On Sun, May 18, 2003 at 05:14:33PM +0100, Roger Hayter wrote: > I have observed that with my particular setup the routine use of nice > with Freenet in Linux is not helpful. It leads to load averages of 1.5 > to 4 instead of 0.5 to 1.5 using standard priority. > > Linux 2.4.19. Duron 1.2GHz, 256MB RAM, two nodes, one standard using > 596 and one with a low number of threads using 6034. Limited bandwidth > from 2.5kB/s 10kB/s. Network load usually between 250 and 900. Waiting > to send 1MB or so only about half the time. Is there a diagnostic metric > for time spent waiting for bandwidth? Sun 1.4.1 or 1.4.2 beta. > > With nice -10 there is much more context switching and paging,
Be very careful here. What priority are you setting it to, 10 or -10? > presumably because threads are not being allowed to finish what they are > doing. In both cases, CPU is "idle" for 40-80% of time. Is there a way > of measuring "voluntary" and "involuntary" context switching in Linux? I > presume a thread waiting for bandwidth in some way will voluntarily > relinquish control of the CPU. > -- > Roger Hayter -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <https://emu.freenetproject.org/pipermail/devl/attachments/20030519/70833fdf/attachment.pgp>
