Someone posted to turn CFS off. I wasn't sure what that was, after I looked it up I still unsure why someone use that for Lucene.
Michael -----Original Message----- From: Otis Gospodnetic [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 27, 2005 6:20 PM To: java-user@lucene.apache.org; [EMAIL PROTECTED] Subject: RE: Hardware Question What's CFS? Cryptographic File System? I'm not being sarcastic here, I'm really curious about what you referring to. Otis --- Mark Bennett <[EMAIL PROTECTED]> wrote: > Also, non-hardware, have you considered turning off CFS? > > Our client told us this sped up their system. > > -----Original Message----- > From: Chris Lamprecht [mailto:[EMAIL PROTECTED] > Sent: Wednesday, July 27, 2005 11:52 AM > To: java-user@lucene.apache.org > Subject: Re: Hardware Question > > It depends on your usage. When you search, does your code also > retrieve the docs (using Searcher.document(n), for instance). If > your > index is 8GB, part of that is the "indexed" part (searchable), and > part is just "stored" document fields. > > It may be as simple as adding more RAM (try 4, 6, and 8GB) -- but not > for your java heap -- instead for the linux filesystem cache. > > I suggest first adding some simple timing output to your search. You > want to see how much time you are spending in the call to search(), > and then how much time you're spending pulling the Documents from the > index (and how much time you're spending in other parts of your > search > application). The call to search() is typically CPU-intensive, > while > pulling Documents is I/O-bound. And RAM is about 5 or 6 orders of > magnitude faster than disk I/O. > > -chris > > On 7/27/05, Michael Celona <[EMAIL PROTECTED]> wrote: > > I am going over ways to increase overall search performance. > > > > > > > > Currently, I have a dual zeon with 2G of ram dedicated to java > searching > an > > 8G index on one 7200 rpm drive. > > > > > > > > Which will give the greatest payoff? > > > > > > > > 1) Going to 64bit server and giving more memory to java with > faster > > drives > > > > > > > > Or > > > > > > > > 2) Staying with 32bit server but going with faster drives and > > splitting the operating system from the index drive. > > > > > > > > > > > > Basically, what are the performance improvements from separating > the > > operation system form the index drive(s). > > > > > > > > > > > > Thanks, > > > > Michael > > > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
