Date: Fri, 11 Jun 1999 18:22:51 -0400 (EDT) From: Seth <seth@freebie.dp.ny.frb.org> To: freebsd-stable@freebsd.org Subject: xperfmon++ and softupdates? Message-ID: <Pine.BSF.4.10.9906111817150.283-100000@freebie.dp.ny.frb.org>
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I've noticed something a bit interesting, and wonder whether someone could confirm: I use xperfmon++ to monitor disk i/o (among other things). I've noticed that it seems to report disk activity without softupdates, but doesn't really show the effects of large copies WITH softupdates. For example, a copy of a 300 MB file will cause a spike in "Disk IO (Mbytes/s)" when softupdates is off, but with softupdates on, there's no change. It's not an urgent problem, but I am curious. Comments? [ Dunno whether it's relevant, but: ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> rev 0x00 int a irq 18 on pci2.10. 0 ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs ahc1: <Adaptec aic7880 Ultra SCSI adapter> rev 0x01 int a irq 18 on pci2.14.0 ahc1: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs sa0 at ahc1 bus 0 target 6 lun 0 sa0: <ARCHIVE Python 04106-XXX 715G> Removable Sequential Access SCSI-2 device sa0: 10.000MB/s transfers (10.000MHz, offset 15) da0 at ahc0 bus 0 target 0 lun 0 da0: <SEAGATE ST39102LW 0004> Fixed Direct Access SCSI-2 device da0: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled da0: 8683MB (17783240 512 byte sectors: 255H 63S/T 1106C) da1 at ahc0 bus 0 target 1 lun 0 da1: <SEAGATE ST39102LW 0004> Fixed Direct Access SCSI-2 device da1: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled da1: 8683MB (17783240 512 byte sectors: 255H 63S/T 1106C) ] Thanks, SB To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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