And JJRambo was right for Superfetch etc


Recommended Posts

Superfetch has nothing to do with the life of the SSD drives.

Superfetch preloads commonly used applications in RAM on boot so they will be readily available when you click to start them. All that preloading = more read/writes to the SSD thus decreasing its service life.

@Dashel

Readyboost increases performance by using a flash drive as poor man's RAM. Since any SSD will have far greater read/write speed than an ordinary flash drive, utilizing readyboost in conjunction with an SSD would reduce performance.

Edited by VRam
Link to comment
Share on other sites

That one makes sense but Superfetch is the main tipping point here it seems. Why are all these writes occuring to the SSD with the other options? Shouldn't it just be reading from the disk into memory or does this stem back to the role of the page file in all of this?

Readyboost isn't only poor man's RAM, it can also augment your HDD due to its fast random reads. Last time I checked though, write speeds of SSD are nothing to write home about.

Link to comment
Share on other sites

As i said few years ago when Vista was released Superfetch, Readyboost is useless and it will dissapear as hardware actually HDDs get faster. Superfetch, Readyboost was software solution Microsoft has to overcome poor Windows File System Performance or better say File/Folder structure and natures of standard HDDs itself. I got attacked by a lot of people including Mr. Brandon himself. Oh well, i knew time will show that i was right.

What?

SuperFetch has nothing to do with any file system. It's designed to help alleviate a bottleneck in current I/O subsystems, mainly the poor random seek times of spinning disks. In the past you have claimed that having a RAID 0 system obviated the benefit of SuperFetch. This of course is entirely false. In fact, RAID 0 arrays have higher latencies than non-RAIDed disks.

Windows 7 will disable SuperFetch if an extremely low-latency / high performance SSD is detected. I believe there are very few SSDs which will meet that bar at this point.

Link to comment
Share on other sites

@Ricardo Gil - Going from your comments, did you also notice a performance drop in searching the storage medium w. 7/Vista compared to XP?

If you mean with Windows Search they'll be the same since it's searching a database, not files.

Link to comment
Share on other sites

If you mean with Windows Search they'll be the same since it's searching a database, not files.

I meant searching files - no Indexing.

Link to comment
Share on other sites

Actually I don't see why Superfetch is disabled on SSDs since superfetch only reads and reads don't have an impact on flash lifetime. It could be because of reads for prefetching interfering with application writes or the (false) assumption that SSDs are as fast as memory. Either way I hope they let you turn it on.

Superfetch being because of slow "file system" performance is the biggest load of crap ever. Memory hierarchies are an old and very established concept in computer science. You might as well decide that the instruction prefetcher is useless or that reading in a full cacheline is pointless.

Clearly jjrambo doesn't know what he is talking about.

Link to comment
Share on other sites

I meant searching files - no Indexing.

No, haven't tried that. It wouldn't be a reliable benchmark anyway. Different files in each machine, some files could be cached or not, etc.. It could go either way.

Link to comment
Share on other sites

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.