similar to: NCQ

Hi All, Newbie here! I was wondering if anyone has succeeded in getting NCQ enabled with the ServerWorks chipset in the 2.6.18 kernel. I am running a Dell 1435/CentOS 5.0-x86_64 with dual 250GB Western Digital NCQ supported drives, when I load up the OS I get these messages: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata1.00: ATA-7, max UDMA/133, 488281250 sectors: LBA48

Does SATA Native Command Queueing and Linux software RAID1 play well together or is it better to turn off NCQ when doing software RAID?

Hi all, I'm sure this eventually will be resolved with a BIOS or kernel update, but in case someone experiences this on this or a similar motherboard, I thought I'd post a problem-and-workaround report. Platform CentOS5, x86_64 kernel-2.6.18-53.1.21.el5 Motherboard Asus M3a78-EMH HDMI SATA-controller configured as AHCI Experienced symptom; Periodic, ~20s lockups/freezes, several a

All, I have a problem with a new Seagate hard disk. The problem occurs when i go to install CentOS, i insert the cd and start the boot up process, when it gets to the section where it detects the hard disks, the driver is seems crashes, the message it produces complains about no one caring about a interrupt on IRQ11. The hard disk is a Seagate 200GB 8MB SATA150 NCQ drive, on a SilliconImage

I''ve been looking into the performance impact of NCQ. Here''s what i found out: http://blogs.sun.com/erickustarz/entry/ncq_performance_analysis Curiously, there''s not too much performance data on NCQ available via a google search ... enjoy, eric

I must be reading the help file for gc() wrong. I thought it said that gc(verbose=FALSE) will run the garbage collection without printing the Ncells/Vcells summary. However, this is what I get: gc(verbose = FALSE) used (Mb) gc trigger (Mb) max used (Mb) Ncells 267097 14.3 531268 28.4 531268 28.4 Vcells 429302 3.3 20829406 159.0 55923977 426.7 I'm embedding this in an

Solaris 10 5/08 Customer migrated to a new emc array with a snap shot and did a send and receive. He is now trying to set quotas on the zfs file system and getting the following error. [root at osprey /] # zfs set quota=800g target/u05 cannot set property for ''target/u05'': size is less than current used or reserved space [root at osprey /] # zfs list -o

Paul, > While testing iscsi targets exported from thumpers via 10GbE and > imported 10GbE on T2000s I am not seeing the throughput I expect, > and more importantly there is a tremendous amount of read IO > happending on a purely sequential write workload. (Note all systems > have Sun 10GbE cards and are running Nevada b65.) The read IO activity you are seeing is a direct

Hi, I?ve been having a lot of trouble extending the schema on our DC. After a few failed attempts and a few hours of researching the issue, I decided to seek help here. For context, I am trying to extend the schema to add a custom attribute to the Person class that would contain an IMAP login name. It didn?t seem reasonable to use any of the existing attributes of this class for this purpose

Gluster-user folks, I'm trying to use gluster in a way that may be a considered an unusual use case for gluster. Feel free to let me know if you think what I'm doing is dumb. It just feels very comfortable doing this with gluster. I have been using gluster in other, more orthodox configurations, for several years. I have a single system with 45 inexpensive sata drives - it's a

We''re running a Cyrus IMAP server on a T2000 under Solaris 10 with about 1 TB of mailboxes on ZFS filesystems. Recently, when under load, we''ve had incidents where IMAP operations became very slow. The general symptoms are that the number of imapd, pop3d, and lmtpd processes increases, the CPU load average increases, but the ZFS I/O bandwidth decreases. At the same time, ZFS