3 ms·
Sequential reads are faster than random even on SSD drivers, so it could help but I am not sure how much.
by jeltz 15y ago
Sequential reads are faster than random even on SSD drivers, so it could help but I am not sure how much.
- Iv 15y agoOh ? Why is that ? SSD still need to address every memory block, don't they ? Or do they have a faster DMA-like mode where you can send the instruction "give me the next 96KB starting at address X ?
- lucian1900 15y agoSSDs exhibit the same sort of cache locality RAM does. When a region is accessed, a larger chunk is fetched and cached just in case it's needed later.
- nuje 15y agoYes, and the OS readahead also helps. You can see the random vs sequential difference in any ssd review, eg http://thessdreview.com/our-reviews/ocz-vertex-3-240gb-max-iops-review-as-ssd-tests/ http://thessdreview.com/our-reviews/ocz-vertex-3-240gb-max-i... shows 18 MB/s in random reads vs 500 MB/s sequential reads.
- diggan 15y agoI'm not sure if a SSD drive have any moving parts and therefor will not benefit from E4rat.