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Tue, 17 Sep 2024 11:17:47 +0000 Date: Tue, 17 Sep 2024 13:16:36 +0200 From: Cyril Hrubis To: Li Wang Message-ID: References: <20240805063616.12572-1-liwang@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240805063616.12572-1-liwang@redhat.com> X-Rspamd-Queue-Id: B80792001F X-Spamd-Result: default: False [-4.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; 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)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MISSING_XM_UA(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns]; DKIM_TRACE(0.00)[suse.cz:+] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Virus-Scanned: clamav-milter 1.0.3 at in-7.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH] getrusage03: Forcing context switches to update resource usage X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Scott Weaver , ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi! > Our CI sporadically complains that this test grandchild's MAXRSS did not reach > the expected 300MB size. > > 12 getrusage03.c:86: TFAIL: child.children = 258048, expected 307200 > > As the ru_maxrss value is generally updated at certain intervals or under > specific conditions, such as page faults or context switches. There may be > delay between the completion of memset() and the update of ru_maxrss. > > To address this issue, we create a function to force context switches by > calling sched_yield() multiple times. This approach helps to ensure that > the system has the opportunity to update the ru_maxrss value more promptly. > > Reproted-by: Scott Weaver > Signed-off-by: Li Wang This looks forgotten but should probably go in before the release... Anyways: Reviewed-by: Cyril Hrubis -- Cyril Hrubis chrubis@suse.cz -- Mailing list info: https://lists.linux.it/listinfo/ltp