Details
-
Bug
-
Status: Closed (View Workflow)
-
Major
-
Resolution: Fixed
-
10.5, 10.6, 10.2(EOL), 10.3(EOL), 10.4(EOL)
Description
With the following patch:
diff --git a/mysql-test/suite/mariabackup/xb_compressed_encrypted.opt b/mysql-test/suite/mariabackup/xb_compressed_encrypted.opt
|
index 8baef973470..265ee9fe2e0 100644
|
--- a/mysql-test/suite/mariabackup/xb_compressed_encrypted.opt
|
+++ b/mysql-test/suite/mariabackup/xb_compressed_encrypted.opt
|
@@ -1,5 +1,5 @@
|
--innodb-encryption-rotate-key-age=2
|
---innodb-encryption-threads=4
|
+--innodb-encryption-threads=200
|
--innodb-tablespaces-encryption
|
--plugin-load-add=$FILE_KEY_MANAGEMENT_SO
|
--loose-file-key-management |
and with the invocation
./mtr --start mariabackup.xb_compressed_encrypted
|
I see high CPU usage on GNU/Linux on the 10.5 server. On the 10.6 server with MDEV-21452 fixed, the CPU usage is more moderate on GNU/Linux, but there is a huge amount of system calls. On Microsoft Windows, the changed system call pattern make the test run much slower, causing timeouts. This was successfully worked around by setting innodb_encryption_threads=1.
The anomaly is caused by the fact that fil_crypt_return_iops() is waking up all fil_crypt_thread even though innodb_encryption_rotate_key_age=0 and there is no work to do.
Unfortunately, for other settings than --innodb-encryption-rotate-key-age=0 a proper fix of this would require implementing a check whether the encryption plugin supports key versioning.
Attachments
Issue Links
- relates to
-
-
- Closed
-
-
-
- Closed
-
-
-
- Closed
-
-
-
- Closed
-