Hi, I have been trying to gauge file systems performance on flash device for one of my projects.
I already have numbers for ext2 and ext4 , both of them doing pretty good for sequential IOs, but horrible when it comes to random ones. Now I am trying to look into NILFS to figure out what performance they can give for random IOs. I downloaded open source software from nilfs.org. Once I start running my fio tests the kernel crashes. And presumably this happens when cleaner demon tries to clean the snapshots, to make space in the device. Has anybody seen similar problems ? I am able to get some numbers for sequential IOs, keeping device size as small as 12g. (though device spans 240g) .But w/ similar device size of 12g for randowm write, kernel crashes almost when the test is ~20% complete. I have also tried to update cleanerd.conf so that snapshots cleaning is held longer, but am not able to avert it for the duration of random write is preety long. I would highly appreciate inputs. Thanks Amrita _______________________________________________ users mailing list [email protected] https://www.nilfs.org/mailman/listinfo/users
