search for: seekwatch

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2009 Dec 04
2
measuring iops on linux - numbers make sense?
Hello, When approaching hosting providers for services, the first question many of them asked us was about the amount of IOPS the disk system should support. While we stress-tested our service, we recorded between 4000 and 6000 "merged io operations per second" as seen in "iostat -x" and collectd (varies between the different components of the system, we have a few such
2008 Aug 05
31
Btrfs v0.16 released
Hello everyone, Btrfs v0.16 is available for download, please see http://btrfs.wiki.kernel.org/ for download links and project information. v0.16 has a shiny new disk format, and is not compatible with filesystems created by older Btrfs releases. But, it should be the fastest Btrfs yet, with a wide variety of scalability fixes and new features. There were quite a few contributors this time
2010 Jan 20
3
Slow fsck on adaptec SAS/SATA raid
I'm trying to do an fsck on an ext3 partition but I'm seeing abysmally slow disk throughput; monitoring with "dstat" (like vmstat) shows ~1200-1500KB/s throughput to the disks. Even with 24hrs of fsck-ing I only get ~3% (still in pass1). The filesystem is ext3 running "e2fsck -C0 /dev/sda3" and about 3.7TB on an x86_64-based system with 4GB RAM. e2fsprogs is 1.41.9.