Mischa Sandberg <mischa@xxxxxxxxxxxxx> writes: > Tom Lane wrote: >> Does Solaris have any call that allows locking a shmem segment in RAM? > Yes, mlock(). But want to understand what's going on before patching. Sure, but testing it with mlock() might help you understand what's going on, by eliminating one variable: we don't really know if the shmem is getting swapped, or something else. > For a dedicated DB server machine, Solaris has a feature: > create "intimate" shared memory with shmat(..., SHM_SHARE_MMU). > All backends share the same TLB entries (!). We use that already. (Hmm, might be interesting for you to turn it *off* and see if anything changes. See src/backend/port/sysv_shmem.c.) regards, tom lane
