[web-devel] Caching the System time

Max Cantor mxcantor at gmail.com
Wed Aug 10 19:12:24 CEST 2011

thats exactly what I meant

On Aug 10, 2011, at 12:30 PM, Michael Snoyman wrote:

> Did you mean IORef (Data.Sequence.Seq String)? I'm wondering if a Chan
> might be even better than that.
> On Wed, Aug 10, 2011 at 7:20 AM, Max Cantor <mxcantor at gmail.com> wrote:
>> Just curious, but might it be faster to:
>> replace the MVar handle with an IORef [Data.Sequence.Seq String]
>> logs are appended with atomicModifyIORef
>> then every n seconds, a worker thread uses atomicModifyIORef to clear the sequence and write the log messages to a handle?
>> this way, logging a message doesn't require taking an mvar
>> I have no idea if this is better, just thought i'd throw it out.
>> On Aug 10, 2011, at 11:17 AM, Kazu Yamamoto (山本和彦) wrote:
>>>  Every user-thread of Mighttpd records a log message with Handle.
>>>  Since Handle is protected with MVar, serialization is done. Multiple
>>>  log messages are buffered in the buffer of Handle to reduce the
>>>  number of the write system call. Moreover, I re-implemented hPut to
>>>  reduce unnecessary intermediate data to compose a log message.
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