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Wed, 12 Jun 2024 18:33:30 +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 +xn3LfrpaWZRDwAAD6G6ig (envelope-from ); Wed, 12 Jun 2024 18:33:30 +0000 Date: Wed, 12 Jun 2024 20:33:29 +0200 From: David Sterba To: Mateusz Guzik Cc: brauner@kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, josef@toxicpanda.com, hch@infradead.org Subject: Re: [PATCH v4 2/2] btrfs: use iget5_locked_rcu Message-ID: <20240612183329.GI18508@twin.jikos.cz> Reply-To: dsterba@suse.cz References: <20240611173824.535995-1-mjguzik@gmail.com> <20240611173824.535995-3-mjguzik@gmail.com> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240611173824.535995-3-mjguzik@gmail.com> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) X-Spamd-Result: default: False [-4.21 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; HAS_REPLYTO(0.30)[dsterba@suse.cz]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; FREEMAIL_TO(0.00)[gmail.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_TLS_ALL(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCPT_COUNT_SEVEN(0.00)[9]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:106:10:150:64:167:received]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; REPLYTO_ADDR_EQ_FROM(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.cz:+] X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Queue-Id: DB0075C59B X-Spam-Flag: NO X-Spam-Score: -4.21 X-Spam-Level: On Tue, Jun 11, 2024 at 07:38:23PM +0200, Mateusz Guzik wrote: > With 20 threads each walking a dedicated 1000 dirs * 1000 files > directory tree to stat(2) on a 32 core + 24GB ram vm: > > before: 3.54s user 892.30s system 1966% cpu 45.549 total > after: 3.28s user 738.66s system 1955% cpu 37.932 total (-16.7%) > > Benchmark can be found here: https://people.freebsd.org/~mjg/fstree.tgz > > Reviewed-by: Josef Bacik > Signed-off-by: Mateusz Guzik Acked-by: David Sterba