Here are a couple of console snapshots. I seem to remember that 1:40 AM was around the time that the uploading started again. I highlighted messages that seem important. Messages have been anonymized
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9/7/15 1:40:13.557 AM cloudphotosd[308]: MSSubscriber - 93064470 Found 50 new asset collections.
9/7/15 1:40:13.559 AM cloudphotosd[308]: Deleted asset collections: (
"<MSAssetCollection: 0x7ff8e06fbc80> Server uploaded date: 2015-08-16 14:01:42 +0000\n Master asset: <MSAsset: 0x7ff8e06fbb30> GUID: F39C7FB5-942E-4E96-9D1D-D29FC15CA143 \n",
"<MSAssetCollection: 0x7ff8e06edd80> Server uploaded date: 2015-08-16 14:17:59 +0000\n Master asset: <MSAsset: 0x7ff8e06fbcd0> GUID: ABE1C0EF-322E-4577-B4CB-2DF04D633386 \n",
"<MSAssetCollection: 0x7ff8e06edf00> Server uploaded date: 2015-08-16 14:08:25 +0000\n Master asset: <MSAsset: 0x7ff8e06eddd0> GUID: EA1ED4AC-433C-4C7A-8898-C970CB1EC9E9 \n",
"<MSAssetCollection: 0x7ff8e06ee0e0> Server uploaded date: 2015-08-16 14:21:42 +0000\n Master asset: <MSAsset: 0x7ff8e06edf50> GUID: 9D0043BC-5B75-4306-AE20-2961D10FBC7F \n",
"<MSAssetCollection: 0x7ff8e06ee2c0> Server uploaded date: 2015-08-16 14:18:32 +0000\n Master asset: <MSAsset: 0x7ff8e06ee130> GUID: CFA3BD88-6354-4654-B747-D737B3620BF4 \n",
"<MSAssetCollection: 0x7ff8e06ee4a0> Server uploaded date: 2015-08-16 14:02:49 +0000\n Master asset: <MSAsset: 0x7ff8e06ee310> GUID: E3D2EA11-56D7-4613-B7F7-317378E14620 \n",
"<MSAssetCollection: 0x7ff8e06ee680> Server uploaded date: 2015-08-16 14:22:52 +0000\n Master asset: <MSAsset: 0x7ff8e06ee4f0> GUID: 554AF60A-D015-4AD7-AD85-37BBC0C739F8 \n",
"<MSAssetCollection: 0x7ff8e06ee860> Server uploaded date: 2015-08-16 14:17:24 +0000\n Master asset: <MSAsset: 0x7ff8e06ee6d0> GUID: A8332792-2ADB-4FD2-AE92-72A6208BD061 \n",
"<MSAssetCollection: 0x7ff8e06eea40> Server uploaded date: 2015-08-16 14:17:15 +0000\n Master asset: <MSAsset: 0x7ff8e06ee8b0> GUID: C2B9F554-B22D-40CE-9414-1E0F9D0FA0B4 \n",
"<MSAssetCollection: 0x7ff8e06eec20> Server uploaded date: 2015-08-16 14:02:28 +0000\n Master asset: <MSAsset: 0x7ff8e06eea90> GUID: C3F036F4-065E-457C-AA8D-B302C5D63701 \n",
"<MSAssetCollection: 0x7ff8e06eee00> Server uploaded date: 2015-08-16 14:18:48 +0000\n Master asset: <MSAsset: 0x7ff8e06eec70> GUID: DDA0D686-E24D-4B5E-97BE-96ED26B0152D \n",
"<MSAssetCollection: 0x7ff8e06eefe0> File name: IMG_0004.JPG\n Server uploaded date: 2015-08-15 21:45:17 +0000\n Master asset: <MSAsset: 0x7ff8e06eee50> GUID: 6FBB3F12-D82D-4C38-8FA3-2FA5CB7B9086 \n",
"<MSAssetCollection: 0x7ff8e2f78c40> Server uploaded date: 2015-08-16 14:24:35 +0000\n Master asset: <MSAsset: 0x7ff8e06ef030> GUID: 580AFC17-B3E4-4B36-AD3C-8567E78B4128 \n",
"<MSAssetCollection: 0x7ff8e2f05330> Server uploaded date: 2015-08-16 14:24:32 +0000\n Master asset: <MSAsset: 0x7ff8e2f05260> GUID: E72C0510-A20C-4F0E-AFFF-97E5B766CE6B \n",
"<MSAssetCollection: 0x7ff8e2f05580> Server uploaded date: 2015-08-16 14:18:24 +0000\n Master asset: <MSAsset: 0x7ff8e2f05430> GUID: EA5C74CE-04E5-468F-8ADD-B7AD603C3A20 \n",
"<MSAssetCollection: 0x7ff8e2f05720> File name: IMG_0795.JPG\n Server uploaded date: 2015-08-16 13:58:28 +0000\n Master asset: <MSAsset: 0x7ff8e2f055d0> GUID: 2C91CFFC-B9E4-4AF3-A017-CB68E7D34B11 \n",
"<MSAssetCollection: 0x7ff8e042b3a0> Server uploaded date: 2015-08-16 14:19:20 +0000\n Master asset: <MSAsset: 0x7ff8e042b2d0> GUID: 51427382-453D-43F2-999B-B80C7F287865 \n",
"<MSAssetCollection: 0x7ff8e042b540> Server uploaded date: 2015-08-16 14:17:05 +0000\n Master asset: <MSAsset: 0x7ff8e042b3f0> GUID: CC70FF67-7114-413F-8B39-BC96AAD35F42 \n",
"<MSAssetCollection: 0x7ff8e042b6e0> Server uploaded date: 2015-08-16 14:21:46 +0000\n Master asset: <MSAsset: 0x7ff8e042b590> GUID: F42AD34E-9021-4DE0-A0CC-7A034AA5D8A8 \n",
"<MSAssetCollection: 0x7ff8e042b880> Server uploaded date: 2015-08-16 14:17:18 +0000\n Master asset: <MSAsset: 0x7ff8e042b730> GUID: 97BEBD67-EFC7-4071-ACD7-3E3AC98150F5 \n",
"<MSAssetCollection: 0x7ff8e042ba20> Server uploaded date: 2015-08-16 14:23:40 +0000\n Master asset: <MSAsset: 0x7ff8e042b8d0> GUID: 08F18752-9D3B-40CD-A46B-400EB112682A \n",
"<MSAssetCollection: 0x7ff8e042bbc0> File name: IMG_0788.JPG\n Server uploaded date: 2015-08-15 21:45:17 +0000\n Master asset: <MSAsset: 0x7ff8e042ba70> GUID: A058C31D-4250-486B-B360-6D269CD9FAC7 \n",
"<MSAssetCollection: 0x7ff8e042bd60> Server uploaded date: 2015-08-16 14:17:39 +0000\n Master asset: <MSAsset: 0x7ff8e042bc10> GUID: 18A1785E-C7C9-453B-8BAF-3D41FFA0B8F8 \n",
"<MSAssetCollection: 0x7ff8e042bf00> Server uploaded date: 2015-08-16 14:23:46 +0000\n Master asset: <MSAsset: 0x7ff8e042bdb0> GUID: 7D41CA88-326F-4D87-80FD-41A5A34EC321 \n"
)
9/7/15 1:40:13.566 AM cloudphotosd[308]: MSSubscriber - 93064470 Found 42 new asset collections.
