----- Original Message ----- From: "Andrew Piskorski" <[EMAIL PROTECTED]> To: <sqlite-users@sqlite.org> Sent: Friday, July 15, 2005 1:05 PM Subject: Re: [sqlite] Multi-threading.
> On Fri, Jul 15, 2005 at 04:21:05PM +0300, Cariotoglou Mike wrote: > > > memory and cpu-wise. on Linux, this is nothing, it can handle it easily. > > otoh, 500 threads for windows is business as usual, but threading on > > Linux, is , I hear, iffy at best. > > Linux runs multi-threaded apps (e.g., AOLserver) quite well, and has > for many years - since at least 2000 or so, probably earlier. My > understanding is that the old LinuxThreads implementation had some > pretty ugly bits, but it worked. NPTL is much better, and is standard > with the Linux 2.6.x kernels. the issue wasn't necessarily the thread implementation per se, but the fact that threads were treated as processes for scheduling purposes and hence scheduled with the regular process scheduler, which was not efficient for a large number of processes. these problems went away when ingo molnar's O(1) scheduler was adopted (not sure when it was merged into linus' 2.4, but distros adopted it quite fast). -p
