Two jobs were missing from the job list for failure notification
* test-ubuntu-tls-io-threads
* test-sanitizer-force-defrag
Signed-off-by: Harkrishn Patro <harkrisp@amazon.com>
Addresses the failure here:
https://github.com/valkey-io/valkey/actions/runs/13000845302/job/36259016156#step:5:7272.
This change does three things:
1. For some reason TCL 8.5 (which is used on macos) is handling `\x03ba`
as `\0xba`, according to
https://www.tcl-lang.org/man/tcl8.5/TclCmd/Tcl.htm#M27 so we encode
"bar" using hex escapes too.
2. Fix a spacing issue.
3. Make it so that if the restore fails, it immediately errors.
---------
Signed-off-by: Madelyn Olson <madelyneolson@gmail.com>
Signed-off-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
Co-authored-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
Do command existence and arity checks when loading AOF to avoid crash
Currently, loading commands such as `cluster` or `cluster slots xxx`
from AOF will cause the server to crash.
1. `cluster` is a container command, and executing proc will cause a
crash because we do not check subcommand and arity.
2. `cluster slots xxx`, arity check fail, reply with an error from the
AOF client and trigger a panic.
Of course, there are many other ways for a problematic AOF to cause the
panic, but it is still necessary do some basic checks before executing.
In this way, in these basic cases, we can print useful error messages
instead of crashing directly.
Signed-off-by: Binbin <binloveplay1314@qq.com>
Use Linux syscall mmap/munmap to manage a RDMA memory region, then we
have a guard page protected VMA like (cat /proc/PID/maps):
785018afe000-785018aff000 ---p 00000000 00:00 0 -> top guard page
785018aff000-785018bff000 rw-p 00000000 00:00 0 -> RDMA memory region
785018bff000-785018c00000 ---p 00000000 00:00 0 -> bottom guard page
Once any code accesses memory unexpectedly, segment fault occurs.
Signed-off-by: zhenwei pi <zhenwei.pi@linux.dev>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
In C, we had better initialize every variable in struct, this PR fixes
one missed variable Initialization.
---------
Signed-off-by: hwware <wen.hui.ware@gmail.com>
This address 2 issues:
1. It is possible (somehow) that the inner server client (r) was not
working resp 3 when entering this test.
this makes sure it does.
2. in case the test failed it might leave the redirection client closed.
there is a cross test assumption it should be open, so moved most of the
assert checks to the end of the test.
example fail:
https://github.com/valkey-io/valkey/actions/runs/12979601179/job/36195523412
---------
Signed-off-by: Ran Shidlansik <ranshid@amazon.com>
New config `rdb-version-check` with values:
* `strict`: Reject future RDB versions.
* `relaxed`: Try parsing future RDB versions and fail only when an
unknown RDB opcode or type is encountered.
This can make it possible for Valkey 8.1 to try read a dump from for
example Valkey 9.0 or later on a best-effort basis. The conditions for
when this is expected to work can be defined when the future Valkey
versions are released. Loading is expected to fail in the following
cases:
* If the data set contains any new key types or other data elements not
supported by the current version.
* If the RDB contains new representations or encodings of existing key
types or other data elements.
This change also prepares for the next RDB version bump. A range of RDB
versions (12-79) is reserved, since it's expected to be used by foreign
software RDB versions, so Valkey will not accept versions in this range
even with the `relaxed` version check. The DUMP/RESTORE format has no
magic string; only the RDB version number.
This change also prepares for the magic string to change from REDIS to
VALKEY next time we bump the RDB version.
Related to #1108.
---------
Signed-off-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
Co-authored-by: Madelyn Olson <madelyneolson@gmail.com>
Use-after-free has been detect by address sanitizer, such as in this
test run:
https://github.com/valkey-io/valkey/actions/runs/12981530413/job/36200075972?pr=1620#step:5:1339
`hashtableShrinkIfNeeded` may free one of the hash tables and invalidate
the variables used by the `fillBucketHole(ht, b, pos_in_bucket,
table_index)` just after, causing use-after-free. Fill bucket hole first
and shrink afterwards is assumed to solve the issue. (Not reproduced
locally.)
Signed-off-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
Might close https://github.com/valkey-io/valkey/issues/1484.
I noticed that we don't disable pause after fork on the last test that
was getting executed, so it might getting stuck in pause loops after the
test ends if it tries another psync for any reason.
