I too have noticed pauses on my 1.5 and they are worse than they used to be. The mouse cursor is still active during the pause.
Tony > I too have observed increasingly often "pauses" > on my XO but have had no idea how or where to > start to debug the problem. > > One thought I had is that the swap file on the SD > card is the source of the problem (somehow) but > I still have the pernicious/persistent hanging even > without using the swapfile. > > I'll try with a brand new 16GB SD card to see if > that helps. > > --Chris > > On 10/13/12, Mikus Grinbergs <[email protected]> wrote: > > Lately there has been discussion about using an SD card to expand the > > "storage" capability of the XO. [For instance, discussion of when an XO > > functions as a server, having it keep its database on an SD card.] > > > > What I want to mention is that I experience occasional "pauses" on my XO > > systems (each has a "permanent" SD card, on which I keep Activities, > > Linux executables, etc.). I do not know what causes these "pauses", but > > my best guess is the following (particularly since "pauses" often occur > > during a CLI command that is "massively" accessing the SD card). > > > > My guess: SD cards have an "embedded chip" which is responsible for > > "wear levelling" the electronic components used to keep the data. It > > does this by internally 'rearranging' "which data block is physically > > kept where". I think this 'rearranging' action by the "embedded chip" > > gets launched (when some 'internal' SD card thresholds are met) during > > an I/O access by the (XO) host -- and this "rearranging" results in that > > host's I/O access being DELAYED until the "embedded chip" is done. > > > > > > I have not compared the "performance" (from the user's point of view) of > > running an Activity "from the SD card" vs. running it "from the XO". > > But I do have the impression that the duration of the occasional > > "pauses" which I as a user notice while running "with the SD card" have > > gotten LONGER as my XOs have migrated to using ever-larger SD cards. > > > > mikus > > > > _______________________________________________ > > Devel mailing list > > [email protected] > > http://lists.laptop.org/listinfo/devel > > > _______________________________________________ > Devel mailing list > [email protected] > http://lists.laptop.org/listinfo/devel > > _____________________________________________________ > This mail has been virus scanned by Australia On Line > see http://www.australiaonline.net.au/mailscanning _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
