On Sunday, September 26, 2010, Nigel Cunningham wrote: > Hi. > > On 26/09/10 08:19, Rafael J. Wysocki wrote: > > On Saturday, September 25, 2010, Nigel Cunningham wrote: > >> Hi Rafael. > > > > Hi Nigel, > > > >> Please find attached a slightly updated version of the patchset I sent > >> a few months ago. The main change is that I've prepended and additional > >> patch which lets the user see the speed at which the image is being > >> read and written. This is accomplished by recording the MB/s in a single > >> byte in the image header, and using a couple of __nosavedata variables > >> to get the data back through the atomic restore. I realise the char limits > >> us to 255MB/s at the moment. In future patches, I intend to address this > >> by storing the data in a 'proper' image header (it's a real problem - > >> TuxOnIce reads and writes on the same set up at speeds around 250MB/s). > >> > >> Results on my Dell XPS M1530, which has an SSD hard drive are: > >> > >> With just patch 1 applied: > >> Attempt 1: Write 74MB/s; Read 52MB/s > >> Attempt 2: Write 68MB/s; Read 52MB/s > >> Attempt 3: Write 73MB/s; Read 53MB/s > >> > >> With the whole sequence: > >> Attempt 1: Write 181MB/s; Read 52MB/s > >> Attempt 2: Write 156MB/s; Read 53MB/s > >> Attempt 3: Write 160MB/s; Read 52MB/s > > > > Thanks for the patches, they look like a real improvement to me. > > > > I only had a couple of minor comments, sent separately in replies to individual > > patches. I'd like to push this series for 2.6.37, if the comments are > > addressed timely. > > Okay. I'll update the patches. You can pull from > > git://git.kernel.org/pub/scm/linux/kernel/git/nigelc/tuxonice-head.git#for-rafael > > if you want. I'd rather apply them individually for now, I may want to change subjects etc. here and there. > I'll apply your suggestions/comments to the versions there. I'll also > checkout what's going on with Martin's machine and hopefully apply > whatever fix is needed there too. Will keep you up to date with any changes. OK, thanks. At this point I think it'll be sufficient to combine patches 13 and 14 and send me the result. Best, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
