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Date: Fri, 12 Jun 2009 23:16:27 -0700 From: Arjan van de Ven <arjan@...radead.org> To: "Trenton D. Adams" <trenton.d.adams@...il.com> Cc: Theodore Tso <tytso@....edu>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: IO latency - a special case On Fri, 12 Jun 2009 23:51:19 -0600 "Trenton D. Adams" <trenton.d.adams@...il.com> wrote: > > Right now, just during normal system usage, it's showing... > Cause Maximum > Percentage poll_schedule_timeout do_sys_poll sys_poll sysente 5.0 > msec 58.0 % futex_wait do_futex compat_sys_futex > sysenter_disp 5.0 msec 40.3 % blk_execute_rq scsi_execute > scsi_execute_req scsi_ 3.9 msec 0.2 % blk_execute_rq > scsi_execute scsi_execute_req sd_re 3.5 msec 0.2 % > poll_schedule_timeout do_select core_sys_select sy 3.4 msec > 0.3 % blk_execute_rq scsi_execute scsi_execute_req sr_te 2.6 > msec 0.5 % blk_execute_rq scsi_execute scsi_execute_req > sr_te 2.2 msec 0.5 % blk_execute_rq scsi_execute > sr_do_ioctl sr_packet 0.9 msec 0.1 % blk_execute_rq > scsi_execute scsi_execute_req ioctl 0.6 msec 0.0 % release > __blkdev_put blkdev_put blkdev_close __fput this shows it's not correctly installed.... (and it's likely an older version) -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/
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