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Measure size and way-order of L1 and L2 caches


Measure size and way-order of L1 and L2 caches

By : user3862010
Date : November 21 2020, 07:01 PM
wish of those help I think all you need to do is repeatedly access memory in ever-increasing chunks (to determine cache size), and I think you can vary the strides to determine associativity.
So you would start out trying to access very short segments of memory and keep doubling the size until access slows down. Every time access slows down you've determined the size of another level of cache.
code :


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Line size of L1 and L2 caches

Line size of L1 and L2 caches


By : Julio
Date : March 29 2020, 07:55 AM
Any of those help In core i7 the line sizes in L1 , L2 and L3 are the same: that is 64 Bytes. I guess this simplifies maintaining the inclusive property, and coherence.
See page 10 of: https://www.aristeia.com/TalkNotes/ACCU2011_CPUCaches.pdf
How Can I Get Ehcache To Keep Heap Size Bytes Statistics For Unbounded Caches?

How Can I Get Ehcache To Keep Heap Size Bytes Statistics For Unbounded Caches?


By : Anouk L.
Date : March 29 2020, 07:55 AM
I wish this help you I'm beginning to think what I'm asking for isn't possible with Ehcache (at least the version I'm on)
Here is the pool config in the source for net.sf.ehcache.Cache.class:
code :
// on-heap pool configuration
Pool onHeapPool;
if (configuration.getMaxBytesLocalHeap() > 0) {
    PoolEvictor evictor = new FromLargestCachePoolEvictor();
    SizeOfEngine sizeOfEngine = cacheManager.createSizeOfEngine(this);
    onHeapPool = new BoundedPool(configuration.getMaxBytesLocalHeap(), evictor, sizeOfEngine);
} else if (getCacheManager() != null && getCacheManager().getConfiguration().isMaxBytesLocalHeapSet()) {
    onHeapPool = getCacheManager().getOnHeapPool();
} else {
    onHeapPool = new UnboundedPool();
}
if (pool instanceof UnboundedPool) {
    this.poolAccessor = pool.createPoolAccessor(null, null);
} else {
    this.poolAccessor = pool.createPoolAccessor(new Participant(),
        SizeOfPolicyConfiguration.resolveMaxDepth(cache),
        SizeOfPolicyConfiguration.resolveBehavior(cache).equals(SizeOfPolicyConfiguration.MaxDepthExceededBehavior.ABORT));
}
<cache name="myCache"
    timeToIdleSeconds="1800"
    memoryStoreEvictionPolicy="LRU"
    overflowToDisk="false"
    overflowToOffHeap="false"
    maxBytesLocalHeap="1">
    <pinning store="inCache" />
</cache>
Size of neighbouring data a modern computer caches for locality favour

Size of neighbouring data a modern computer caches for locality favour


By : user2684210
Date : March 29 2020, 07:55 AM
With these it helps First of all I doubt that "The cache-line of my computer is 64K bytes". It's most likely to be 64 Bytes only. Let me try to answer your questions:
Question 1. For my case, is there a lot of cache misses due to my access pattern is random?
How multilevel CPU caches having the same cache line size work?

How multilevel CPU caches having the same cache line size work?


By : darionhui
Date : March 29 2020, 07:55 AM
help you fix your problem
I've read in a book, that for multilevel CPU caches, cache line size increases as per level's total memory size.
Measure the size of data and instruction caches of an executable file

Measure the size of data and instruction caches of an executable file


By : vonZinzer
Date : March 29 2020, 07:55 AM
wish of those help Is there a way to measure the following aspects when running an executable file (after compiling a c, c++ .... code) -Size of the used data and instruction caches in (KB), or as a percentage -Percentage of CPUs use , Use following command to get the size of executable.
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