Agree with all the above. Er, below. What Miguel said. :-) A lot of I/O problems stem from inefficient writing algorithms (e.g., byte-at-a-time).
Another test you can try is using DDMS File Manager or adb push to write a file to the SD card. If that is similarly slow, then the problem may be with hardware. On Mon, May 23, 2011 at 4:09 AM, Miguel Morales <[email protected]> wrote: > Yep that's ridiculously slow. What are you writing to the file? Are you > streaming it from the internet? Have you tried posting the code one > stackoverflow? Have you tried mounting the sdcard on your computer and > moving a file there to check what the time should be? > Try using a BufferedOutputStream to buffer some data to memory before it is > written to disk. > > On Sun, May 22, 2011 at 9:09 PM, Zsolt Vasvari <[email protected]> wrote: >> >> In my app, copying a 4MB file to the SD card takes maybe 5 seconds. I >> am using the Commons IO library. >> >> So you are doing something wrong if it takes more than a couple of >> seconds for a 1MB file. >> >> >> >> On May 23, 11:27 am, kypriakos <[email protected]> wrote: >> > First, good to hear from you Mark - I hope all is well! >> > >> > Well I expected the two (instead of three) letter response - I ended >> > up playing around >> > with the code (which is nothing other than using the FileOutputStream >> > to write out >> > the jpeg. I found out that if I replace the println statements (I was >> > checking what was >> > being written out and didn't expect it to cause so much overhead) with >> > Log.i the >> > image can be written in around 95 seconds ( 1 MB). Still slow but not >> > as bad as an >> > hour. Of course still 95 seconds is a bit too much. Anything else I >> > can try? May be >> > an SD card profile / performance test would be help determine if >> > something is going >> > on there? >> > >> > Thanks again >> > >> > On May 21, 1:58 pm, Mark Murphy <[email protected]> wrote: >> > >> > >> > >> > > On Sat, May 21, 2011 at 1:55 PM, kypriakos <[email protected]> >> > > wrote: >> > > > I am saving jpeg image on sdcard through an activity - about 1 MB >> > > > takes literally >> > > > close to an hour ... is that normal? >> > >> > > No. >> > >> > > -- >> > > Mark Murphy (a Commons >> > > Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy >> > >> > > Android App Developer Books:http://commonsware.com/books- Hide quoted >> > > text - >> > >> > - Show quoted text - >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en > > > -- > ~ Jeremiah:9:23-24 > Android 2D MMORPG: > http://solrpg.com/, http://www.youtube.com/user/revoltingx > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _The Busy Coder's Guide to Android Development_ Version 3.6 Available! -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
