From: Nhat Pham <nphamcs@gmail.com>
To: Yosry Ahmed <yosryahmed@google.com>
Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
hannes@cmpxchg.org, ryan.roberts@arm.com, ying.huang@intel.com,
21cnbao@gmail.com, akpm@linux-foundation.org,
nanhai.zou@intel.com, wajdi.k.feghali@intel.com,
vinodh.gopal@intel.com
Subject: Re: [PATCH v5 0/3] mm: ZSWAP swap-out of mTHP folios
Date: Thu, 29 Aug 2024 16:47:58 -0700 [thread overview]
Message-ID: <CAKEwX=Nak1J30bDmavQZH3SrcmP9hj2X7wYg-eX=k-jb_p+T=g@mail.gmail.com> (raw)
In-Reply-To: <CAJD7tkZnT2_JD90xAt09Uk6Lsc6C8t0V5dpUOKLLknw75yUqkA@mail.gmail.com>
On Thu, Aug 29, 2024 at 4:39 PM Yosry Ahmed <yosryahmed@google.com> wrote:
>
> Interesting. If CONFIG_THP_SWAP is enabled this basically means your
> zswap utilization keeps going down as your THP utilization goes up. So
> the swapin cost would go higher. How do you deal with that?
Johannes definitely knows more than me about this, so please fact
check me. But my understanding is we don't get enough THP for this to
become a problem just yet :)
But yes, we're working hard to make THP become more readily available.
Which will lead to the problem you're describing, hence my enthusiasm
in this work :)
next prev parent reply other threads:[~2024-08-29 23:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-28 9:35 Kanchana P Sridhar
2024-08-28 9:35 ` [PATCH v5 1/3] mm: Define obj_cgroup_get() if CONFIG_MEMCG is not defined Kanchana P Sridhar
2024-08-28 9:35 ` [PATCH v5 2/3] mm: zswap: zswap_store() extended to handle mTHP folios Kanchana P Sridhar
2024-08-28 9:35 ` [PATCH v5 3/3] mm: swap: Count successful mTHP ZSWAP stores in sysfs mTHP zswpout stats Kanchana P Sridhar
2024-08-28 15:55 ` [PATCH v5 0/3] mm: ZSWAP swap-out of mTHP folios Nhat Pham
2024-08-28 17:23 ` Nhat Pham
2024-08-28 19:30 ` Sridhar, Kanchana P
2024-08-28 19:24 ` Sridhar, Kanchana P
2024-08-28 21:35 ` Nhat Pham
2024-08-29 0:06 ` Sridhar, Kanchana P
2024-08-29 17:10 ` Nhat Pham
2024-08-29 19:38 ` Sridhar, Kanchana P
2024-08-30 4:52 ` Chengming Zhou
2024-09-20 2:34 ` Sridhar, Kanchana P
2024-08-29 3:59 ` Sridhar, Kanchana P
2024-08-28 22:37 ` Yosry Ahmed
2024-08-29 0:20 ` Sridhar, Kanchana P
2024-08-29 1:01 ` Yosry Ahmed
2024-08-29 3:10 ` Sridhar, Kanchana P
2024-08-29 23:33 ` Nhat Pham
2024-08-29 23:38 ` Yosry Ahmed
2024-08-29 23:47 ` Nhat Pham [this message]
2024-08-29 23:55 ` Yosry Ahmed
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