Linux Kernel Tuning - GlusterDocumentation
Linux kernel tuning for GlusterFS Every now and then, questions come up here internally and with many enthusiasts on what Gluster has to say about kernel tuning, if anything. The rarity of kernel tuning is on account of the Linux kernel doing a pretty good job on most workloads. But there is a flip side to this design. The Linux kernel historically has eagerly eaten up a lot of RAM, provided ther
/proc and /sys tricks
Really the sysfs and /proc filesystems are worlds of magic and fantasy. Each day I discover a new trick using this filesystems. So, I decided to post a short summary of my favorites ones. Enjoy and feel free to add your tricks in comments, maybe we can a /proc and /sys knownledge database in a post 🙂 1. Scanning for LUNs in attached FC (or any other SCSI compliance host). echo "- - -" > /sys/clas
Alice and Bob in I/O Land
Table of contents Originally written by guy keren TOC --> Alice, Bob And Their Race To Disk-Haven Alice is a file-system write request. Bob is a raw-device write request. They both want to get to the haven of the disk drive - and fast... ...and yet not too fast - not if their friends are coming soon! Let us follow their journey through Linux's file systems... ...page caches, block devices, elevato
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404 - Network Nuts
Support - Question: Performance tuning on the LSI MegaRAID LSI SAS 2108 and LSI SAS 2208 based RAID controllers.
https://www.monperrus.net/martin/scheduler+queue+size+and+resilience+to+heavy+IO
