The system becames really slow during the data copy using network, but i copy data between 2 pools of the box i don't notice that issue, so probably i may be hitting some sort of interrupt conflit in the network cards...This system is configured with *alot *of interfaces, being :
4 internal broadcom gigabit 1 PCIe 4x, Intel Dual Pro gigabit 1 PCIe 4x, Intel 10gbE card 2 PCIe 8x Sun non-raid HBA With all of this, is there any way to check if there is indeed an interrupt conflit or some other type of conflit that leads this high load? I also noticed some messages about acpi..can this acpi also affect the performance of the system? Regards, Bruno On 23-2-2010 20:47, Bob Friesenhahn wrote: > On Tue, 23 Feb 2010, Bruno Sousa wrote: > >> I don't have compression and deduplication enabled, but checksums are. >> However disabling checksums gives a 0.5 load reduction only... > > Since high CPU consumption is unusual, I would suspect a device driver > issue. Perhaps there is an interrupt conflict such that two devices > are using the same interrupt. > > On my own system (12 disks), I can run a throughput benchmark and the > system remains completely usable as an interactive desktop system, > without any large use of CPU or high load factor. The bandwidth > bottleneck in my case is the PCIe (4 lane) fiber channel card and its > duplex connection to the storage array. > > Bob > -- > Bob Friesenhahn > bfrie...@simple.dallas.tx.us, > http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ >
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