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Code Issues Actions 2 Packages Projects Releases Wiki Activity

add shm frame lifetime calculation and update UI for shared memory metrics

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This commit is contained in:
Josh Hawkins 2026-03-12 14:28:32 -05:00
parent 947ddfa542
commit db192823ce
3 changed files with 96 additions and 37 deletions
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6
web/public/locales/en/views/system.json
View File

@ -135,7 +135,11 @@
},
"shm": {
"title": "SHM (shared memory) allocation",
"warning": "The current SHM size of {{total}}MB is too small. Increase it to at least {{min_shm}}MB."
"warning": "The current SHM size of {{total}}MB is too small. Increase it to at least {{min_shm}}MB.",
"frameLifetime": {
"title": "Frame lifetime",
"description": "Each camera has {{frames}} frame slots in shared memory. At the fastest camera's frame rate, each frame is available for approximately {{lifetime}}s before being overwritten."
}
},
"cameraStorage": {
"title": "Camera Storage",

1
web/src/types/stats.ts
View File

@ -86,6 +86,7 @@ export type StorageStats = {
used: number;
mount_type: string;
min_shm?: number;
shm_frame_count?: number;
};
export type PotentialProblem = {

126
web/src/views/system/StorageMetrics.tsx
View File

@ -89,6 +89,35 @@ export default function StorageMetrics({
timezone,
);
const shmFrameLifetime = useMemo(() => {
if (!stats || !config) {
return undefined;
}
const shmFrameCount = stats.service.storage["/dev/shm"]?.shm_frame_count;
if (!shmFrameCount || shmFrameCount <= 0) {
return undefined;
}
let maxCameraFps = 0;
for (const [name, camStats] of Object.entries(stats.cameras)) {
if (config.cameras[name]?.enabled && camStats.camera_fps > 0) {
maxCameraFps = Math.max(maxCameraFps, camStats.camera_fps);
}
}
if (maxCameraFps === 0) {
return undefined;
}
return {
frames: shmFrameCount,
lifetime: Math.round((shmFrameCount / maxCameraFps) * 10) / 10,
};
}, [stats, config]);
if (!cameraStorage || !stats || !totalStorage || !config) {
return;
}
@ -148,43 +177,68 @@ export default function StorageMetrics({
<div className="flex-col rounded-lg bg-background_alt p-2.5 md:rounded-2xl">
<div className="mb-5 flex flex-row items-center justify-between">
/dev/shm
{stats.service.storage["/dev/shm"]["total"] <
(stats.service.storage["/dev/shm"]["min_shm"] ?? 0) && (
<Popover>
<PopoverTrigger asChild>
<button
className="focus:outline-none"
aria-label={t("storage.shm.title")}
>
<FaExclamationTriangle
className="size-5 text-danger"
aria-label={t("storage.shm.title")}
/>
</button>
</PopoverTrigger>
<PopoverContent className="w-80">
<div className="space-y-2">
{t("storage.shm.warning", {
total: stats.service.storage["/dev/shm"]["total"],
min_shm: stats.service.storage["/dev/shm"]["min_shm"],
})}
<div className="mt-2 flex items-center text-primary">
<Link
to={getLocaleDocUrl(
"frigate/installation#calculating-required-shm-size",
)}
target="_blank"
rel="noopener noreferrer"
className="inline"
>
{t("readTheDocumentation", { ns: "common" })}
<LuExternalLink className="ml-2 inline-flex size-3" />
</Link>
<div className="flex flex-row items-center gap-2">
{shmFrameLifetime && (
<Popover>
<PopoverTrigger asChild>
<button
className="focus:outline-none"
aria-label={t("storage.shm.frameLifetime.title")}
>
<CiCircleAlert
className="size-5"
aria-label={t("storage.shm.frameLifetime.title")}
/>
</button>
</PopoverTrigger>
<PopoverContent className="w-80">
<div className="space-y-2">
{t("storage.shm.frameLifetime.description", {
frames: shmFrameLifetime.frames,
lifetime: shmFrameLifetime.lifetime,
})}
</div>
</div>
</PopoverContent>
</Popover>
)}
</PopoverContent>
</Popover>
)}
{stats.service.storage["/dev/shm"]["total"] <
(stats.service.storage["/dev/shm"]["min_shm"] ?? 0) && (
<Popover>
<PopoverTrigger asChild>
<button
className="focus:outline-none"
aria-label={t("storage.shm.title")}
>
<FaExclamationTriangle
className="size-5 text-danger"
aria-label={t("storage.shm.title")}
/>
</button>
</PopoverTrigger>
<PopoverContent className="w-80">
<div className="space-y-2">
{t("storage.shm.warning", {
total: stats.service.storage["/dev/shm"]["total"],
min_shm: stats.service.storage["/dev/shm"]["min_shm"],
})}
<div className="mt-2 flex items-center text-primary">
<Link
to={getLocaleDocUrl(
"frigate/installation#calculating-required-shm-size",
)}
target="_blank"
rel="noopener noreferrer"
className="inline"
>
{t("readTheDocumentation", { ns: "common" })}
<LuExternalLink className="ml-2 inline-flex size-3" />
</Link>
</div>
</div>
</PopoverContent>
</Popover>
)}
</div>
</div>
<StorageGraph
graphId="general-shared-memory"