4 ms·
Interesting. I'm surprised that even cheap SSDs and HDDS will reorder the writes. I've heard that most enterprise and higher end hard drives don't lie about fsy
by jeffreyrogers 9y ago
Interesting. I'm surprised that even cheap SSDs and HDDS will reorder the writes. I've heard that most enterprise and higher end hard drives don't lie about fsync (actually it's a bit more subtle, I've heard some do, but they have enough energy stored in capacitors to finish writing if power fails).
- zaarn 9y agoThey're cheap and the vendors like to pretty up the speed charts by ensuring any speed test will mostly hit the cache, even if it comes at the cost of loosing data during a power loss. Some enterprise SSD/HDD do have large enough capacitors to quickly commit the cache to a flash version or write it out, though usually you have a battery backed RAID controller for that.