Messages in this thread | | | From | "Mr Blogs" <> | Subject | 2.6.29 CCISS Problem | Date | Wed, 15 Apr 2009 03:21:49 -0700 |
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I am using Gentoo on a HP DL380 G3. Intel Xeon (P4) 3.06ghz processors, with a HP COMPAQ CCISS ARRAY in RAID 0 mode (hardware, linux just sees one single drive)
hdparm on 2.6.27 shows the speed at ~ 130mbs
After performing an upgrade of the kernel
hdparm on 2.6.29 shows the speed at ~ 30mbs (30-50mbs varies)
I looked at the DMESG comparisons, and the only difference is that 2.6.29 mentions: "IRQF_DISABLED is not guaranteed on shared IRQs"
Now I have looked for hours to see if it was a configuration issue, but to no avail.
Yes the 2.6.27 kernel was self built, and it works fine. The 2.6.29 was built using the .config file from the 2.6.27.
I compiled this kernel on two servers, both same spec (well, one has 4GB ram other has 2GB ram), same setup - and both responded as above.
On the one, I recompiled the kernel to just use the new version (NO config changes). The other I re-compiled using config changes (removing things not relevant for the machine etc) - both end up having this problem.
I have done a "diff" compare on the configs, but there is nothing I can find that would explain this.
I know that this "IRQF_DISABLED" warning isn't present in 2.6.27 boots, and that the CISS driver works full speed in that one.
I thought it was originally that I changed the IO Scheduling, but as i said, on the one machine - all i did was copy the config file and recompile.
Do you know of anything that could be causing this?
I checked proc/interrupts on both kernel versions, and IRQ 30 is unshared (IO-APIC-FASTEOI cciss or something like that), i am just unsure what is causing the issue.
Thankyou. -- Mr Blogs mrblogs@ssl-mail.com
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