---------
Signed-off-by: Madelyn Olson <madelyneolson@gmail.com>
Fixes the unit test for hashtable random fairness intermittent failures when
running with the `--accurate` flag.
https://github.com/valkey-io/valkey/actions/runs/12969591890/job/36173815884#step:10:105
The test case picks a random element out of 400, repeated 1M times, and
then checks that 60% of the elements are picked within 3 standard
deviations from the number of times they're expected to be picked. In
this test run (with `--accurate`), the expected number is 2500 and the
standard deviation is 50, which is only 2% of the expected value. This
makes the check too strict and makes the test flaky.
As an alternative, we allow 80% of the elements to be picked within 10%
of the expected number. With this alternative condition, we can also
raise the check for the non-edge case from 60% to 80% of the elements to
be within 3 standard deviations. (With fewer repetitions, 3 standard
deviations is greater than 10% of the expected value, so this new
condition only affects the `--accurate` test run.)
Additional change: Set a random seed to the hash function in the test
suite. Until now, we only seeded the random number generator.
Signed-off-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
As discussed in PR #336.
We have different types of resources like CPU, memory, network, etc. The
`slowlog` can only record commands eat lots of CPU during the processing
phase (doesn't include read/write network time), but can not record
commands eat too many memory and network. For example:
1. run "SET key value(10 megabytes)" command would not be recored in
slowlog, since when processing it the SET command only insert the
value's pointer into db dict. But that command eats huge memory in query
buffer and bandwidth from network. In this case, just 1000 tps can cause
10GB/s network flow.
2. run "GET key" command and the key's value length is 10 megabytes. The
get command can eat huge memory in output buffer and bandwidth to
network.
This PR introduces a new command `COMMANDLOG`, to log commands that
consume significant network bandwidth, including both input and output.
Users can retrieve the results using `COMMANDLOG get <count>
large-request` and `COMMANDLOG get <count> large-reply`, all subcommands
for `COMMANDLOG` are:
* `COMMANDLOG HELP`
* `COMMANDLOG GET <count> <slow|large-request|large-reply>`
* `COMMANDLOG LEN <slow|large-request|large-reply>`
* `COMMANDLOG RESET <slow|large-request|large-reply>`
And the slowlog is also incorporated into the commandlog.
For each of these three types, additional configs have been added for
control:
* `commandlog-request-larger-than` and
`commandlog-large-request-max-len` represent the threshold for large
requests(the unit is Bytes) and the maximum number of commands that can
be recorded.
* `commandlog-reply-larger-than` and `commandlog-large-reply-max-len`
represent the threshold for large replies(the unit is Bytes) and the
maximum number of commands that can be recorded.
* `commandlog-execution-slower-than` and
`commandlog-slow-execution-max-len` represent the threshold for slow
executions(the unit is microseconds) and the maximum number of commands
that can be recorded.
* Additionally, `slowlog-log-slower-than` and `slowlog-max-len` are now
set as aliases for these two new configs.
---------
Signed-off-by: zhaozhao.zz <zhaozhao.zz@alibaba-inc.com>
Co-authored-by: Madelyn Olson <madelyneolson@gmail.com>
Co-authored-by: Ping Xie <pingxie@outlook.com>
This PR builds upon the [previous entry prefetching
optimization](https://github.com/valkey-io/valkey/pull/1501) to further
enhance performance by implementing value prefetching for hashtable
iterators.
## Implementation
Modified `hashtableInitIterator` to accept a new flags parameter,
allowing control over iterator behavior.
Implemented conditional value prefetching within `hashtableNext` based
on the new `HASHTABLE_ITER_PREFETCH_VALUES` flag.
When the flag is set, hashtableNext now calls `prefetchBucketValues` at
the start of each new bucket, preemptively loading the values of filled
entries into the CPU cache.
The actual prefetching of values is performed using type-specific
callback functions implemented in `server.c`:
- For `robj` the `hashtableObjectPrefetchValue` callback is used to
prefetch the value if not embeded.
This implementation is specifically focused on main database iterations
at this stage. Applying it to hashtables that hold other object types
should not be problematic, but its performance benefits for those cases
will need to be proven through testing and benchmarking.
## Performance
### Setup:
- 64cores Graviton 3 Amazon EC2 instance.
- 50 mil keys with different value sizes.
- Running valkey server over RAM file system.
