Support of cluster consistency created how much cache?
HelloI'm runing Oracle coherence GE 3.6.1 clustered.
Support of cluster consistency created how much cache? type of cache is a distributed Cache.
Cache of overcrowding affects the performance of the pole?
Thank you!
Hello
Your test is probably not very representative of a real system. Have you run this test with just a single JVM? In the real world you could run a cluster of a number of Java virtual machines.
In removeStartWith what you do is iterate over the set of keys to cache and to keep a number of keys - that is going to be fast in a single machine virtual JAVA.
In removeLike you do a query to filter on the cache and consistency builds a new set to match the keys. It's a lot more work and therefore slower.
Your two method names are called "removeXXX' althpough, you do not actually remove anything. If you want to delete the corresponding entries or your methods are very effective ways to make the operation you are trying. With a good group, average the most effective to remove all entries that are preceded by a given string would be something like this...
Filter filter = new LikeFilter(new KeyExtractor(), regex + "%", (char)0, false);
nc.invokeAll(filter, new ConditionalRemove(AlwaysFilter.INSTANCE));
In the above code, the delete operation will happen on the cluster and will be distributed across all nodes in the cluster at the same time will be faster that bringing so everything they touch back and remove them one at a time as you do.
In a true cluster works on the cluster where data is usually much more efficient and faster. If you do performance test there is no point in an environment that is not representative of a real-world deployment.
JK
Tags: Fusion Middleware
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partitions with smaller clusters and so much less waste. In
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just Windows. The thought that if you reinstall Windows, your
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partitions is simply not true. That s because all programs installed
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Windows, in the registry and elsewhere, as well as associated files
buried in the Windows folder. So if Windows, pointers and
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work. In fact, there is almost never a good reason to separate
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data on the disk. For best performance, the paging file should normally
be on the most widely used score of less used physical player. For
almost everyone with a single physical disk than the same drive s
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Some people make a separate partition to store backups of their other
or partitions. People who rely on a "backup" are a joke
themselves. It is only very slightly better than no backup at all.
because it leaves you likely to be simultaneously the original losses
and backup for many of the most common dangers: the head crashes and other
types of drive, serious glitches to power failure, near lightning
strikes, virus attack, even stolen computer. In my opinion,.
secure backup must be on a media removable and not stored in the
computer.5. a partition for data files
Above, when I discussed separate Windows on a clean partition,
I pointed out that separate data from Windows is a false comfort if
He of done with the idea that data will be safe if Windows ever
must be reinstalled. I call it a false comfort that's because
I'm afraid many people will rely on this separation, think that their
data are safe there and so do not take measures to
Back it up. In truth the data is not safe there. Having to reinstall
Windows is just one of the dangers to someone a s hard disk and not
probably even one. This kind of "backup" falls into the same
category, as a backup to other partitions partition; It lets you
sensitive to the simultaneous loss of the original and the backup on many of
the most common dangers that affect the entire physical disk, not
just the particular partition. Security comes from a solid backup
diet, not how partition you.However, for some people, it may be a good idea to separate Windows and
programs on the one hand of the data on the other, putting each of the
two types into separate partitions. I think that most people
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plans are generally of two types: whole hard disk imaging
or data only backup. If you back up data, backup is
usually facilitated by the presence of a separate with data only partition;
to save just the score easily, without having to
collect pieces from here and elsewhere. However, for
those who backup by creating an image of the entire disk, there is
usually little, if any, benefit the separation of data in a partition of
its own.Furthermore, in all honesty, I must point out that there are many
very respected people who recommend a separate partition for Windows,
Whatever your backup plan. Their arguments haven t convinced
me, but there are clearly two views different here.6. a partition to image files
Some people like to deal with the images and videos as something separate
other data files and create a separate partition for them. To my
the spirit, an image is simply another type of data and there is no
the advantage in doing so.7. a partition for music files.
The comments above related to the image files also apply to music
files. They are just another type of data and must be dealt with the
just like the other data.8. a partition for a second operating system to dual-boot to.
For those who manage several operating systems (Windows Vista, Windows
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system is essential. The problems here are beyond the scope of this
discussion, but simply to note that I have no objection to s
all these partitionsPerformance
Some people have several partitions because they believe that it
somehow improves performance. That s not correct. The effect is
probably low on modern computers with modern hard disks, but if
whatever it is, the opposite is true: more music mean poorer
performance. That's because normally no partition is full and it
so are gaps between them. It takes time for the drive s
read/write heads to cross these gaps. Close all files
are, faster access to them will be.Organization
I think a lot of people overpartition because they use scores as a
organizational structure. They have a keen sense of order and you want to
to separate the apples from the oranges on their readers.Yes, separating the different types of files on partitions is a
technical organization, but then is to separate different types of
files in folders. The difference is that the walls are static and
fixed in size, while the files are dynamic, changing size automatically
as needed to meet your changing needs. This usually done records
a much better way to organize, in my opinion.Certainly, partitions can be resized when necessary, but except with the latter
versions of Windows, which requires a third-party software (the and the
possibility to do so in Windows is primitive compared to the third-party
solutions). These third party software normally costs money and not
any point and how stable it is, affects the entire disk.
with the risk of losing everything. Plan your partitions in
first place and repartitioning, none will be necessary. The need
to repartition usually occurs as a result of overpartitioning in
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records are that they make a miscalculation of how much room they need on each
This partition, and then when they run out of space on the partition
When a file is logically, while having plenty of space
on the other hand, they simply saving the file in the score of "poor".
Paradoxically, therefore, results in this kind of score structure
less organization rather than more.So how should I partition my drive
If you read what came before, my findings will not come as a
surprise:1. If your backup set is the image of the entire disk, have just one
single (usually c partition :));2. If you backups just data, have two partitions one for Windows and
application programs installed (usually c :)), the other for data
(normally D :).)With the exception of multiple operating systems, it is rarely
any advantage to have more than two partitions. -
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