sysinternals process monitor fast io disallowed

On an otherwise empty, fresh, partition aligned 7200.12, sequential writes at 8KB went at 82MB/s, while at 64KB they went at 122MB/s. the filtration queue didn't have the names yet), Sysinternals Process Monitor showed that NeatImage appeared to be executing sequential reads of every single file in chunks on the order of 1/3900th of the file's size (12KB to 19KB).ĭuring filtration, again there are sequential reads in the tiny little chunks, followed by sequential writes in the tiny little chunks.Ī) Can I please avoid the first pass of reading everything? It's increasing the batch cycle time quite significantly, and I can think of no real benefit to my 'start batch, wait for the batch to finish' workflow.ī) Could you please update the code to execute reads and writes in signficantly larger chunks (64KB, 256KB, 4MB)? My Microsoft sqlio tests show that even at the end of a single standard hard drive (WD 1TB FALS) without partition alignment used for the OS (while other software was wrunning), 8KB sequential writes went at 53MB/s, while 32KB and up writes went at 72MB/s.

While running a batch of 11GB worth of 16-bit TIFs (about 230 of them, some over 80MB in size Canon 50D RAW images converted by Bridge CS4), I noticed the following:Īfter adding the directory to the batch, and before it actually started doing the processing (i.e.

Sysinternals process monitor fast io disallowed