Hi Nick, On Jul 29 2014, Nick Krause wrote:
I was doing a vanilla ls. So was the original reporter, unless he has some really strange aliases.
I'm afraid I'll be rather unpopular if I drop the caches on the system in question, creating a burst of poor performance, so my best bet is probably to see what I can do with ftrace on Monday, or perhaps partway through the weekend.
There is normally a fair amount of disk activity going on - much of it writes. So I can expect cached blocks to age out in a reasonable time.
Arlie, Whenever you get around to it is fine. Just send me a log. Cheers Nick
Arlie, just a friendly reminder can you try to send me the log this week. Regards Nick
I was just going to post an apology for going dark on you. I made one attempt to capture the data yesterday, and messed up - no useful data saved. And then half the world invaded my workspace with higher priority tasks ;-) I'm going to make another attempt at it this morning. On the good side, Vladis' observations of his mail directory have been a great help. Now I know that simply being a large ext4 directory is not the problem ;-) I.e. ext4 really isn't as brain damaged as I feared. (We had someone here who was initially sure that was it, and he has more experience in linux server space than I do, so I took his initial opinion at face value.) More soon, I hope. -- Arlie (Arlie Stephens arlie@worldash.org)