Hello Ceph users, We are experiencing an issue with ceph 14.2.9 / RGW Beast frontend. We are seeing this across our two separate clusters.
Over a few weeks the qlen and qactive are going up and not returning to zero. At some point we start seeing performance degrade and we need to reboot the services. We are viewing the queue numbers in the perfcounters_dump. In objecter_requests we aren't seeing any request ( apart from very briefly ) We can reproduce the issue by use S3 browser and setting the concurrent downloads to 100. After completing download of ~1000 files, the queue length has incremented by 2-5 and never returns back to zero. Subsequent bulk downloads increase the qlen. We have the following tunables set rgw_bucket_index_max_aio 128 rgw_dns_name <fqdn##> rgw_frontends beast ssl_port=443 ssl_certificate=<CERT##> rgw_max_chunk_size 4194304 rgw_num_rados_handles 16 rgw_thread_pool_size 500 Anyone seen this or have any idea how to further debug? Any additional tuning suggested? 350TB S3 data Glen This e-mail is intended solely for the benefit of the addressee(s) and any other named recipient. It is confidential and may contain legally privileged or confidential information. If you are not the recipient, any use, distribution, disclosure or copying of this e-mail is prohibited. The confidentiality and legal privilege attached to this communication is not waived or lost by reason of the mistaken transmission or delivery to you. If you have received this e-mail in error, please notify us immediately. _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