9/7/15 1:40:13.568 AM cloudphotosd[308]: Deleted asset collections: (
"<MSAssetCollection: 0x7ff8e329f400> Server uploaded date: 2015-08-16 14:22:05 +0000\n Master asset: <MSAsset: 0x7ff8e32aecf0> GUID: ABFAB974-EAFE-4057-80B9-8F2E8E8F00C0 \n",
"<MSAssetCollection: 0x7ff8e2f06b40> Server uploaded date: 2015-08-16 14:21:13 +0000\n Master asset: <MSAsset: 0x7ff8e329f450> GUID: 766E1D07-25B0-4790-BC1B-531BD9515234 \n",
"<MSAssetCollection: 0x7ff8e2f42cb0> Server uploaded date: 2015-08-19 20:02:02 +0000\n Master asset: <MSAsset: 0x7ff8e0416950> GUID: E115207B-FFAD-4279-868D-C1B165C10EBD \n",
"<MSAssetCollection: 0x7ff8e2f1b430> Server uploaded date: 2015-08-16 14:18:08 +0000\n Master asset: <MSAsset: 0x7ff8e2f42b70> GUID: 1F5C5E20-9398-48CF-A729-46DA7C453447 \n",
"<MSAssetCollection: 0x7ff8e2f752e0> Server uploaded date: 2015-08-16 14:18:14 +0000\n Master asset: <MSAsset: 0x7ff8e0494700> GUID: FB5618DB-D45A-4776-BF7A-657D180EBFEC \n",
"<MSAssetCollection: 0x7ff8e06f1c50> Server uploaded date: 2015-08-16 14:16:21 +0000\n Master asset: <MSAsset: 0x7ff8e2f51570> GUID: 7D7AAD8E-9F42-4ADB-B2A0-453537BAC6BE \n",
"<MSAssetCollection: 0x7ff8e332ce90> Server uploaded date: 2015-08-16 14:17:35 +0000\n Master asset: <MSAsset: 0x7ff8e06e94e0> GUID: 0EFC2827-A8CE-4D35-BE28-8ACF2C47FFA6 \n",
"<MSAssetCollection: 0x7ff8e330b9c0> Server uploaded date: 2015-08-16 14:21:55 +0000\n Master asset: <MSAsset: 0x7ff8e06fa040> GUID: 85DA8A4D-BD42-45F3-8C0E-61734B06A731 \n",
"<MSAssetCollection: 0x7ff8e333bd70> Server uploaded date: 2015-08-16 14:02:46 +0000\n Master asset: <MSAsset: 0x7ff8e06b1ef0> GUID: C626CEF1-4A8C-4857-800C-AD76C33A8934 \n",
"<MSAssetCollection: 0x7ff8e0648800> Server uploaded date: 2015-08-16 14:17:32 +0000\n Master asset: <MSAsset: 0x7ff8e06dbf00> GUID: E90FE4A2-5C44-47E0-91B5-4F0E01E19643 \n",
"<MSAssetCollection: 0x7ff8e0666ad0> Server uploaded date: 2015-08-16 14:23:43 +0000\n Master asset: <MSAsset: 0x7ff8e06e9670> GUID: 5D055743-2D73-4B71-8E9F-A7939F2C55BB \n",
"<MSAssetCollection: 0x7ff8e06e4720> File name: 1901 William Miller,.jpg\n Server uploaded date: 2015-09-07 03:15:33 +0000\n Master asset: <MSAsset: 0x7ff8e3352f90> GUID: 54A17BAE-9A18-4F22-B798-257C6077C6B6 \n",
"<MSAssetCollection: 0x7ff8e331b760> Server uploaded date: 2015-08-16 14:18:30 +0000\n Master asset: <MSAsset: 0x7ff8e333b950> GUID: C0C3A162-8290-4F0E-8FEA-B41800EB07EA \n",
"<MSAssetCollection: 0x7ff8e06b4f10> Server uploaded date: 2015-08-16 14:23:18 +0000\n Master asset: <MSAsset: 0x7ff8e3339800> GUID: 1540C08C-3BE2-42E2-A3BF-526B5B615836 \n",
"<MSAssetCollection: 0x7ff8e3321d50> Server uploaded date: 2015-08-16 14:21:49 +0000\n Master asset: <MSAsset: 0x7ff8e331f8a0> GUID: F778641A-ECA3-41CF-8E7C-F517F01561B0 \n",
"<MSAssetCollection: 0x7ff8e06b3280> Server uploaded date: 2015-08-16 14:16:56 +0000\n Master asset: <MSAsset: 0x7ff8e3352bb0> GUID: F2612BEC-A2D1-4381-A8D3-34CDC5DBF79F \n",
"<MSAssetCollection: 0x7ff8e0669050> Server uploaded date: 2015-08-16 14:22:00 +0000\n Master asset: <MSAsset: 0x7ff8e3353160> GUID: 8A9A743F-6ACA-467B-A41C-2020039DD3A4 \n",
"<MSAssetCollection: 0x7ff8e06b4e50> Server uploaded date: 2015-08-16 14:17:01 +0000\n Master asset: <MSAsset: 0x7ff8e0648710> GUID: 031474C2-2691-4DE0-B158-FF86DD53BCCA \n",
"<MSAssetCollection: 0x7ff8e333b720> Server uploaded date: 2015-08-16 14:23:11 +0000\n Master asset: <MSAsset: 0x7ff8e06fa830> GUID: 23A67AD3-8894-4719-8B0E-89FDA0E14C4F \n",
"<MSAssetCollection: 0x7ff8e0665c50> Server uploaded date: 2015-08-16 13:55:53 +0000\n Master asset: <MSAsset: 0x7ff8e0694eb0> GUID: 8816350D-6796-474D-87FD-472A30B54F0B \n",
"<MSAssetCollection: 0x7ff8e068b660> Server uploaded date: 2015-08-16 14:17:47 +0000\n Master asset: <MSAsset: 0x7ff8e06667e0> GUID: EA5F50E1-AB4E-472F-A276-3247FCAE0058 \n",
"<MSAssetCollection: 0x7ff8e0648ad0> Server uploaded date: 2015-08-16 14:23:37 +0000\n Master asset: <MSAsset: 0x7ff8e06d2f00> GUID: A42B9128-B7BD-4C8F-BB9B-5B7D23013464 \n",
"<MSAssetCollection: 0x7ff8e068fa70> Server uploaded date: 2015-08-16 14:17:44 +0000\n Master asset: <MSAsset: 0x7ff8e06f15f0> GUID: 9C2E19C2-AEAA-4702-A904-B3F6B64CBB66 \n",
"<MSAssetCollection: 0x7ff8e332eac0> Server uploaded date: 2015-08-16 14:18:21 +0000\n Master asset: <MSAsset: 0x7ff8e3309120> GUID: A91CD0E0-E254-46C9-9511-3316D45AF0D4 \n",
"<MSAssetCollection: 0x7ff8e06fa730> File name: IMG_0006.JPG\n Server uploaded date: 2015-08-15 21:45:17 +0000\n Master asset: <MSAsset: 0x7ff8e0667610> GUID: 612ADAE5-5FBB-4B7E-88C5-19617516970A \n",
"<MSAssetCollection: 0x7ff8e06a53d0> Server uploaded date: 2015-08-16 14:22:38 +0000\n Master asset: <MSAsset: 0x7ff8e0669380> GUID: 0E5C011C-1348-4FD5-BECE-E6DD3A02A8C4 \n",
"<MSAssetCollection: 0x7ff8e06f7720> File name: IMG_0015.JPG\n Server uploaded date: 2015-08-15 21:45:17 +0000\n Master asset: <MSAsset: 0x7ff8e06b0c30> GUID: 04E52EC6-3693-477D-ADAE-BFE30674B345 \n",
"<MSAssetCollection: 0x7ff8e06b3020> Server uploaded date: 2015-08-16 14:19:44 +0000\n Master asset: <MSAsset: 0x7ff8e06a1db0> GUID: EB91D70A-98B4-41CB-BDAB-8DF2E1686D00 \n",
"<MSAssetCollection: 0x7ff8e333c460> Server uploaded date: 2015-08-16 14:21:37 +0000\n Master asset: <MSAsset: 0x7ff8e068b730> GUID: 14E5DFA0-8CF3-4125-BFDB-A4C9F016113E \n",
"<MSAssetCollection: 0x7ff8e06f2240> Server uploaded date: 2015-08-16 14:20:08 +0000\n Master asset: <MSAsset: 0x7ff8e06e5e70> GUID: 5CD9FD8F-4121-4B19-874D-B53257FF5C78 \n",
