Disk Writeback and Sync Monitor

Disk Writeback and Sync Monitor is a desktop page-cache telemetry viewer and
kernel filesystem buffer sync utility for Linux workstations and removable
storage workflows. An independent Linux alternative to command-line disk flush
tools such as Sync, sync(1), and vmstat, it monitors live kernel dirty buffers
and executes measured os.sync() and targeted os.fsync() flushes.

Key Features:
- Live Page Cache & Writeback Telemetry: Reads /proc/meminfo (Dirty, Writeback,
WritebackTmp, Cached, Buffers, Active(file), Inactive(file), SReclaimable) and
/proc/vmstat (nrdirty, nrwriteback, nrwritten, pgpgin, pgpgout) in real time.
- Measured Kernel Sync & Targeted fsync: Triggers system-wide os.sync() or
directory/file os.fsync() operations while recording exact flush latency (ms)
and pre/post Dirty KB deltas in an execution log.
- Kernel VM Writeback Policy Inspector: Displays live /proc/sys/vm thresholds
including dirtyratio, dirtybackgroundratio, dirtyexpirecentisecs, and
dirtywritebackcentisecs alongside mounted filesystem capacity stats.
- Time-Series Charts & Reports: Plots live Dirty/Writeback KB history and page
cache composition charts and exports telemetry and sync logs to CSV and JSON.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by Microsoft Corporation.