Red Hat Bugzilla – Bug 130224
I/O very very slow with newer kernels
Last modified: 2015-01-04 17:08:55 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040707 Firefox/0.9.2 Description of problem: First of all my hardware configuration: Athlon64 3200+ MB MSI chipset VIA Controller RAID SATA 3Ware 8506-4LP with 3 HDD SATA 160 Gbyte Maxtor Controller VIA SATA with 1 HDD SATA 250 Gbyte Maxtor Realtek Ethernet 1 Gbit 512 Mbyte RAM All HDD partitions use LVM2 and no RAID Software The Problem: In these days I tried to upgrade the kernel of my Fedora Core 2 (2.6.5-1.358), but after kernel upgrade I found a problem in I/O operation. The I/O operations with newer kernels become very very very slow in particular in write operation. Moreover sometimes during I/O operation (like copying a file) the load average grows up to 6 and more and PC become unusable. I tried to copy files bigger and smaller from one partition to another one or using HDD connected to the different controller or copying file using network (samba and ftp) but the copy time (in particular in writing operation) are 10 or 100 times (or more?!) slower than the same operation using kernel 2.6.5-1.358. I have tested these kernels and I found the same problem: kernel-2.6.6-1.435.2.3 kernel-2.6.7-1.494.2.2 kernel-2.6.7-1.517 (development) Some months ago I found the same problems with Fedore Core 2 Test release (with different kernel and different HW configuration) and I wrote a message to fedora-devel-list: http://www.redhat.com/archives/fedora-devel-list/2004-March/msg00898.html Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1.Installing newer kernel for FC2 2.Reboot with the new kernel 3. Additional info:
Fedora Core 2 has now reached end of life, and no further updates will be provided by Red Hat. The Fedora legacy project will be producing further kernel updates for security problems only. If this bug has not been fixed in the latest Fedora Core 2 update kernel, please try to reproduce it under Fedora Core 3, and reopen if necessary, changing the product version accordingly. Thank you.