Ah ok thanks. I am having the same problem. I have just been deleting session.db and then letting it recreate.

Edit: Which I've just realised doesn't save my tabs. Nevermind

OK. Did you fix it or move to a different browser or something?

Thanks for your responses. I deleted the .opera folder so I don't know how big the session.db grew. I have been checking it again since and it is growing but very slowly and it is currently only 2.5M.

After deleting .opera the problem went away but it has started to come back slowly although the freezes aren't as noticeable.

I know the freezes happened every 10 seconds because I timed it by watching a flash video and keeping an eye on the elapsed time of the video. With regards to how long the freezes are, it was just an estimate. I don't know exactly.

Did you file a bug report somewhere?

Thanks for your help. I should have mentioned that I used htop to check the r/w before. I just tried iotop but I can't see any correlation with the freezes.

By the way, it isn't the system that freezes, just Opera.

Maybe I should think about filing a bug report.

I changed the IO scheduler by:

# echo cfq > /sys/block/sda/queue/scheduler

I also tried noop and deadline but I still had the same problems.

Thanks for your response.

$cat /sys/block/sda/queue/scheduler

noop deadline cfq [bfq]

I will change the I/O scheduler and report back

Thanks for your response. Version 26.0.1656.60 on Arch Linux. It is just when using Opera. I don't have the problem on Chromium. My kernel is up-to-date.

no ideas?

Opera freezes every 10 seconds for less than a millisecond.

It isn't really noticeable unless I'm watching a youtube video, scrolling, or clicking on a menu in the UI.

I have disabled all extensions and plugins, enabled and disabled h/w acceleration, and reset flags to no avail.

Any ideas why it is doing this? Thanks in advance.