| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20091113104338.503e53d4@lxorguk.ukuu.org.uk> Date: Fri, 13 Nov 2009 10:43:38 +0000 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: Greg Steuck <greg@...t.cx> Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org> Subject: Re: RT wakeup woes in Linux 2.6.31.6 on Mac Mini > trace.13653:kblockd/-65 1dN.. 132us+: blk_rq_map_sg <-scsi_init_sgtable > trace.13653:kblockd/-65 1dN.. 200us+: blk_rq_map_sg <-scsi_init_sgtable > trace.13653:kblockd/-65 1dN.. 264us+: ata_tf_to_fis <-ahci_qc_prep > trace.13653:kblockd/-65 1dN.. 289us+: blk_rq_map_sg <-scsi_init_sgtable > trace.13653:kblockd/-65 1dN.. 349us+: ata_tf_to_fis <-ahci_qc_prep Something very weird with your tracing there ata_tf_to_fis simply moves 20 bytes of memory about. It could be you are hitting some kind of caching effect with the AHCI controller I guess. Certainly looks odd of itself. > ... > trace.6039: pdflush-5162 1d.s. 0us : 5162:120:R + [001] > 6040: 0:S rxtest > trace.6039: pdflush-5162 1dN.. 61us+: idle_cpu <-irq_exit > trace.6039: pdflush-5162 1dN.. 130us!: idle_cpu <-irq_exit > trace.6039: pdflush-5162 1dN.. 273us!: idle_cpu <-irq_exit What power management do you have enabled ? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists