Improving performance #117
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dAdAbird
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Feb 14, 2024
src/include/encryption/enc_tuple.h
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| extern void | ||
| pg_tde_crypt_simple(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context); | ||
| extern void | ||
| pg_tde_crypt_complex(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context); |
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Just a minor thing - should those be "external" (I mean to it looks like rather "private" functions)
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Originally I considered simply calling the simple function at some places, but it is safer to always call the main function and it doesn't matter that much. I'll remove these from the header.
This commit tries to improve the performance of our encryption, based on the results reported in Percona-Lab#89. It contains two main changes which results in improvents: * Our pg_tde_crypt loop has several conditions to support all possible cornercases it might encounter. These conditions are not neccessary most of the time, but slow down our throughput considerably. This commit introduces a "simple" version of the function for smaller data sizes, which only has a simple one instruction for loop. * OpenSSL supports in place encryption when certain conditions are met - which is true for our zeroblocks function. The zero block function no longer uses an additional local array, and the filling of the input data is also simplified. These changes together results in the following encryption overheads: * json testcase: 140% -> 120% * jsonb testcase: 230% -> 175% Closes Percona-Lab#89
codeforall
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Feb 28, 2024
| uint64 aes_block_no = start_offset % AES_BLOCK_SIZE; | ||
| char ivp_debug[33]; | ||
| iv_prefix_debug(iv_prefix, ivp_debug); | ||
| ereport(LOG, |
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Do we need to log this?
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It's inside an ENCRYPTION_DEBUG macro
codeforall
approved these changes
Feb 29, 2024
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This commit tries to improve the performance of our encryption, based on the results reported in #89.
It contains two main changes which results in improvents:
These changes together results in the following encryption overheads:
Closes #89