"<MSAssetCollection: 0x7ff8e33185c0> Server uploaded date: 2015-08-16 14:22:02 +0000\n Master asset: <MSAsset: 0x7ff8e06ae380> GUID: 52BEAFF5-9895-481F-90DA-44265E7D6AD1 \n",
"<MSAssetCollection: 0x7ff8e06e4010> Server uploaded date: 2015-08-16 14:21:05 +0000\n Master asset: <MSAsset: 0x7ff8e06f4980> GUID: 6E32CD31-3115-4F10-A87D-8642FBA539D6 \n",
"<MSAssetCollection: 0x7ff8e06f2d60> Server uploaded date: 2015-08-16 14:23:31 +0000\n Master asset: <MSAsset: 0x7ff8e3324d90> GUID: FF56B1CC-3F4E-472B-83EF-35EA2E072A15 \n",
"<MSAssetCollection: 0x7ff8e33530b0> File name: IMG_0858.JPG\n Server uploaded date: 2015-08-16 13:57:13 +0000\n Master asset: <MSAsset: 0x7ff8e06f2a10> GUID: FC6DF47D-FE90-4776-A16D-CC8263E77E44 \n",
"<MSAssetCollection: 0x7ff8e3352ed0> Server uploaded date: 2015-08-16 14:05:38 +0000\n Master asset: <MSAsset: 0x7ff8e0688620> GUID: 64EBDC35-4823-4C88-9497-1D8479D15E0E \n",
"<MSAssetCollection: 0x7ff8e06e5750> Server uploaded date: 2015-08-16 14:18:03 +0000\n Master asset: <MSAsset: 0x7ff8e06a19d0> GUID: EAA75FFC-1816-4353-9B48-05C53F3A29A6 \n",
"<MSAssetCollection: 0x7ff8e332efd0> Server uploaded date: 2015-08-16 14:23:04 +0000\n Master asset: <MSAsset: 0x7ff8e06fadc0> GUID: 8ED8552D-DD5A-4E02-B6EB-95A69C2DC14B \n",
"<MSAssetCollection: 0x7ff8e06e3a60> Server uploaded date: 2015-08-16 14:22:45 +0000\n Master asset: <MSAsset: 0x7ff8e06e3cf0> GUID: 20204F1D-6D7D-4874-88C7-22575E938205 \n",
"<MSAssetCollection: 0x7ff8e333ad00> Server uploaded date: 2015-08-16 14:06:44 +0000\n Master asset: <MSAsset: 0x7ff8e331c5c0> GUID: 6D9C5D72-7F3E-4F4A-8E31-C31E9D8DD4F9 \n",
"<MSAssetCollection: 0x7ff8e066e110> Server uploaded date: 2015-08-16 14:24:50 +0000\n Master asset: <MSAsset: 0x7ff8e06e5a10> GUID: B327582B-F2D2-4573-907C-FBFDD8C906FC \n",
"<MSAssetCollection: 0x7ff8e3328da0> Server uploaded date: 2015-08-16 14:24:42 +0000\n Master asset: <MSAsset: 0x7ff8e3329fa0> GUID: BE1B3ED1-B189-4BB8-AE49-CB34FFE80C72 \n",
"<MSAssetCollection: 0x7ff8e3331ab0> Server uploaded date: 2015-08-16 14:17:54 +0000\n Master asset: <MSAsset: 0x7ff8e06c0de0> GUID: 0DF61F00-8B02-4FF5-A1C4-AF3E5DD0BAFE \n"
)
9/7/15 1:40:13.598 AM cloudphotosd[308]: MSSubscriber - 93064470 Server-side configuration has changed. Reading new values.
9/7/15 1:40:13.598 AM cloudphotosd[308]: MSSubscriber - 93064470 Server-side configuration has changed. Reading new values.
9/7/15 1:40:16.269 AM cloudphotosd[308]: MSSubscriber - 93064470 Scheduling retrieval of 1 assets.
9/7/15 1:40:16.274 AM cloudphotosd[308]: MSSubscriber - 93064470 Retrieving 1 assets...
9/7/15 1:40:17.684 AM cloudphotosd[308]: MSSubscriber - 93064470 Finished retrieving assets. Checking for errors on 0 assets...
