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Tue, 5 Dec 2023 20:11:41 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap2.dmz-prg2.suse.org with ESMTPSA id D4U2Ef2Db2UxbwAAn2gu4w (envelope-from ); Tue, 05 Dec 2023 20:11:41 +0000 Date: Tue, 5 Dec 2023 21:11:39 +0100 From: Petr Vorel To: Stefan Roesch Cc: kernel-team@fb.com, david@redhat.com, oliver.sang@intel.com, linux-mm@kvack.org, ltp@lists.linux.it, liwang@redhat.com Subject: Re: [PATCH v4 2/2] add ksm test for smart-scan feature Message-ID: <20231205201139.GA128077@pevik> Reply-To: Petr Vorel References: <20231205180952.3843711-1-shr@devkernel.io> <20231205180952.3843711-3-shr@devkernel.io> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231205180952.3843711-3-shr@devkernel.io> X-Rspamd-Queue-Id: 526192000C X-Rspam-User: X-Stat-Signature: 9gqir8ngm1kntyhi7gqh1zqgpxxfthc4 X-Rspamd-Server: rspam01 X-HE-Tag: 1701807104-311776 X-HE-Meta: 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 vnCAikSM 1r/oOcTSsqF0VQI5y4t8H0t5y5Ap/Jj60XspxzfIHFTYXmLOYVRbgmIKviu98RDefRSkVu9hRE9QbmrsqWGST7t+aedqZzqI/i6M3FyOZNTdDWIXDM0WNHMILIwckA1XUQ+mSECC+aDtKbABQjU7SL/oSQrBaVgU9BdKFZFuDdqOr+RcHZsmg/M4RQZBIW6uLTYT7bKVM4HmsTE+vFImSKLxxh4VfQCX1XOU3IGkTA4zb3LFsYhQwIsZXPgK2OJkA+5JzO342zXqGyUZw38DO8X6XmprduFXA7Hx2 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000061, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Stefan, > This adds a new ksm (kernel samepage merging) test to evaluate the new > smart scan feature. It allocates a page and fills it with 'a' > characters. It captures the pages_skipped counter, waits for a few > iterations and captures the pages_skipped counter again. The expectation > is that over 50% of the page scans are skipped (There is only one page > that has KSM enabled and it gets scanned during each iteration and it > cannot be de-duplicated). Thanks a lot, merged. We really appreciate when kernel developers writing new tests. (The previous patch was merged already as v3). Kind regards, Petr