Messages in this thread | | | From | Florian Fainelli <> | Date | Tue, 3 Dec 2013 18:30:28 -0800 | Subject | high kswapd CPU usage when executing binaries from NFS w/ CMA and COMPACTION |
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Hi all,
I am experiencing high kswapd CPU usage on an ARMv7 system running 3.8.13 when executing relatively large binaries from NFS. When this happens kswapd consumes around 55-60% CPU usage and the applications takes a huge time to load.
My system has both CONFIG_CMA and CONFIG_COMPACTION enabled and turning off CONFIG_COMPACTION does seem to make things slightly better since kswapd does not take much CPU usage if at all and the application loads with its expected loading time.
Attached are the contents of /proc/zoneinfo, vmstat and meminfo when the system works correctly and their counterparts when the system is busy in kswapd.
Any pointers to patches I should eventually backport or try would be much appreciated!
Thanks! -- Florian [unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream] | |