On Mon, 11 Mar 2002, Edward Millington wrote: > >>db_cache_mem" can chenge performance, not hit ratio > > When you state performance, do you mean response time and req/sec?
Yes. > > BTW, I forgot to note: there is library which someone on the IBM wrote > which > > make M:N thread scheduling (this library based on the gnu pth). It will > give > > you less kernel threads and many user-level threads, anf thus can reduce > > problerms with lot of threads under linux. I never tested it. > > Can you shed a little bit more light above. > > Are you saying that oops can use alot more thread under the user thread > instead of the os kernel thread? With standard Linux library (linuxthreads or glibc) you have 1:1 scheduling (i.e. one thread in oops requre one thread (process) in kernel). With another library (GNU Pth, for example) you wil have alvays single kernel thread regardles of number of threads oops create during runtime N:1 There is another approach - N:M schema, where you can have lot of application threads ans small number of kernel threads. This can resolve problems with linuxthreads when application create lot of threads. > > Nice that you still remember that I have an IBM :) > > So this seems to be a problem IBM create on there machines? Not at all :) > > Thank you very much. > > Best regards, > > Edward Millington. BSc, Network+ > Systems Administrator > Cariaccess Communications Ltd. > Palm Plaza > Wildey > St. Michael > Barbados > 1-246-430-7435 > Fax : 1-246-431-0170 > [EMAIL PROTECTED] > www.cariaccess.com > > > ===================================================================== > If you would like to unsubscribe from this list send message to > [EMAIL PROTECTED] with "unsubscribe oops-eng" in message body. > Archive is accessible on http://lists.paco.net/oops-eng/ > Igor Khasilev | PACO Links, igor at paco dot net | ===================================================================== If you would like to unsubscribe from this list send message to [EMAIL PROTECTED] with "unsubscribe oops-eng" in message body. Archive is accessible on http://lists.paco.net/oops-eng/