9/7/15 1:41:16.267 AM cloudphotosd[308]: New connection request from 7914
9/7/15 1:43:13.158 AM cloudphotosd[308]: New connection request from 7923
9/7/15 1:43:26.104 AM cloudphotosd[308]: Determine service transition start: service=com.apple.photo.icloud.myphotostream personId=93064470 lastKnownPersonId=93064470 targetState=0
9/7/15 1:43:26.104 AM cloudphotosd[308]: Determine service transition end: 6, currentState: 5, shouldEnableService: 0
9/7/15 1:43:26.105 AM cloudphotosd[308]: Forgetting everything about person ID 93064470...
9/7/15 1:43:26.135 AM cloudphotosd[308]: Person ID 93064470 forgotten.
9/7/15 1:43:26.136 AM cloudphotosd[308]: Media stream daemon stopping.
9/7/15 1:44:21.458 AM cloudphotosd[308]: Determine service transition start: service=com.apple.photo.icloud.myphotostream personId=93064470 lastKnownPersonId=(null) targetState=1
9/7/15 1:44:21.459 AM cloudphotosd[308]: Determine service transition end: 3, currentState: 3, shouldEnableService: 1
9/7/15 1:44:21.521 AM cloudphotosd[308]: Media stream daemon starting...
9/7/15 1:44:21.922 AM cloudphotosd[308]: Refreshing server-side configuration.
9/7/15 1:44:21.928 AM cloudphotosd[308]: Determine service transition start: service=com.apple.photo.icloud.cloudphoto personId=93064470 lastKnownPersonId=(null) targetState=1
9/7/15 1:44:21.928 AM cloudphotosd[308]: Determine service transition end: 3, currentState: 3, shouldEnableService: 1
9/7/15 1:44:22.049 AM cloudphotosd[308]: MSSubscriber - 93064470 Found 50 new asset collections.
9/7/15 1:44:22.063 AM cloudphotosd[308]: MSSubscriber - 93064470 Found 50 new asset collections.
9/7/15 1:44:22.082 AM cloudphotosd[308]: MSSubscriber - 93064470 Found 50 new asset collections.
.
.[many more similar....]
.
9/7/15 11:34:50.371 AM cloudphotosd[308]: Determine service transition start: service=com.apple.photo.icloud.cloudphoto personId=93064470 lastKnownPersonId=93064470 targetState=0
9/7/15 11:34:50.372 AM cloudphotosd[308]: Determine service transition end: 6, currentState: 5, shouldEnableService: 0
9/7/15 11:34:50.372 AM cloudphotosd[308]: Suspending library manager operation queue for operation <CSLibraryManagerStopSyncingOperation: 0x7ff8e06d1000>{name = '(null)'}
9/7/15 11:34:50.382 AM cloudphotosd[308]: Resuming library manager operation queue for operation <CSLibraryManagerDisableCloudLibraryOperation: 0x7ff8e2802e40>{name = '(null)'}
9/7/15 11:34:50.382 AM cloudphotosd[308]: Suspending library manager operation queue for operation <CSLibraryManagerDisableCloudLibraryOperation: 0x7ff8e2802e40>{name = '(null)'}
9/7/15 11:34:58.316 AM cloudphotosd[308]: Determine service transition start: service=com.apple.photo.icloud.cloudphoto personId=93064470 lastKnownPersonId=(null) targetState=1
9/7/15 11:34:58.316 AM cloudphotosd[308]: Determine service transition end: 3, currentState: 3, shouldEnableService: 1
9/7/15 12:10:10.175 PM cloudphotosd[308]: Skipping operation <CSLibraryManagerFetchMissingResourcesOperation: 0x7ff8e0415c40>{name = '(null)'}, library manager operation duplicate to another operation
9/7/15 12:10:30.618 PM cloudphotosd[308]: Skipping operation <CSLibraryManagerMovePendingUploadsToUploadedOperation: 0x7ff8e041eea0>{name = '(null)'}, library manager operation duplicate to another operation
.[many more similar....]
It certainly looks to me like it's doing more than just comparing items. It's current compare and/or upload rate is about one item per minute.