# cat /proc/meminfo
>> Buffers: 0 kB
>> Cached: 3727824 kB
>> Slab: 2480092 kB
>
> free and meminfo seems to match up pretty well to me.
>
> Are you really asking about display in MB vs kB?
>
Hi Daniel,
No, I mean "Cached: 3727824 kB" and "buff/cache 6062M" are different.
Does "buff/cache" include Buffers, Cached, and Slab?
Thanks,
Xishi Qiu
> Drop the -m switch to free.
>
> Also, give 'man free' a spin, it explains what's behind the numbers.
>
>
> Daniel K.
>
> .
>
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WARNING: multiple messages have this Message-ID (diff)
From: Xishi Qiu <qiuxishi@huawei.com>
To: "Daniel K." <dk@syse.no>
Cc: Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] why the amount of cache from "free -m" and /proc/meminfo are different?
Date: Sat, 6 Feb 2016 09:19:40 +0800 [thread overview]
Message-ID: <56B54A2C.5010407@huawei.com> (raw)
In-Reply-To: <56B48B2D.4020502@syse.no>
On 2016/2/5 19:44, Daniel K. wrote:
> On 02/05/2016 07:50 AM, Xishi Qiu wrote:
>> [root@localhost ~]# free -m
>> total used free shared buff/cache available
>> Mem: 48295 574 41658 8 6062 46344
>> Swap: 24191 0 24191
>>
>> [root@localhost ~]# cat /proc/meminfo
>> Buffers: 0 kB
>> Cached: 3727824 kB
>> Slab: 2480092 kB
>
> free and meminfo seems to match up pretty well to me.
>
> Are you really asking about display in MB vs kB?
>
Hi Daniel,
No, I mean "Cached: 3727824 kB" and "buff/cache 6062M" are different.
Does "buff/cache" include Buffers, Cached, and Slab?
Thanks,
Xishi Qiu
> Drop the -m switch to free.
>
> Also, give 'man free' a spin, it explains what's behind the numbers.
>
>
> Daniel K.
>
> .
>
next prev parent reply other threads:[~2016-02-06 1:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-05 7:50 [RFC] why the amount of cache from "free -m" and /proc/meminfo are different? Xishi Qiu
2016-02-05 7:50 ` Xishi Qiu
2016-02-05 11:44 ` Daniel K.
2016-02-05 11:44 ` Daniel K.
2016-02-06 1:19 ` Xishi Qiu [this message]
2016-02-06 1:19 ` Xishi Qiu
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