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Author SHA1 Message Date
Michał Matczuk 38dc3e93ee fshttp: add prometheus metrics for HTTP status code 
This patch adds rclone_http_status_code counter vector labeled by

* host,
* method,
* code.

It allows to see HTTP errors, backoffs etc.

The Metrics struct is designed for extensibility.
Adding new metrics is a matter of adding them to Metrics struct and including them in the response handling.

This feature has been discussed in the forum [1].

[1] https://forum.rclone.org/t/prometheus-metrics/14484
 2021-11-17 18:38:12 +03:00
Michał Matczuk 6893ce0bbf s3: do not resize buf on put to memBuf 
This is handled by Pool implementation.
 2020-04-11 16:35:48 +01:00
Michał Matczuk 399cf18013 s3: use single memory pool 
Previously we had a map of pools for different chunk sizes.
In practice the mapping is not very useful and requires a lock.
Pools of size other that ChunkSize can only happen when we have a huge file (over 10k * ChunkSize).
We need to have a bunch of identically sized huge files.
In such case most likely ChunkSize should be increased.

The mapping and its lock is replaced with a single initialised pool for ChunkSize, in other cases pool is allocated and freed on per file basis.
 2020-04-11 16:34:05 +01:00
Michał Matczuk 964f1f6a7e fs/accounting: Restore "Max number of stats groups reached" log line 
Changed log level to debug.
 2020-02-12 21:21:25 +00:00
Michał Matczuk e75c1f70bb backend/s3: Added 500 as retryErrorCode 
The error code 500 Internal Error indicates that Amazon S3 is unable to handle the request at that time. The error code 503 Slow Down typically indicates that the requests to the S3 bucket are very high, exceeding the request rates described in Request Rate and Performance Guidelines.

Because Amazon S3 is a distributed service, a very small percentage of 5xx errors are expected during normal use of the service. All requests that return 5xx errors from Amazon S3 can and should be retried, so we recommend that applications making requests to Amazon S3 have a fault-tolerance mechanism to recover from these errors.

https://aws.amazon.com/premiumsupport/knowledge-center/http-5xx-errors-s3/
 2020-02-12 11:43:18 +00:00
Michał Matczuk 19a4d74ee7 backend/s3: Fail fast multipart upload 
When a part upload request fails error is returned and gCtx is cancelled.
This does not prevent from other parts being tried.
They immediately fail due to a canceled context, but are retried by rclone anyway...

Example AWS debug output

```
-----------------------------------------------------
2020/02/11 14:12:17 DEBUG: Retrying Request s3/UploadPart, attempt 4
2020/02/11 14:12:17 DEBUG: Request s3/UploadPart Details:
---[ REQUEST POST-SIGN ]-----------------------------
PUT /backuptest-rclone/huge/file.db?partNumber=11&uploadId=190939b4-3c43-4b98-ac11-92303e3f11b0 HTTP/1.1
Host: 192.168.100.99:9000
User-Agent: aws-sdk-go/1.23.8 (go1.13.1; linux; amd64)
Content-Length: 5242880
Authorization: AWS4-HMAC-SHA256 Credential=miniouser/20200211/us-east-1/s3/aws4_request, SignedHeaders=content-length;content-md5;expect;host;x-amz-content-sha256;x-amz-date, Signature=3fc03a01f651cec09b05290459e9ceb26db9a8aa00c4e1b16e8cf5617eb81da8
Content-Md5: XzY+DlipXwbL6bvGYsXftg==
Expect: 100-Continue
X-Amz-Content-Sha256: c036cbb7553a909f8b8877d4461924307f27ecb66cff928eeeafd569c3887e29
X-Amz-Date: 20200211T131217Z
Accept-Encoding: gzip

-----------------------------------------------------
http://192.168.100.99:9000/backuptest-rclone/huge/file.db?partNumber=11&uploadId=190939b4-3c43-4b98-ac11-92303e3f11b0
2020/02/11 14:12:17 DEBUG: Response s3/UploadPart Details:
---[ RESPONSE ]--------------------------------------
HTTP/1.1 500 InternalServerError
Content-Length: 0
-----------------------------------------------------
UploadPartWithContext() error InternalError: We encountered an internal error. Please try again
	status code: 500, request id: , host id:

2020/02/11 14:12:18 DEBUG ERROR: Request s3/UploadPart:
---[ REQUEST DUMP ERROR ]-----------------------------
context canceled
------------------------------------------------------
UploadPartWithContext() error RequestCanceled: request context canceled
caused by: context canceled
2020/02/11 14:12:20 DEBUG ERROR: Request s3/UploadPart:
---[ REQUEST DUMP ERROR ]-----------------------------
context canceled
------------------------------------------------------
UploadPartWithContext() error RequestCanceled: request context canceled
caused by: context canceled
2020/02/11 14:12:22 DEBUG ERROR: Request s3/UploadPart:
---[ REQUEST DUMP ERROR ]-----------------------------
context canceled
------------------------------------------------------
UploadPartWithContext() error RequestCanceled: request context canceled
caused by: context canceled
```

