RGW bucket stats - strange behavior & slow performance requiring RGW restarts

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi all, 

I've been observing some strange behavior with my object storage cluster running Nautilus 14.2.4. We currently have around 1800 buckets (A small percentage of those buckets are actively used), with a total of 13.86M objects. We have 20 RGWs right now, 10 for regular S3 access, and 10 for static sites.

When calling $(radosgw-admin bucket stats), it normally comes back within a few seconds, usually less than five. This returns stats for all buckets in the cluster, which we use for accounting. 

The strange behavior: Lately we've been observing a gradual increase in runtime for bucket stats, which in extreme cases can take almost 10 minutes to return. Things start out fine, and over the course of the week, the runtime increases. From a few seconds to almost 10 minutes. Restarting all of the S3 RGWs seems to fix this problem immediately. If we restart all the radosgw processes, the runtime for bucket stats drops to 3 seconds.

This is odd behavior, and I've found nothing so far that would indicate why this is happening. There is nothing suspicious in the RGWs, although a message about aborted mutli-part uploads is in there:

2019-12-02 13:12:52.882 7faa7018f700 0 abort_bucket_multiparts WARNING : aborted 8553000 incomplete multipart uploads

Otherwise, things look normal. Memory usage is low, CPU load is relatively low and flat, and the cluster itself is not under heavy load.

Has anyone run into this before?

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux