excessive disk read/writes in brave for Linux

[slackwareuser]

Description

excessive disk read/writes under Linux - similar issue #2563 - but that issue is closed and for windows

Steps to Reproduce

1. open brave
2. load a page
3. open just another tab and load a new page (don't need to open a lot, just another tab or two)

Actual result:

see output.txt
out.txt

Expected result:

Reproduces how often:

always reproducible when opening brave

Brave version (brave://version info)

Brave	1.38.111 Chromium: 101.0.4951.54 (Official Build) (64-bit)
Revision	67da1aeb32cedd27634ca6634fb79cbd85d3f0ab-refs/branch-heads/4951@{#1126}
OS	Linux
JavaScript	V8 10.1.124.11
User Agent	Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36
Command Line	/opt/brave.com/brave/brave --enable-crashpad --disable-client-side-phishing-detection --disable-domain-reliability --enable-dom-distiller --no-pings --component-updater=url-source=https://go-updater.brave.com/extensions --origin-trial-public-key=bYUKPJoPnCxeNvu72j4EmPuK7tr1PAC7SHh8ld9Mw3E=,fMS4mpO6buLQ/QMd+zJmxzty/VQ6B1EUZqoCU04zoRU= --sync-url=https://sync-v2.brave.com/v2 --lso-url=https://no-thanks.invalid --variations-server-url=https://variations.brave.com/seed --variations-insecure-server-url=https://variations.brave.com/seed --flag-switches-begin --flag-switches-end
Executable Path	/opt/brave.com/brave/brave
Profile Path	/home/slackuser/.config/BraveSoftware/Brave-Browser/Default
Variations	AdRewardsStudy:NextPaymentDayAdServingStudy:DefaultAdNotificationsPerHour=10/MaximumAdNotificationsPerDay=100/MaximumInlineContentAdsPerHour=12/MaximumInlineContentAdsPerDay=60AdvertiserSplitTestStudy:GroupBBraveAds.FrequencyCappingStudy:ExcludeAdIfWithinTimeWindow=0hBraveAds.UserActivityStudy:Triggers=EMPTY/Threshold=0.0/IdleTimeThreshold=5BraveDebounceStudy:EnabledConversionsStudy:NewDefaultPatternDefault1pBlockingStudy:DisabledEphemeralStorageStudy:EnabledExtendedVariationsSafeMode5:Default5FirstPartyEphemeralDomainBlockStudy:EnabledForceDisableBlinkFeatures:EnabledNativeCosmeticFilteringStudy:EnabledNavigationThreadingOptimizationsCompat:DisabledPartitionBlinkMemoryCacheStudy:EnabledPartitionConnectionsByNetworkIsolationKeyStudy:EnabledPermissionLifetimeReleaseStudy:EnabledRequestAdsEnabledApiStudy:EnabledSpeedreaderReleaseStudy:Disabled

Version/Channel Information:

• Can you reproduce this issue with the current release? yes
• Can you reproduce this issue with the beta channel? n/a
• Can you reproduce this issue with the nightly channel? n/a

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? no
• Does the issue resolve itself when disabling Brave Rewards? no
• Is the issue reproducible on the latest version of Chrome? no

Miscellaneous Information:

disabled both hw acceleration and rewards in brave, issue still persists.

[rebron]

@slackwareuser dupe of #22807. We just need one.