* feat: adjustable RAM and VRAM caps for the container
Performance > Memory gets two sliders:
- RAM cap (soft, Steam sessions): when the session is resident above the
cap, the session watcher compresses the Steam client into zRAM, waits for
its page-out acknowledgment, then compresses the rest of the session
(processes that loaded libblsession) if still over. Nothing is closed.
Measured at most every 30 s; the client is read back once usage drops
below the cap. Invalid values leave the cap off. Needs zRAM swap.
- VRAM cap: sets dxgi.maxDeviceMemory ahead of the game's own DXVK_CONFIG,
so Direct3D games budget for less video memory. A game profile still
wins. Applies from the next session.
* fix: back off the RAM cap when paging out cannot get under it
A cap below the game's working set was never met, so the watcher paged out
the client and the whole session every 30 s for the rest of the session.
Usage is still measured every 30 s, but after a page-out that leaves the
session over the cap the next one waits twice as long (60 s up to 10 min),
resetting once usage is under the cap. The client step is skipped while the
client is already under 512 MB resident.
* fix: RAM cap covers desktop Steam, signals each group once, no idle churn
- Steam opened from the desktop runs the same session watcher, so the cap
is exported whenever the Steam client runs, not only in Steam mode.
- The second page-out goes to the rest of the session only; Steam was
signalled again even when its own step had been skipped as already small.
- A cap page-out while no game runs stays paged out. Reading the client back
right away pushed it over the cap again and repeated every minute; only a
game closing while over the cap still defers a read-back.
* fix: RAM cap marks the client packed only when it compressed it
When the cap skipped the client as already small during a game, it still
recorded the client as packed, so the regular in-game client page-out
waited up to 300 s for a page-out that never happened.
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Co-authored-by: jazzyjames <182448902+jazzyjamesgames@users.noreply.github.com>
