Hi, cephers recently when using s3cmd to upload a large file, last POST request which meaned I have finished mutltipart upload.But in fact file upload success. some key points: 1.s3cmd send the POST request.but the server response spend 30s;why some times this POST request need 30s to finish, most of this POST request finished within 100ms ----- did it mean we face a performance bottleneck? we used ssd to store index pool. > ceph version is 10.2.11 > 42 nodes, each has ten 8T sata and two SSD, > .rgw.buckets.data 61 899T 96.58 32644G 423943616 > .rgw.buckets.index 63 0 0 7025G 5472 2.s3cmd retry send POST request which do not wait for the first POST request 3.why the server return 500 when send multi same POST request, how about return 102? the request list is below: ## nginx1 10.200.59.145 - [16/Sep/2019:14:00:05 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploads HTTP/1.1" 200 303 789 "-" "-" "-" 0.191 0.191 10.200.59.145 - [16/Sep/2019:14:00:05 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "PUT /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?partNumber=1&uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 200 0 15729218 "-" "-" "-" 0.511 0.383 ... 10.200.59.145 - [16/Sep/2019:14:01:07 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "PUT /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?partNumber=99&uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 200 0 15729218 "-" "-" "-" 0.511 0.383 ## nginx2 10.200.59.145 - [16/Sep/2019:14:01:09 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "PUT /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?partNumber=100&uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 200 0 15729220 "-" "-" "-" 2.430 2.298 ... 10.200.59.145 - [16/Sep/2019:14:03:43 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "PUT /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?partNumber=349&uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 200 0 1857220 "-" "-" "-" 0.160 0.155 10.200.59.145 - [16/Sep/2019:14:04:13 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 200 360 30520 "-" "-" "-" 30.225 30.223 ## nginx3 10.200.59.145 - [16/Sep/2019:14:03:56 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 500 291 30520 "-" "-" "-" 0.012 0.011 10.200.59.145 - [16/Sep/2019:14:04:02 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 500 291 30520 "-" "-" "-" 0.012 0.012 10.200.59.145 - [16/Sep/2019:14:04:11 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 500 291 30520 "-" "-" "-" 0.012 0.012 10.200.59.145 - [16/Sep/2019:14:04:23 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 500 291 30520 "-" "-" "-" 0.013 0.013 10.200.59.145 - [16/Sep/2019:14:04:38 +0800] "hba3-backup-data0004-f.s3.nie.netease.com" "POST /yaz4nalmsgsam8kfk5doca/backup/_realm_data.tar.gz.0?uploadId=2~v6s8KbNeMA7RaXS_ntcUPtfP1BmXVr1 HTTP/1.1" 500 291 30520 "-" "-" "-" 0.013 0.013