This adds a fail fast behaviour in case the context was cancelled.
 2020-02-12 11:40:34 +00:00
Michał Matczuk eb10ac346f fs/accounting: Added StatsInfo locking in statsGroups sum function (#3844) 
Without the fix we can have a race, example:

```
Write at 0x00c000432039 by goroutine 187:
  github.com/rclone/rclone/fs/accounting.(*StatsInfo).Error()
      fs/accounting/stats.go:495 +0x3f1
  github.com/rclone/rclone/fs/accounting.(*StatsInfo).Error-fm()
      fs/accounting/stats.go:477 +0x55
  github.com/rclone/rclone/fs/walk.listRwalk.func1()
      fs/walk/walk.go:162 +0xd2
  github.com/rclone/rclone/fs/walk.walk.func2()
      fs/walk/walk.go:402 +0x30f

Previous read at 0x00c000432039 by goroutine 184:
  github.com/rclone/rclone/fs/accounting.(*statsGroups).sum()
      fs/accounting/stats_groups.go:351 +0xcae
  github.com/rclone/rclone/fs/accounting.rcTransferredStats()
      fs/accounting/stats_groups.go:132 +0x1f4
```

Fixes #3844
 2020-01-04 16:45:24 +00:00
Michał Matczuk 3247e69cf5 fs/rc/jobs: ExecuteJob propagate the error returned by function 
Without this patch the resulting error is first converted to string and then recreated.
This makes it impossible to use the defined error types to figure out the cause of the error,
and may result in invalid HTTP status codes.

This patch adds a test TestExecuteJobErrorPropagation to validate that the errors are
properly propagated.
 2019-08-22 16:10:48 +01:00
Michal Matczuk 5d6593de4f * rc/jobs: Add SetInitialJobID function that allows for setting the jobID 2019-08-21 11:01:39 +01:00
Michał Matczuk 712f7e38f7 backend/local: fadvise run syscall on a dedicated go routine 
Before we issued an additional syscall periodically on a hot path.
This patch offloads the fadvise syscall to a dedicated go routine.
 2019-08-14 21:01:39 +01:00
Michał Matczuk f396550934 backend/local: Avoid polluting page cache when uploading local files to remote backends 
This patch makes rclone keep linux page cache usage under control when
uploading local files to remote backends. When opening a file it issues
FADV_SEQUENTIAL to configure read ahead strategy. While reading
the file it issues FADV_DONTNEED every 128kB to free page cache from
already consumed pages.

```
fadvise64(5, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
read(5, "\324\375\251\376\213\361\240\224>\t5E\301\331X\274^\203oA\353\303.2'\206z\177N\27fB"..., 32768) = 32768
read(5, "\361\311\vW!\354_\317hf\276t\307\30L\351\272T\342C\243\370\240\213\355\210\v\221\201\177[\333"..., 32768) = 32768
read(5, ":\371\337Gn\355C\322\334 \253f\373\277\301;\215\n\240\347\305\6N\257\313\4\365\276ANq!"..., 32768) = 32768
read(5, "\312\243\360P\263\242\267H\304\240Y\310\367sT\321\256\6[b\310\224\361\344$Ms\234\5\314\306i"..., 32768) = 32768
fadvise64(5, 0, 131072, POSIX_FADV_DONTNEED) = 0
read(5, "m\251\7a\306\226\366-\v~\"\216\353\342~0\fht\315DK0\236.\\\201!A#\177\320"..., 32768) = 32768
read(5, "\7\324\207,\205\360\376\307\276\254\250\232\21G\323n\255\354\234\257P\322y\3502\37\246\21\334^42"..., 32768) = 32768
read(5, "e{*\225\223R\320\212EG:^\302\377\242\337\10\222J\16A\305\0\353\354\326P\336\357A|-"..., 32768) = 32768
read(5, "n\23XA4*R\352\234\257\364\355Y\204t9T\363\33\357\333\3674\246\221T\360\226\326G\354\374"..., 32768) = 32768
fadvise64(5, 131072, 131072, POSIX_FADV_DONTNEED) = 0
read(5, "SX\331\251}\24\353\37\310#\307|h%\372\34\310\3070YX\250s\2269\242\236\371\302z\357_"..., 32768) = 32768
read(5, "\177\3500\236Y\245\376NIY\177\360p!\337L]\2726\206@\240\246pG\213\254N\274\226\303\357"..., 32768) = 32768
read(5, "\242$*\364\217U\264]\221Y\245\342r\t\253\25Hr\363\263\364\336\322\t\325\325\f\37z\324\201\351"..., 32768) = 32768
read(5, "\2305\242\366\370\203tM\226<\230\25\316(9\25x\2\376\212\346Q\223 \353\225\323\264jf|\216"..., 32768) = 32768
fadvise64(5, 262144, 131072, POSIX_FADV_DONTNEED) = 0
```

