On Wed 24-06-15 10:27:36, Vlastimil Babka wrote: > [add some CC's] > > On 06/19/2015 05:16 PM, Mark Hills wrote: [...] > > The system is an HP xw6600, running i686 kernel. This happens whether
How many CPUs does the machine have? > > internal SATA HDD, SSD or external USB drive is used. I first saw this on > > kernel 4.0.4, and 4.0.5 is also affected. OK so this is 32b kernel which might be the most important part. What is the value of /proc/sys/vm/highmem_is_dirtyable? Also how does your low mem vs higmem look when you are setting the ratio (cat /proc/zoneinfo)? It seems Vlastimil is right and a bogus ratelimit_pages is calculated and your writers are throttled every few pages. -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
