5 ms·
Some of the problems transcend POSIX. Someone I know maintains a non-relational db on IBM mainframes. When diving into a data issue, he was gob-smacked to fin
by emmelaich 2y ago
Some of the problems transcend POSIX. Someone I know maintains a non-relational db on IBM mainframes. When diving into a data issue, he was gob-smacked to find out that sync'd writes did not necessarily make it to the disk. They were cached in the drive memory and (I think) the disk controller memory. If all failed, data was lost.
- mangamadaiyan 2y agoThis is precisely why well-designed enterprise-grade storage systems disable the drive cache and rely upon some variant of striping to achieve good I/O performance.
- hackit2 2y agoJust wait till he has to deal with raid controllers.