Page cache consumption per file can be checked with tools like [pcstat](https://github.com/tobert/pcstat).

This patch does not have a performance impact. Please find below results
of an experiment comparing local copy of 1GB file with and without this
patch.

With the patch:

```
(mmt/fadvise)$ pcstat 1GB.bin.1
+-----------+----------------+------------+-----------+---------+
| Name      | Size (bytes)   | Pages      | Cached    | Percent |
|-----------+----------------+------------+-----------+---------|
| 1GB.bin.1 | 1073741824     | 262144     | 0         | 000.000 |
+-----------+----------------+------------+-----------+---------+
(mmt/fadvise)$ taskset -c 0 /usr/bin/time -v ./rclone copy 1GB.bin.1 /var/empty/rclone
        Command being timed: "./rclone copy 1GB.bin.1 /var/empty/rclone"
        User time (seconds): 13.19
        System time (seconds): 1.12
        Percent of CPU this job got: 96%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:14.81
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 27660
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 2212
        Voluntary context switches: 5755
        Involuntary context switches: 9782
        Swaps: 0
        File system inputs: 4155264
        File system outputs: 2097152
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
(mmt/fadvise)$ pcstat 1GB.bin.1
+-----------+----------------+------------+-----------+---------+
| Name      | Size (bytes)   | Pages      | Cached    | Percent |
|-----------+----------------+------------+-----------+---------|
| 1GB.bin.1 | 1073741824     | 262144     | 0         | 000.000 |
+-----------+----------------+------------+-----------+---------+
```

Without the patch:

```
(master)$ taskset -c 0 /usr/bin/time -v ./rclone copy 1GB.bin.1 /var/empty/rclone
        Command being timed: "./rclone copy 1GB.bin.1 /var/empty/rclone"
        User time (seconds): 14.46
        System time (seconds): 0.81
        Percent of CPU this job got: 93%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:16.41
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 27600
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 2228
        Voluntary context switches: 7190
        Involuntary context switches: 1980
        Swaps: 0
        File system inputs: 2097152
        File system outputs: 2097152
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
(master)$ pcstat 1GB.bin.1
+-----------+----------------+------------+-----------+---------+
| Name      | Size (bytes)   | Pages      | Cached    | Percent |
|-----------+----------------+------------+-----------+---------|
| 1GB.bin.1 | 1073741824     | 262144     | 262144    | 100.000 |
+-----------+----------------+------------+-----------+---------+
```
 2019-08-08 23:41:52 +01:00