From: Guy P. <ga...@ri...> - 2006-03-03 06:15:21
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Now THAT would be fast. --Guy _____ From: nub...@li... [mailto:nub...@li...] On Behalf Of Tobias Netzel Sent: Friday, March 03, 2006 1:12 AM To: nub...@li... Subject: Re: [Nubus-pmac-users] Compact Flash Hi icedtrip, you can try to connect the CF card to the internal IDE bus instead of the harddisk using an IDE to CF adaptor. Petrvz has already tried this but not every CF card seems to work. Tobias Am 03.03.2006 um 00:02 schrieb icedtrip: Didn't even think about the read/write cycles. Making a swap partition on one would use it up very quickly come to think of it. Also, never would have thought that the bus for the PCMCIA card would cause a bottleneck. I figured it would certainly be faster than a hard drive, even with larger files. Oh well, here's to hoping and finding that next best thing to speed things along. icedtrip On 3/2/06, Guy Paddock <ga...@ri...> wrote:Vito, I've already tried using it for swap and found that it actually was slower with it. I have a 1 GB Ultra Fast Memory CF card (the kind you use so that there is no delay when you take pictures with a camera; I got it for a good deal on eBay). The CF card can read and write exceptionally fast for small amounts of data (4KB, 8KB, 16KB, etc), but the PCMCIA bus in the PowerBooks isn't very wide. Sadly, Linux seems to use larger pages, so there's a bottleneck writing to the CF card. I verified this with Norton System Info in the Mac OS. I compared the performance of my internal hard drive to an external SCSI drive and the CF Card. The CF Card was insanely fast for smaller things, but as the size of the test data increased, it became much, much, slower, and it was fairly obvious that it wasn't the CF card that was slow, it was the bus. There's also one other reason that this is a bad idea: CF has a limited number of write cycles. It's high - something like 100,000 cycles or so - but as a paging volume, it can reach this relatively fast, especially on a low-memory system. --Guy From: nub...@li... [mailto:nub...@li...] On Behalf Of Vito Sent: Thursday, March 02, 2006 3:33 PM To: nub...@li... Subject: Re: [Nubus-pmac-users] Compact Flash Definately possible for purposes of swap, not sure about root. Vito ----- Original Message ---- From: icedtrip <li...@ic...> To: nub...@li... Sent: Thursday, March 2, 2006 9:01:23 AM Subject: [Nubus-pmac-users] Compact Flash I remember doing this with OS 9 a few times, but is it possible to use a Compact Flash Card in a PCMCIA adaptor for swap, or possible even as your "/" partition? I would imagine doing this would speed things up a good bit. I have a few spare flash cards laying around and figured it wouldn't hurt to put them to use. Would they be stable since they are being accessed by PCMCIA? Any ideas? icedtrip |
From: Guy P. <ga...@ri...> - 2006-03-03 16:21:43
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Would the PB IDE controller recognize a slave device? I know that the hard drive and the CD-ROM drive are on separate channels, each the master of its channel, so isn't it possible to connect a CF card as a slave? --Guy _____ From: nub...@li... [mailto:nub...@li...] On Behalf Of icedtrip Sent: Friday, March 03, 2006 11:08 AM To: nub...@li... Subject: Re: [Nubus-pmac-users] Compact Flash Now that's an idea, and just for experimentation sake, I may try it out someday. Unfortunately, I wouldn't be able to give up the 12GB of space. Ideally the plan is to get the CD-RW working, and buy a new battery and use this thing as a true portable. My dead battery currently keeps me from this. Also, Tobias, I have been running the most recent kernel from your webspace without problems thus far. I will do a little pounding on the machine over the weekend and see how things go. icedtrip On 3/3/06, Tobias Netzel <tob...@t-...> wrote: Hi icedtrip, you can try to connect the CF card to the internal IDE bus instead of the harddisk using an IDE to CF adaptor. Petrvz has already tried this but not every CF card seems to work. Tobias Am 03.03.2006 um 00:02 schrieb icedtrip: > Didn't even think about the read/write cycles. Making a swap > partition on one would use it up very quickly come to think of it. > Also, never would have thought that the bus for the PCMCIA card would > cause a bottleneck. I figured it would certainly be faster than a > hard drive, even with larger files. Oh well, here's to hoping and > finding that next best thing to speed things along. > > icedtrip > > On 3/2/06, Guy Paddock <ga...@ri...> wrote:Vito, >> >> >> >> I've already tried using it for swap and found that it actually was >> slower with it. I have a 1 GB Ultra Fast Memory CF card (the kind you >> use so that there is no delay when you take pictures with a camera; I >> got it for a good deal on eBay). The CF card can read and write >> exceptionally fast for small amounts of data (4KB, 8KB, 16KB, etc), >> but the PCMCIA bus in the PowerBooks isn't very wide. Sadly, Linux >> seems to use larger pages, so there's a bottleneck writing to the CF >> card. >> >> >> >> I verified this with Norton System Info in the Mac OS. I compared the >> performance of my internal hard drive to an external SCSI drive and >> the CF Card. The CF Card was insanely fast for smaller things, but as >> the size of the test data increased, it became much, much, slower, >> and it was fairly obvious that it wasn't the CF card that was slow, >> it was the bus. >> >> >> >> There's also one other reason that this is a bad idea: CF has a >> limited number of write cycles. It's high - something like 100,000 >> cycles or so - but as a paging volume, it can reach this relatively >> fast, especially on a low-memory system. >> >> >> >> --Guy >> >> >> >> >> From: nub...