Why are ssds slower righting lots of smaller files compared to 1 large file

[Smackaroy]

I have a couple 850 evos 840 pro and a mx500 all of them have relatively consistent speeds when writing one large file but if it is writing tons of smaller files in the 5 or less mb range performance goes down to like 30mbs what gives. 

All of them do it so it can't be a faulty drive

 

 

[Electronics Wizardy]

What program are you using to write the smll files?

 

Normlly there is lots of overheaad with lots of small files.

[LIGISTX]

2 minutes ago, Smackaroy said:

I have a couple 850 evos 840 pro and a mx500 all of them have relatively consistent speeds when writing one large file but if it is writing tons of smaller files in the 5 or less mb range performance goes down to like 30mbs what gives. 

All of them do it so it can't be a faulty drive

 

 

Think of it like this, if you had to put 100 lbs of things away in your kitchen. Would it be easier (assuming your strong enough) to put 1 thing in 1 place, or 100 little 1 lbs things away? Its basically that. 

[Smackaroy]

5 minutes ago, Electronics Wizardy said:

What program are you using to write the smll files?

 

Normlly there is lots of overheaad with lots of small files.

Just the smaller the files in a game for example copying them to another place on the drive

[Electronics Wizardy]

13 minutes ago, Smackaroy said:

Just the smaller the files in a game for example copying them to another place on the drive

then use a multithreaded copying program like robocopy with the /mt switch.

[Smackaroy]

Just now, Electronics Wizardy said:

then use a multithreaded copying program like robocopy with the /mt switch.

I'm the image I have an 850 evolution plugged in via USB thats why the speeds are slow but the rule still applies. The consistent green line is when it was writing lager files about 80mbs again its slow because of the usb but you can see when it writes files which are about 500kb it drops to 1-2mbs

[Electronics Wizardy]

1 minute ago, Smackaroy said:

I'm the image I have an 850 evolution plugged in via USB thats why the speeds are slow but the rule still applies. The consistent green line is when it was writing lager files about 80mbs again its slow because of the usb but you can see when it writes files which are about 500kb it drops to 1-2mbs

that seems expected. Small files will do that. What does usage in task manager look like?

 

Id try robocopy with multithreading.

[Smackaroy]

Just now, Electronics Wizardy said:

that seems expected. Small files will do that. What does usage in task manager look like?

 

Id try robocopy with multithreading.

OK thanks for the help I'll have a look at robocopy tomorrow its quite late where I am.