I note the n900 running Meego boots with btrfs SSD mode enabled. A May 2009 article indicates there were performance problems w/ SSD Btrfs: http://www.phoronix.com/scan.php?page=article&item=btrfs_ssd_mode&num=1
Have these been resolved in later kernels and revisions of Btrfs, such as found in Meego? The article "Testing Out The SSD Mode In Btrfs" concludes: "If you were hoping to simply mount a Btrfs file-system on a solid-state drive and expect it to be faster, guess again. Simply mounting the file-system with the SSD option in all but one test had either led to the same level of performance or actually much worse performance. The OCZ Vertex SATA 2.0 SSD did not play nicely with disabling the write cache, but fortunately we have other drives and test systems around for benchmarking. We will continue studying the SSD performance on Btrfs and other Linux file-systems and will be back with more results as they are completed. We will also be testing out Btrfs with the latest Linux 2.6.30 kernel, etc. Btrfs right now does not have a quantitative performance advantage over the EXT4 file-system as our previous tests have shown, and this SSD mount option is no magic bullet, at least not yet." Do such results apply to the N900 handset? Also, what are the effects of running Btrfs filessytem in SSD-mode on the external memory card on the handset, versus a more traditional SSD configuration that emulates a SATA interface? Niels http://nielsmayer.com _______________________________________________ MeeGo-handset mailing list [email protected] http://lists.meego.com/listinfo/meego-handset
