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SubjectRe: [PATCH 4/5] add isolate pages vmstat
Christoph Lameter wrote:
> On Tue, 7 Jul 2009, KOSAKI Motohiro wrote:
>
>> +++ b/include/linux/mmzone.h
>> @@ -100,6 +100,8 @@ enum zone_stat_item {
>> NR_BOUNCE,
>> NR_VMSCAN_WRITE,
>> NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */
>> + NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */
>> + NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */
>
> LRU counters are rarer in use then the counters used for dirty pages etc.
>
> Could you move the counters for reclaim into a separate cacheline?

I don't get the point of that - these counters are
per-cpu anyway, so why would they need to be in a
separate cacheline?


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