Date: Mon, 17 Nov 2008 22:21:04 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: NET.ISR and CPU utilization performance w/ HP DL 585 using FreeBSD 7.1 Beta2 Message-ID: <gfsn81$46l$2@ger.gmane.org> In-Reply-To: <245613.95922.qm@web45809.mail.sp1.yahoo.com> References: <245613.95922.qm@web45809.mail.sp1.yahoo.com>
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[-- Attachment #1 --] Won De Erick wrote: > I compiled the following em driver for Intel NIC Pro (82571) w/ FreeBSD 7.1 Beta 2 on HPDL 585 machine having 16CPUs. > > http://people.yandex-team.ru/~wawa/ > > With net.isr.direct=1, I made some changes on kthreads(default=2) for em0 and em1's rx. > > dev.em.0.rx_kthreads: 6 > .... > dev.em.1.rx_kthreads: 6 > > With these settings, the result is: > > CPU: 0.0% user, 0.0% nice, 57.2% system, 3.6% interrupt, 39.2% idle > Mem: 17M Active, 7228K Inact, 156M Wired, 76K Cache, 21M Buf, 31G Free > Swap: 4096M Total, 4096M Free > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 52 root 1 43 - 0K 16K CPU12 c 41:38 100.00% em0_rx_kthread_1 > 51 root 1 43 - 0K 16K CPU3 3 41:38 100.00% em0_rx_kthread_0 > 54 root 1 -68 - 0K 16K CPU2 2 39:39 100.00% em1_txcleaner > 1283 root 1 43 - 0K 16K CPU1 1 38:55 100.00% em0_rx_kthread_3 > 1282 root 1 43 - 0K 16K CPU10 a 38:55 100.00% em0_rx_kthread_2 > 1344 root 1 43 - 0K 16K CPU9 9 25:51 100.00% em0_rx_kthread_5 > 1343 root 1 43 - 0K 16K CPU4 4 25:51 100.00% em0_rx_kthread_4 > 12 root 1 171 ki31 0K 16K CPU14 e 44:28 91.70% idle: cpu14 This is very interesting. Do you see real performance (network throughput) increase? [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkkh4EAACgkQldnAQVacBcjqYwCeNzzW4z8+q90S5Sfa4eJBLGkY DwEAnRragJk7hbt9XffwFfxjQtvBBerv =PBXc -----END PGP SIGNATURE-----
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