"Readyboost for Linux," take two?
Posted: 29. Aug 2013, 04:27
Or the next best thing, anyway: putting the root filesystem's journal on a flash device. After stumbling across a blog entry on external journals, I decided to try this on Salix. ATM I have Salix 14.0.1 KDE running on my netbook, with JFS and an external journal.
Is it faster?
... Not really.
At first I tried putting the journal on a MicroSD card, and found that KDE took maybe 50% longer to start than with an internal journal. So I tried moving it to a somewhat faster USB stick... But it was still relatively slow. Suffice to say I am not impressed.
I also tried using ext4 with an external journal on my headless laptop... That was a failure, the kernel panicked on boot. I suspect that unlike JFS it needs a /boot partition. Actually I probably should have used one with JFS, come to think of it.
I'll see if I can I can improve the performance situation. My guess is that it's due to the physical nature of USB media, and not really fixable, but it can't hurt to experiment a bit.
Is it faster?
... Not really.
At first I tried putting the journal on a MicroSD card, and found that KDE took maybe 50% longer to start than with an internal journal. So I tried moving it to a somewhat faster USB stick... But it was still relatively slow. Suffice to say I am not impressed.
I also tried using ext4 with an external journal on my headless laptop... That was a failure, the kernel panicked on boot. I suspect that unlike JFS it needs a /boot partition. Actually I probably should have used one with JFS, come to think of it.
I'll see if I can I can improve the performance situation. My guess is that it's due to the physical nature of USB media, and not really fixable, but it can't hurt to experiment a bit.