文件系统与Postgres的图像 [英] Filesystem vs. Postgres for images
问题描述
您好，
我在网络门户网站上工作。有一些广告。我们有大约20万
的广告。每个广告都有自己的名为ID的目录，其中有5个子目录
，各种大小的5张图片。
文件系统太慢了。但是我不知道，如果我将这些图像存储到后期，那么性能会越来越高。
第二个问题是，我需要什么样的硬件用于存储在DB中。现在
我有Intel（R）Pentium（R）4 CPU 1.70GHz，512MB RAM和120GB HDD。
thanx for advice ...
味噌
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提示7：别忘了增加你的免费空间地图设置
Hello,
I am working on web portal. There are some ads. We have about 200 000
ads. Every ad have own directory called ID, where is 5 subdirectories
with various sizes of 5 images.
Filesystem is too slow. But I don''t know, if I store these images into
postgres, performace will grow.
Second question is, what kind of hardware I need for storing in DB. Now
I have Intel(R) Pentium(R) 4 CPU 1.70GHz with 512MB RAM and 120GB HDD.
thanx for advices...
miso
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推荐答案
你好，
文件系统太慢了。但我不知道，如果我将这些图像存储到后期，性能将会增长。
但postres还将其数据存储在文件系统上。
可能需要更好的FS，比如XFS（xfs非常好并且表现良好），
imho其他文件系统如reiser有一些版本问题;）
因此将图像存储在postres中作为blob imho并不像XFS那么快，但
也许你必须做一些性能测试。
也许你可以用路径和
文件名存储图像的索引表 - 如果没有到目前为止，这应该加快你的速度文件搜索。
也有很多内存，至少1Gb这样一个大门户，而scsi
是个好主意，如果你想提升它采用带有
scsi-raid和大量内存的双proz系统 - 并且还要花很多钱:(（
另一个提示是激活代理或httpd-cache和压缩或其他
缓存php，java等内容。
抱歉我的英语不好。
volker
Michal Hlavac写道：
你好，
我在网络门户网站上工作。有一些广告。我们有大约20万个广告。每个广告都有自己的名为ID的目录，其中有5个子目录
，各种大小的5个图像。
文件系统太慢了。但我不知道，如果我将这些图像存储到postgres中，性能会增长。
第二个问题是，我需要什么样的硬件才能存储在DB中。现在
我有Intel（R）Pentium（R）4 CPU 1.70GHz，512MB RAM和120GB HDD。
建议......
味噌<
---------------------------（广播结束）----------- ----------------
提示7：别忘了增加免费空间地图设置
Filesystem is too slow. But I don''t know, if I store these images into
postgres, performace will grow.
but postres also stores its data on the filesystem.
maybe take a better FS like XFS (xfs is very nice and performes good),
imho other filesystems like reiser have some version-problems ;)
so storing images in postres as blob imho is not as fast as XFS, but
maybe you have to do some performance tests.
maybe you can store an index table for your images with path and
filenames - if did not so far, this should speed up your file-search.
also having a lot of ram, at least 1Gb for such a big portal, and scsi
is a good idea, if you want to boost it up, take a dual proz system with
scsi-raid and a lot of ram - and costs a lot of money also :((.
another tip is to activate proxy or httpd-cache and compression or other
caching stuff in php, java etc.
sorry for my broken english.
volker
Michal Hlavac wrote:
Hello,
I am working on web portal. There are some ads. We have about 200 000
ads. Every ad have own directory called ID, where is 5 subdirectories
with various sizes of 5 images.
Filesystem is too slow. But I don''t know, if I store these images into
postgres, performace will grow.
Second question is, what kind of hardware I need for storing in DB. Now
I have Intel(R) Pentium(R) 4 CPU 1.70GHz with 512MB RAM and 120GB HDD.
thanx for advices...
miso
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Hi,
imho其他文件系统如reiser有一些版本问题;）
imho other filesystems like reiser have some version-problems ;)
哦，请。 Reiser和postgres一样不稳定 - 换句话说，两者都必须遭受偏见，而这种偏见曾经是真实的。 ;-)
如果是大型目录，ext2 / 3表现极差（如原版
帖子）那么这个家伙会更好但是ext2 / 3。这就是为什么我将b $ b从ext2切换到2年前的reiser（之后没有任何问题）。
Mit freundlichem Gru？ /亲切的问候
Holger Klawitter
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列出< at> klawitter< dot> de $ / $
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Oh please. Reiser is as unstable as postgres is slow - in other words, both
have to suffer prejudice which used to be true loooong ago. ;-)
In cases of large directories ext2/3 perform extremely bad (as in the original
post) So this guy will be better off with anything but ext2/3. That''s why I
switched from ext2 to reiser ~2 years ago (without any problems since).
Mit freundlichem Gru? / With kind regards
Holger Klawitter
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lists <at> klawitter <dot> de
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On Tue，2004-04-13 at 01:44，Michal Hlavac写道：
On Tue, 2004-04-13 at 01:44, Michal Hlavac wrote:
你好，
我在网络门户网站上工作。有一些广告。我们有大约20万个广告。每个广告都有自己的名为ID的目录，其中有5个子目录
，各种大小的5个图像。
文件系统太慢了。但我不知道，如果我将这些图像存储到postgres中，性能将会增长。
Hello,
I am working on web portal. There are some ads. We have about 200 000
ads. Every ad have own directory called ID, where is 5 subdirectories
with various sizes of 5 images.
Filesystem is too slow. But I don''t know, if I store these images into
postgres, performace will grow.
考虑打破你的目录，即：
/ ads /（ID％1000）/ ID
我将它用于拥有数百万张图像的系统，效果很好。我确实不认为把它们放在数据库中就可以做任何事情
对你有利。 :)
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Consider breaking your directories up, i.e.:
/ads/(ID % 1000)/ID
I use that for a system with several million images, works great. I
really don''t think putting them in the database will do anything
positive for you. :)
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