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Mon, 19 Feb 2024 10:09:23 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id n+aNFNMo02XVHwAAD6G6ig (envelope-from ); Mon, 19 Feb 2024 10:09:23 +0000 Message-ID: <91c50335-e7b6-4ae1-9dad-a0c990b52021@suse.cz> Date: Mon, 19 Feb 2024 11:09:23 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: regression/bisected commit 773688a6cb24b0b3c2ba40354d883348a2befa38 make my system completely unusable under high load Content-Language: en-US To: Marco Elver , Mikhail Gavrilov , Andrew Morton Cc: Andrey Konovalov , glider@google.com, dvyukov@google.com, eugenis@google.com, Oscar Salvador , Linux List Kernel Mailing , Linux Memory Management List References: From: Vlastimil Babka In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Authentication-Results: smtp-out2.suse.de; none X-Spamd-Result: default: False [1.40 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; XM_UA_NO_VERSION(0.01)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; BAYES_HAM(-0.01)[47.46%]; RCPT_COUNT_SEVEN(0.00)[10]; FREEMAIL_TO(0.00)[google.com,gmail.com,linux-foundation.org]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_CC(0.00)[gmail.com,google.com,suse.de,vger.kernel.org,kvack.org]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-Spam-Level: * X-Spam-Score: 1.40 X-Spam-Flag: NO On 2/19/24 10:52, Marco Elver wrote: > On Mon, 19 Feb 2024 at 10:48, Mikhail Gavrilov > wrote: >> >> On Sat, Feb 3, 2024 at 1:14 AM Mikhail Gavrilov >> wrote: >> > >> > You are right. >> > Thanks for digging into it! >> > >> >> This [2] revert is still not merged at least I checked on 4f5e5092fdbf. >> Is there any plan to merge it or find another approach? >> >> [2] https://lore.kernel.org/all/20240118110216.2539519-2-elver@google.com/ > > I think it's already in -mm and -next. It just takes time, which is a > good thing, after all we want to let -next testing confirm nothing is > wrong with it. > > Andrew, is this planned for the next merge window or as a "hot fix" > for the current rc? Given it has the right "Fixes" tags it will make > it to stable kernels eventually, but I also think that the previous > "slow" version is almost unusable on big systems, so it may be > worthwhile considering the current rc. Yeah it would be best to fix in 6.8 to prevent regressions. > Thanks, > -- Marco