Romex Software Forum

Hi,

i have some maybe easy questions.
First: If i use JDownloader for downloading videofiles from the net, i get parts of 100 MB RAR Files which are unpacked automatically at the end. For a 10 GB file it should be 10 GB RAR files and 10 GB for the unpacked videofile, therefore nearly 20 GB to write. But the "write bytes total" in the performance statistics show me some significant GB more, why ?

Second: After downloading and unpacking of nearly 20 GB (cache ist set to 12 GB, delay 200 sec., LRU, write only) i had still 6 GB of this big file in the cache (also after this 200 sec. there was no writing to the ssd). After moving the big file to another SSD it took 10 sec. and the trim order set the level 1 free bytes back to 12 GB. Why there was no writing to ssd after the delay time ? If the videofile is half on the ssd and half in the cache, what will happen if i play the videofile (data from the cache) while another 15 GB are written to the cache ?

Thanks

stanko3 wrote:But the "write bytes total" in the performance statistics show me some significant GB more, why ?

The "Write Bytes Total" traces the actual bytes to the volume/disk. While writing the huge files, NTFS file system might also generate lots of other data (these data might be written to some fixed address, but be written multiple times).
Another reason is that unpacker might write some temporary data to the volume/disk. This is just my guess since I don't know how the unpacker works.

stanko3 wrote:also after this 200 sec. there was no writing to the ssd

Did you monitor the correct item? The item shows if there are deferred data is "Deferred Blocks (Current)". If the value of this item is 0, then all the data have been flushed to the volume/disk.
If the above is correct, then did you trace another 200 sec if you use FC 0.6.0? Because the algorithm was changed in 0.6.0 version, the remainder of the deferred data will be written during the next 200 sec.

stanko3 wrote: If the videofile is half on the ssd and half in the cache, what will happen if i play the videofile (data from the cache) while another 15 GB are written to the cache ?

It is not a problem. You still can play the videofile as normal.

@ support

Thanks for the fast answer.

OK, i did not looked to the "Deferred Blocks (Current)" only to the "level 1 free bytes". I will test it again and tell you the results.