Get rid of slru.c's hardwired insistence on a fixed number of slots per
Tom Lane <tgl@sss.pgh.pa.us>
Get rid of slru.c's hardwired insistence on a fixed number of slots per SLRU area. The number of slots is still a compile-time constant (someday we might want to change that), but at least it's a different constant for each SLRU area. Increase number of subtrans buffers to 32 based on experimentation with a heavily subtrans-bashing test case, and increase number of multixact member buffers to 16, since it's obviously silly for it not to be at least twice the number of multixact offset buffers.
Files
| Path | Change | +/− |
|---|---|---|
| src/backend/access/transam/clog.c | modified | +4 −3 |
| src/backend/access/transam/multixact.c | modified | +7 −5 |
| src/backend/access/transam/slru.c | modified | +68 −24 |
| src/backend/access/transam/subtrans.c | modified | +3 −3 |
| src/backend/storage/lmgr/lwlock.c | modified | +8 −9 |
| src/include/access/clog.h | modified | +5 −1 |
| src/include/access/multixact.h | modified | +5 −1 |
| src/include/access/slru.h | modified | +14 −18 |
| src/include/access/subtrans.h | modified | +4 −1 |