exponential backoff broken when uploading files

[Christian Beer]

A working CC 6.4.5 on Windows Vista Home Premium. 2 CPU's, GPU deactivated. One Project with work. WiFi network deactivated to see what the client does with the ready to upload files. Here is a short excerpt of the logfile:

03.01.2009 10:48:00|Einstein@Home|Scheduler request failed: Couldn't resolve host name
03.01.2009 10:48:02|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__112_S5R4a_1_0
03.01.2009 10:48:30|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__113_S5R4a_0_0
03.01.2009 10:49:01|Einstein@Home|Sending scheduler request: To fetch work.  Requesting 55053 seconds of work, reporting 0 completed tasks
03.01.2009 10:49:04|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__112_S5R4a_1_0
03.01.2009 10:49:06|Einstein@Home|Scheduler request failed: Couldn't resolve host name
03.01.2009 10:49:32|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__113_S5R4a_0_0
03.01.2009 10:50:06|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__112_S5R4a_1_0
03.01.2009 10:50:07|Einstein@Home|Sending scheduler request: To fetch work.  Requesting 55459 seconds of work, reporting 0 completed tasks
03.01.2009 10:50:12|Einstein@Home|Scheduler request failed: Couldn't resolve host name
03.01.2009 10:50:34|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__113_S5R4a_0_0
03.01.2009 10:51:08|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__112_S5R4a_1_0
03.01.2009 10:51:13|Einstein@Home|Sending scheduler request: To fetch work.  Requesting 55764 seconds of work, reporting 0 completed tasks
03.01.2009 10:51:18|Einstein@Home|Scheduler request failed: Couldn't resolve host name
03.01.2009 10:51:35|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__113_S5R4a_0_0
03.01.2009 10:52:10|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__112_S5R4a_1_0
03.01.2009 10:52:19|Einstein@Home|Sending scheduler request: To fetch work.  Requesting 55965 seconds of work, reporting 0 completed tasks
03.01.2009 10:52:24|Einstein@Home|Scheduler request failed: Couldn't resolve host name
03.01.2009 10:52:37|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__113_S5R4a_0_0
03.01.2009 10:53:12|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__112_S5R4a_1_0
03.01.2009 10:53:25|Einstein@Home|Sending scheduler request: To fetch work.  Requesting 56370 seconds of work, reporting 0 completed tasks
03.01.2009 10:53:30|Einstein@Home|Scheduler request failed: Couldn't resolve host name
03.01.2009 10:53:39|Einstein@Home|Backing off 1 min 0 sec on upload of h1_0654.45_S5R4__113_S5R4a_0_0

According to PersFileXfer there should be an exponential backoff with this transient error. These two files are representet in client_state.xml as follows:

<file_info>
    <name>h1_0654.45_S5R4__113_S5R4a_0_0</name>
    <nbytes>236109.000000</nbytes>
    <max_nbytes>6000000.000000</max_nbytes>
    <md5_cksum>618a6c4c8886620c5d5fdf583996061b</md5_cksum>
    <generated_locally/>
    <status>1</status>
    <upload_when_present/>
    <url>http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/file_upload_handler</url>
    <persistent_file_xfer>
        <num_retries>1</num_retries>
        <first_request_time>1230945486.657211</first_request_time>
        <next_request_time>1230976541.593010</next_request_time>
        <time_so_far>510.182392</time_so_far>
        <last_bytes_xferred>0.000000</last_bytes_xferred>
    </persistent_file_xfer>
    <signed_xml>
  <name>h1_0654.45_S5R4__113_S5R4a_0_0</name>
  <generated_locally/>
  <upload_when_present/>
  <max_nbytes>6000000</max_nbytes>
  <url>http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/file_upload_handler</url>
    </signed_xml>
    <xml_signature>
8f17f585673341537637fe5ce8f98aefd33e1503b89295be1609c0d5cf6adab3
a754c4b7e12a578b8232f867bc986524cad3ffdffb2f541a2b4e85f0229c455a
5e41539f6d87dedad53d7c2a0469cc94a739354fc88dfea1528ea5c31105eea7
ab9674240295b7c341c6c823852ffac0057ae502d644757a3c07333e7b7b873b
.
    </xml_signature>
</file_info>
<file_info>
    <name>h1_0654.45_S5R4__112_S5R4a_1_0</name>
    <nbytes>236119.000000</nbytes>
    <max_nbytes>6000000.000000</max_nbytes>
    <md5_cksum>692e7fd85c8c47a10d41d48af5d85f3d</md5_cksum>
    <generated_locally/>
    <status>1</status>
    <upload_when_present/>
    <url>http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/file_upload_handler</url>
    <persistent_file_xfer>
        <num_retries>0</num_retries>
        <first_request_time>1230956469.291210</first_request_time>
        <next_request_time>1230976514.199411</next_request_time>
        <time_so_far>329.128809</time_so_far>
        <last_bytes_xferred>0.000000</last_bytes_xferred>
    </persistent_file_xfer>
    <signed_xml>
  <name>h1_0654.45_S5R4__112_S5R4a_1_0</name>
  <generated_locally/>
  <upload_when_present/>
  <max_nbytes>6000000</max_nbytes>
  <url>http://einstein.phys.uwm.edu/EinsteinAtHome_cgi/file_upload_handler</url>
    </signed_xml>
    <xml_signature>
5718dde72b830e579bad81dc94d93278af0790c367da002a91261f9781278892
7a42adac3c83eb09339fa60fd0f641971bd7feeb1430613bc249a452c301d331
a176399314b3489a8ad95dec6ba70277e8aa398f189303de580628c76b536859
bddd996174f82411c38babd04e5b9b9aab7d44010edea619f75d1d8ebbea2952
.
    </xml_signature>
</file_info>

I can provide more logs if needed as this happens as soon as I deactivate my network (hardware switch).

[davea]

Exponential backoff is used when the server is down, not when the network is down.