disk

I am looking for some tool that will dump total disk I/O by a single process after it ends. So far my finding is :- iotop = It shows i/o per process in real time but does not give total after process end. iostat = It shows real time I/O but does not tell process For example , I have some process running in background with PID ####. I need the Total Bytes Written and Read by that process in total after the process ends.Can anybody tell how I can extract this information given a process PID. Feel free to play with this scribble (myio.sh): #!/bin/bash TEMPFILE=$(tempfile) # create temp file for

Does anyone know how to flush the disk write cache data from the cache manager for the current directory (or any given file or directory, for that matter), from a Windows command line? I found the SysInternals Sync worked well for me - although it flushes ALL cache, not just for the specific folder. Example of usage: IF EXIST Output RD /S /Q Output && Sync && MD Output By default it flushes all cached data for all drives - you can specify command-line options to restrict which drives but you cannot restrict it to just specific folders. Without it I would often get Access denied errors because

Here's what I have so far: import os.path as op for d in map(chr, range(98, 123)): #drives b-z if not op.isdir(d + ':/'): continue The problem is that it pops up a "No Disk" error box in Windows: maya.exe - No Disk: There is no disk in the drive. Please insert a disk into drive \Device\Harddisk1\DR1 [Cancel, Try Again, Continue] I can't catch the exception because it doesn't actually throw a Python error. Apparently, this only happens on removable drives where there is a letter assigned, but no drive inserted. Is there a way to get around this issue without specifically telling the script

I got a big performance issue using UIImagePickerController and saving the image on disk. I can't figure out what I am doing wrong. Here is my code: - (void)imagePickerController:(UIImagePickerController *)pick didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"]; NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(image)]; iPixAppDelegate *delegate = (iPixAppDelegate *)[[UIApplication sharedApplication] delegate]; [delegate addPicture:imageData]; } The addPicture method creates a new picture object that

Are there any good resources or books for spillable data structures, that is, say, a queue? When storing large objects it could fill up all of memory, but if you can keep, say, the most used items of that queue structure in memory and the rest on disk (sort of like paging). Similarly, this question applies to other structures such as linked lists, arrays, hashtables and so on. What you are looking for might be the topic of I/O efficient algorithms. A Google search didn't turn up any books for me, but this course page contains a list of articles which may or may not be relevant for you. You