Date: Mon, 11 Apr 2011 08:38:22 +0000 From: Alexander Best <arundel@freebsd.org> To: Alexander Motin <mav@FreeBSD.org> Cc: freebsd-scsi@freebsd.org, freebsd-current@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: multiple issues with devstat_*(9) Message-ID: <20110411083821.GA80320@freebsd.org> In-Reply-To: <4DA2A33B.8010807@FreeBSD.org> References: <20110331223339.GA13682@freebsd.org> <201104010843.47367.jhb@freebsd.org> <20110404204316.GA11367@freebsd.org> <4D9D9917.3030102@FreeBSD.org> <20110410115644.GA55815@freebsd.org> <4DA210D3.5090807@FreeBSD.org> <20110411025646.GA46088@freebsd.org> <4DA2A33B.8010807@FreeBSD.org>
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On Mon Apr 11 11, Alexander Motin wrote: > Alexander Best wrote: > > On Sun Apr 10 11, Alexander Motin wrote: > >> Alexander Best wrote: > >>> On Thu Apr 7 11, Alexander Motin wrote: > >>>> Assuming that SCSI and IDE in -t option means transport type, and > >>>> assuming that we count everything except ATA and SATA as SCSI, I've made > >>>> following patch, that should fix issues from the CAM side: > >>>> http://people.freebsd.org/~mav/cam.devstat.patch > >>> with your patch i get the following output: > >>> > >>> otaku% iostat -t ide > >>> tty ada0 ada1 cpu > >>> tin tout KB/t tps MB/s KB/t tps MB/s us ni sy in id > >>> 6 144 14.21 6 0.09 20.46 40 0.81 2 0 3 0 95 > >>> otaku% iostat -t scsi > >>> tty cd0 cpu > >>> tin tout KB/t tps MB/s us ni sy in id > >>> 6 146 2.32 0 0.00 2 0 3 0 95 > >>> otaku% iostat -t pass > >>> tty pass0 pass1 pass2 cpu > >>> tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id > >>> 6 147 0.36 0 0.00 0.36 0 0.00 0.00 0 0.00 2 0 3 0 95 > >>> otaku% iostat -t da > >>> tty ada0 ada1 cpu > >>> tin tout KB/t tps MB/s KB/t tps MB/s us ni sy in id > >>> 6 147 14.21 6 0.08 20.46 37 0.75 1 0 3 0 95 > >>> otaku% iostat -t cd > >>> tty cd0 cpu > >>> tin tout KB/t tps MB/s us ni sy in id > >>> 7 147 2.32 0 0.00 1 0 3 0 95 > >>> otaku% iostat -t other > >>> tty cpu > >>> tin tout us ni sy in id > >>> 7 149 1 0 3 0 95 > >>> otaku% iostat -n 100 > >>> tty ada0 ada1 cd0 pass0 pass1 pass2 cpu > >>> tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id > >>> 6 135 14.21 5 0.07 20.44 32 0.64 2.32 0 0.00 0.36 0 0.00 0.36 0 0.00 0.00 0 0.00 1 0 3 0 96 > >>> > >>> the the remaining issues imho are: > >>> > >>> 1) ada* and cd* are SATA/ATA devices. so i think they should show up together > >>> either under ide *or* scsi. i don't have any *real* scsi devices. > >> I've just retested the patch and haven't reproduced your problem: > >> %iostat -d > >> da0 ada0 da1 cd0 > >> KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s > >> 0.01 0 0.00 3.27 1 0.00 2.65 1 0.00 0.00 0 0.00 > >> %iostat -d -t ide > >> da0 ada0 cd0 > >> KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s > >> 0.01 0 0.00 3.27 1 0.00 0.00 0 0.00 > >> %iostat -d -t scsi > >> da1 > >> KB/t tps MB/s > >> 2.65 1 0.00 > >> %iostat -d -t pass > >> pass0 pass1 pass2 pass3 > >> KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s > >> 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 > >> %iostat -d -t ide,pass > >> pass0 pass1 pass2 > >> KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s > >> 0.00 0 0.00 0.00 0 0.00 0.00 0 0.00 > >> %iostat -d -t scsi,pass > >> pass3 > >> KB/t tps MB/s > >> 0.00 0 0.00 > >> > >> da0 is an PATA ATAPI ZIP, da1 - USB floppy, ada0 - SATA HDD, cd0 - PATA > >> ATAPI CD-ROM. > >> > >> Just an idea, aren't you are using legacy ata(4) + atapicam for your > >> cd0? atapicam lies that it's buses are SPI (SCSI). > > > > my cd0 is a pata atapi dvdrom drive and i have the following in my kernel conf: > > > > device atacore > > device ahci > > device atajmicron > > device atapci > > #device atapicd > > device atapicam > > > > device umass > > device scbus > > device cd > > device pass > > device da > > device random > > device pty > > device md > > > > the dmesg entries for cd0 are: > > > > cam_periph_alloc: attempt to re-allocate valid device cd0 rejected > > cdasync: Unable to attach new device due to status 0x6 > > cd0 at ata2 bus 0 scbus8 target 0 lun 0 > > cd0: <HL-DT-ST DVDRAM GSA-H10N JL12> Removable CD-ROM SCSI-0 device > > cd0: 3.300MB/s transfers > > cd0: cd present [2149024 x 2048 byte records] > > Aha, that's it. It is atapicam's lie. atapicam is one of a things that > will go away during migration to CAM ATA. If you remove `device > atapicam`, but add `options ATA_CAM` instead, CAM will manage that bus > directly and report it as ATA. thanks for the hint. i also read the following in the ahci(4) man page: " Driver features include support for Serial ATA and ATAPI devices, ..." ...does that mean that my DVD drive can also attach to the ahci driver? cheers. alex > > -- > Alexander Motin -- a13x
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