@li... >> [mailto: <mailto:nub...@li...> nub...@li...] On Behalf Of >> Vito >> Sent: Thursday, March 02, 2006 3:33 PM >> >> To: nub...@li... >> Subject: Re: [Nubus-pmac-users] Compact Flash >> >> >> >> >> Definately possible for purposes of swap, not sure about root. >> >> Vito >> >> ----- Original Message ---- >> From: icedtrip <li...@ic...> >> To: nub...@li... >> Sent: Thursday, March 2, 2006 9:01:23 AM >> Subject: [Nubus-pmac-users] Compact Flash >> >> I remember doing this with OS 9 a few times, but is it possible to >> use a Compact Flash Card in a PCMCIA adaptor for swap, or possible >> even as your "/" partition? I would imagine doing this would speed >> things up a good bit. I have a few spare flash cards laying around >> and figured it wouldn't hurt to put them to use. Would they be >> stable since they are being accessed by PCMCIA? Any ideas? >> >> icedtrip |
From: Tobias N. <tob...@t-...> - 2006-03-03 18:05:33
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I don't know if it does. But in the media bay it ignores master/slave settings; both slave or=20 master configured drives show up as master. So it might be that this is also the case with the internal channel. Tobias Am 03.03.2006 um 17:21 schrieb Guy Paddock: > > Would the PB IDE controller recognize a slave device? I know that the=20= > hard drive and the CD-ROM drive are on separate channels, each the=20 > master of its channel, so isn=92t it possible to connect a CF card as = a=20 > slave? > =A0 > --Guy > =A0 > > From: nub...@li...=20 > [mailto:nub...@li...] On Behalf Of=20 > icedtrip > Sent: Friday, March 03, 2006 11:08 AM > To: nub...@li... > Subject: Re: [Nubus-pmac-users] Compact Flash > =A0 > > Now that's an idea, and just for experimentation sake, I may try it=20 > out someday.=A0 Unfortunately, I wouldn't be able to give up the 12GB = of=20 > space.=A0 Ideally the plan is to get the CD-RW working, and buy a new=20= > battery and use this thing as a true portable.=A0 My dead battery=20 > currently keeps me from this. > > Also, Tobias, I have been running the most recent kernel from your=20 > webspace without problems thus far.=A0 I will do a little pounding on=20= > the machine over the weekend and see how things go. > > icedtrip > On 3/3/06, Tobias Netzel <tob...@t-...> wrote: > > Hi icedtrip, > > you can try to connect the CF card to the internal IDE bus instead of > the harddisk using an IDE to CF adaptor. > Petrvz has already tried this but not every CF card seems to work. > > Tobias > > > Am 03.03.2006 um 00:02 schrieb icedtrip: > > > Didn't even think about the read/write cycles. Making a swap > > partition on one would use it up very quickly come to think of it. > > Also, never would have thought that the bus for the PCMCIA card=20 > would > > cause a bottleneck. I figured it would certainly be faster than a > > hard drive, even with larger files. Oh well, here's to hoping and > > finding that next best thing to speed things along. > > > > icedtrip > > > > On 3/2/06, Guy Paddock <ga...@ri...> wrote:Vito, > >> > >> > >> > >> I've already tried using it for swap and found that it actually = was > >> slower with it. I have a 1 GB Ultra Fast Memory CF card (the kind=20= > you > >> use so that there is no delay when you take pictures with a=20 > camera; I > >> got it for a good deal on eBay). The CF card can read and write > >> exceptionally fast for small amounts of data (4KB, 8KB, 16KB, = etc), > >> but the PCMCIA bus in the PowerBooks isn't very wide. Sadly, Linux > >> seems to use larger pages, so there's a bottleneck writing to the=20= > CF > >> card. > >> > >> > >> > >> I verified this with Norton System Info in the Mac OS. I compared=20= > the > >> performance of my internal hard drive to an external SCSI drive = and > >> the CF Card. The CF Card was insanely fast for smaller things, but=20= > as > >> the size of the test data increased, it became much, much, slower, > >> and it was fairly obvious that it wasn't the CF card that was = slow, > >> it was the bus. > >> > >> > >> > >> There's also one other reason that this is a bad idea: CF has a > >> limited number of write cycles. It's high =96 something like = 100,000 > >> cycles or so =96 but as a paging volume, it can reach this = relatively > >> fast, especially on a low-memory system. > >> > >> > >> > >> --Guy > >> > >> > >> > >> > >> From: nub...@li... > >> [mailto: nub...@li...] On Behalf = Of > >> Vito > >> Sent: Thursday, March 02, 2006 3:33 PM > >> > >> To: nub...@li... > >> Subject: Re: [Nubus-pmac-users] Compact Flash > >> > >> > >> > >> > >> Definately possible for purposes of swap, not sure about root. > >> > >>=A0=A0Vito > >> > >>=A0=A0----- Original Message ---- > >>=A0=A0From: icedtrip <li...@ic...> > >>=A0=A0To: nub...@li... > >>=A0=A0Sent: Thursday, March 2, 2006 9:01:23 AM > >>=A0=A0Subject: [Nubus-pmac-users] Compact Flash > >> > >>=A0=A0I remember doing this with OS 9 a few times, but is it = possible to > >> use a Compact Flash Card in a PCMCIA adaptor for swap, or possible > >> even as your "/" partition? I would imagine doing this would speed > >> things up a good bit. I have a few spare flash cards laying around > >> and figured it wouldn't hurt to put them to use. Would they be > >> stable since they are being accessed by PCMCIA? Any ideas? > >> > >>=A0=A0icedtrip > =A0 |