On 06/30/2011 09:13 PM, Josef Bacik wrote:
On 06/30/2011 10:12 AM, Proskurin Kirill wrote:On 06/29/2011 08:14 PM, Josef Bacik wrote:Ok - I upgrade to 2.6.39-2 but it is seems to all things get worse. Now I see [btrfs-transacti]& btrfs-endio-wri] 80-100% all the time and io performance looks like lower then before. Our scribe daemon in state D most of the time with half of a normal load. Only kernel was changed. Any performance tune recommendation?Can you get sysrq+w while this problem is happening so we can see whats going on? Thanks,I attached sysrq+w. Hope it helps.Heh so it just looks like you are writing a bunch of stuff, that's not particularly helpful. What does this program do generically? How full is your fs? Do you have snapshots/subvolumes? If so how many? Thanks,
I found what my btrfs partition now is really slow. Something wrong happend. I try on 2.6.32 and 2.6.39 - same result. It is because partition is almost full?
I run a simple cycle to clean some old files: for i in `cat /tmp/delit`; do rm -f $i ; done And it is takes about 5-10 second per file to delete. I get sysrq+w while rm is work - it is attached. -- Best regards, Proskurin Kirill
Attachment:
dmesg.rm
Description: application/vnd.rn-realmedia