- crc checksum and comperssion off.
### Action
- save command.
### Results
The results regarding the duration of “save” command was taken from
“info all” command.
```
+--------------------+------------------+------------------+
| Prefetching | Value size (byte)| Time (seconds) |
+--------------------+------------------+------------------+
| No | 100 | 20.112279 |
| Yes | 100 | 12.758519 |
| No | 40 | 16.945366 |
| Yes | 40 | 10.902022 |
| No | 20 | 9.817000 |
| Yes | 20 | 9.626821 |
| No | 10 | 9.71510 |
| Yes | 10 | 9.510565 |
+--------------------+------------------+------------------+
```
The results largely align with our expectations, showing significant
improvements for larger values (100 bytes and 40 bytes) that are stored
outside the robj. For smaller values (20 bytes and 10 bytes) that are
embedded within the robj, we see almost no improvement, which is as
expected.
However, the small improvement observed even for these embedded values
is somewhat surprising. Given that we are not actively prefetching these
embedded values, this minor performance gain was not anticipated.
perf record on save command **without** value prefetching:
```
--99.98%--rdbSaveDb
|
|--91.38%--rdbSaveKeyValuePair
| |
| |--42.72%--rdbSaveRawString
| | |
| | |--26.69%--rdbWriteRaw
| | | |
| | | --25.75%--rioFileWrite.lto_priv.0
| | |
| | --15.41%--rdbSaveLen
| | |
| | |--7.58%--rdbWriteRaw
| | | |
| | | --7.08%--rioFileWrite.lto_priv.0
| | | |
| | | --6.54%--_IO_fwrite
| | |
| | |
| | --7.42%--rdbWriteRaw.constprop.1
| | |
| | --7.18%--rioFileWrite.lto_priv.0
| | |
| | --6.73%--_IO_fwrite
| |
| |
| |--40.44%--rdbSaveStringObject
| |
| --7.62%--rdbSaveObjectType
| |
| --7.39%--rdbWriteRaw.constprop.1
| |
| --7.04%--rioFileWrite.lto_priv.0
| |
| --6.59%--_IO_fwrite
|
|
--7.33%--hashtableNext.constprop.1
|
--6.28%--prefetchNextBucketEntries.lto_priv.0
```
perf record on save command **with** value prefetching:
```
rdbSaveRio
|
--99.93%--rdbSaveDb
|
|--79.81%--rdbSaveKeyValuePair
| |
| |--66.79%--rdbSaveRawString
| | |
| | |--42.31%--rdbWriteRaw
| | | |
| | | --40.74%--rioFileWrite.lto_priv.0
| | |
| | --23.37%--rdbSaveLen
| | |
| | |--11.78%--rdbWriteRaw
| | | |
| | | --11.03%--rioFileWrite.lto_priv.0
| | | |
| | | --10.30%--_IO_fwrite
| | | |
| | |
| | --10.98%--rdbWriteRaw.constprop.1
| | |
| | --10.44%--rioFileWrite.lto_priv.0
| | |
| | --9.74%--_IO_fwrite
| | |
| |
| |--11.33%--rdbSaveObjectType
| | |
| | --10.96%--rdbWriteRaw.constprop.1
| | |
| | --10.51%--rioFileWrite.lto_priv.0
| | |
| | --9.75%--_IO_fwrite
| | |
| |
| --0.77%--rdbSaveStringObject
|
--18.39%--hashtableNext
|
|--10.04%--hashtableObjectPrefetchValue
|
--6.06%--prefetchNextBucketEntries
```
Conclusions:
The prefetching strategy appears to be working as intended, shifting the
performance bottleneck from data access to I/O operations.
The significant reduction in rdbSaveStringObject time suggests that
string objects(which are the values) are being accessed more
efficiently.
Signed-off-by: NadavGigi <nadavgigi102@gmail.com>
This includes a way to run two versions of the server from the TCL test
framework. It's a preparation to add more cross-version tests. The
runtest script accepts a new parameter
./runtest --other-server-path path/to/valkey-server
and a new tag "needs:other-server" for test cases and start_server.
Tests with this tag are automatically skipped if `--other-server-path`
is not provided.
This PR adds it in a CI job with Valkey 7.2.7 by downloading a binary
release.
Fixes#76
---------
Signed-off-by: Viktor Söderqvist <viktor.soderqvist@est.tech>
