What are common disk cache issues in Linux and how can I resolve them?
Common disk cache issues in Linux include cache corruption, excessive cache usage, and slow performance. To resolve them, you can clear the cache, adjust cache settings, or check for hardware issues.
How do I clear the disk cache in Linux?
You can clear the disk cache in Linux by running the command sudo sync; echo 3 > /proc/sys/vm/drop_caches
. This will free up page cache, dentries, and inodes.
Are there any risks associated with clearing the disk cache?
Yes, clearing the disk cache can temporarily slow down system performance as the cache will need to be rebuilt. It's generally safe, but should be done with caution.
What tools can I use to monitor disk cache performance?
You can use tools like iostat
, vmstat
, and htop
to monitor disk cache performance in Linux.
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