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From: Xishi Qiu <qiuxishi@huawei.com>
To: Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [question] hugetlb: how to find who use hugetlb?
Date: Mon, 19 Sep 2016 10:39:38 +0800	[thread overview]
Message-ID: <57DF4FEA.9080509@huawei.com> (raw)

On my system, I set HugePages_Total to 2G(1024 x 2M), and I use 1G hugetlb,
but the HugePages_Free is not 1G(512 x 2M), it is 280(280 x 2M) left,
HugePages_Rsvd is 0, it seems someone use 232(232 x 2M) hugetlb additionally.

So how to find who use the additional hugetlb? 

I search every process and find the total hugetlb size is only 1G,
cat /proc/xx/smaps | grep KernelPageSize, then account the vma size
which KernelPageSize is 2048 kB.

Thanks,
Xishi Qiu

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WARNING: multiple messages have this Message-ID (diff)
From: Xishi Qiu <qiuxishi@huawei.com>
To: Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [question] hugetlb: how to find who use hugetlb?
Date: Mon, 19 Sep 2016 10:39:38 +0800	[thread overview]
Message-ID: <57DF4FEA.9080509@huawei.com> (raw)

On my system, I set HugePages_Total to 2G(1024 x 2M), and I use 1G hugetlb,
but the HugePages_Free is not 1G(512 x 2M), it is 280(280 x 2M) left,
HugePages_Rsvd is 0, it seems someone use 232(232 x 2M) hugetlb additionally.

So how to find who use the additional hugetlb? 

I search every process and find the total hugetlb size is only 1G,
cat /proc/xx/smaps | grep KernelPageSize, then account the vma size
which KernelPageSize is 2048 kB.

Thanks,
Xishi Qiu

             reply	other threads:[~2016-09-19  2:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-19  2:39 Xishi Qiu [this message]
2016-09-19  2:39 ` [question] hugetlb: how to find who use hugetlb? Xishi Qiu
2016-09-20  2:46 ` Xishi Qiu
2016-09-20  2:46   ` Xishi Qiu
2016-09-20  4:05   ` Hillf Danton
2016-09-20  4:29     ` Xishi Qiu
2016-09-20  6:47       ` Hillf Danton
2016-09-20  7:09         ` Xishi Qiu
2016-09-20  7:15           ` Hillf Danton

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