Oren Eini

aka Ayende Rahien

Oren Eini

CEO of RavenDB

a NoSQL Open Source Document Database

Get in touch with me:

oren@ravendb.net

+972 52-548-6969

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RavenDB - Version 6.2 Now Live

Jan 13 2007

Blog temporarily down: dasBlog Limitations

time to read 2 min | 303 words

Well, it looks like I have run into some limits with dasBlog.

I have over 2,000 posts, and close to 1,200 files in my content directory. It gets to the points that just opening the directory has a noticable delay.
Trying to run dasBlog currently takes roughly 100% of the CPU, and takes forever. This is on my machine, by the way, so it is single user only.

Trying that on the server apperantly killed it.

Profiling it shows that the fault is probably with the template processor, AddParsedObject and InitializeMacro. That is about all the information that I managed to get from VS profiler, I am currently trying out dotTrace, to see if it can gives me a better idea about what is going on there.

Using dotTrace, the picture is much clearer, it looks like the cost is in iterating over all the past entries, you can take a look here for the details:

I removed all the entries from July 06 and backward, and this seems to bring the blog to a working state again. This is a temporary measure only. I am not willing to give up 2+ years of blogging. I have uploaded the dtc (dot trace snapshot) here, if anybody is interested in taking a look I can provide the full backup history, which put dasBlog through the grinder.

At the same time, I am investigating Subtext, which may be more appropriate for my kind of blog. The main concerns are not breaking links (but it is acceptable to have redirect) and having to re-do the blog design.

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RECENT COMMENTS

Dmitry, Yes, but this is _known_ to be a 64 bits system - since we are allocating 3GB (not possible in 64 bits). Note t...

By Oren Eini on Answer: What does this code do?
That's why it is a good idea to compare the return value of `write` to the buffer size. "size_t" can be 32-bit on some system...

By Dmitry on Answer: What does this code do?
There's a reason we miss `write_exact` and `read_exact` from the standard library. In fact, I am surprised the chunk is actua...

By Pyth0n on Challenge: What does this code do?
kpvleeuwen, I agree, unfortunately I don't have anyone to ask off the top of my head. Thanks, I fixed the headers.

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It could be interesting to reach out to storage firmware developers and ask what write patterns they think would be useful ex...

By kpvleeuwen on Performance discovery: IOPS vs. IOPS

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