From: Thomas Graf <tgraf@infradead.org>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
David Miller <davem@davemloft.net>,
rick.jones2@hp.com, therbert@google.com, wsommerfeld@google.com,
daniel.baluta@gmail.com, netdev@vger.kernel.org
Subject: Re: SO_REUSEPORT - can it be done in kernel?
Date: Tue, 1 Mar 2011 07:18:29 -0500 [thread overview]
Message-ID: <20110301121829.GM9763@canuck.infradead.org> (raw)
In-Reply-To: <1298979909.3284.28.camel@edumazet-laptop>
On Tue, Mar 01, 2011 at 12:45:09PM +0100, Eric Dumazet wrote:
> ethtool -S eth0 | grep rx_pk
> rxq0: rx_pkts: ??
> rxq1: rx_pkts: ??
> rxq2: rx_pkts: ??
> rxq3: rx_pkts: ??
> rxq4: rx_pkts: ??
It could do multiqueue but it doesnt:
[root@hp-bl460cg7-01 ~]# ethtool -S eth0 | grep rx_pk
rxq0: rx_pkts: 1512
rxq1: rx_pkts: 462
rxq2: rx_pkts: 122
rxq3: rx_pkts: 24751393
rxq4: rx_pkts: 35
So, adding a third client making sure it would hit another queue:
rxq0: rx_pkts: 3041
rxq1: rx_pkts: 867
rxq2: rx_pkts: 4610476
rxq3: rx_pkts: 57418776
rxq4: rx_pkts: 40
... makes it use CPU 5 for rxq2 and the qps goes up from 250kqps to 270kqps
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
PerfTop: 18417 irqs/sec kernel:50.2% exact: 0.0% [1000Hz cpu-clock-msecs], (all, CPU: 5)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
samples pcnt function DSO
_______ _____ _____________________________ ___________________________________________________________
12712.00 18.5% _raw_spin_unlock_irqrestore [kernel.kallsyms]
3697.00 5.4% isc_rwlock_lock /usr/lib64/libisc.so.62.0.1
1948.00 2.8% dns_rbt_findnode /usr/lib64/libdns.so.69.0.1
1809.00 2.6% isc_rwlock_unlock /usr/lib64/libisc.so.62.0.1
1631.00 2.4% __do_softirq [kernel.kallsyms]
1237.00 1.8% isc_stats_increment /usr/lib64/libisc.so.62.0.1
1106.00 1.6% clflush_cache_range [kernel.kallsyms]
964.00 1.4% _raw_spin_lock [kernel.kallsyms]
714.00 1.0% be_poll_rx /lib/modules/2.6.38-rc5+/kernel/drivers/net/benet/be2net.ko
630.00 0.9% __pthread_mutex_lock_internal /lib64/libpthread-2.12.so
627.00 0.9% dns_name_fullcompare /usr/lib64/libdns.so.69.0.1
582.00 0.8% dns_rbtnodechain_init /usr/lib64/libdns.so.69.0.1
552.00 0.8% sk_run_filter [kernel.kallsyms]
527.00 0.8% dns_name_getlabelsequence /usr/lib64/libdns.so.69.0.1
525.00 0.8% __pthread_mutex_unlock /lib64/libpthread-2.12.so
492.00 0.7% dns_name_equal /usr/lib64/libdns.so.69.0.1
468.00 0.7% isc___mempool_get /usr/lib64/libisc.so.62.0.1
462.00 0.7% __udp4_lib_lookup [kernel.kallsyms]
457.00 0.7% dns_acl_match /usr/lib64/libdns.so.69.0.1
453.00 0.7% dns_zone_attach /usr/lib64/libdns.so.69.0.1
451.00 0.7% fget_light [kernel.kallsyms]
443.00 0.6% dns_message_rendersection /usr/lib64/libdns.so.69.0.1
431.00 0.6% ipt_do_table [kernel.kallsyms]
429.00 0.6% nf_iterate [kernel.kallsyms]
422.00 0.6% __kmalloc_node_track_caller [kernel.kallsyms]
408.00 0.6% __domain_mapping [kernel.kallsyms]
387.00 0.6% dns_name_hash /usr/lib64/libdns.so.69.0.1
353.00 0.5% copy_user_generic_string [kernel.kallsyms]
349.00 0.5% dns_name_fromwire /usr/lib64/libdns.so.69.0.1
next prev parent reply other threads:[~2011-03-01 12:18 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-27 10:07 SO_REUSEPORT - can it be done in kernel? Daniel Baluta
2011-01-27 15:55 ` Bill Sommerfeld
2011-01-27 21:32 ` Tom Herbert
2011-02-25 12:56 ` Thomas Graf
2011-02-25 19:18 ` Rick Jones
2011-02-25 19:20 ` David Miller
2011-02-26 0:57 ` Herbert Xu
2011-02-26 2:12 ` David Miller
2011-02-26 2:48 ` Herbert Xu
2011-02-26 3:07 ` David Miller
2011-02-26 3:11 ` Herbert Xu
2011-02-26 7:31 ` Eric Dumazet
2011-02-26 7:46 ` David Miller
2011-02-27 11:02 ` Thomas Graf
2011-02-27 11:06 ` Herbert Xu
2011-02-28 3:45 ` Tom Herbert
2011-02-28 4:26 ` Herbert Xu
2011-02-28 11:36 ` Herbert Xu
2011-02-28 13:32 ` Eric Dumazet
2011-02-28 14:13 ` Herbert Xu
2011-02-28 14:22 ` Eric Dumazet
2011-02-28 14:25 ` Herbert Xu
2011-02-28 14:53 ` Eric Dumazet
2011-02-28 15:01 ` Thomas Graf
2011-02-28 14:13 ` Thomas Graf
2011-02-28 16:22 ` Eric Dumazet
2011-02-28 16:37 ` Thomas Graf
2011-02-28 17:07 ` Eric Dumazet
2011-03-01 10:19 ` Thomas Graf
2011-03-01 10:33 ` Eric Dumazet
2011-03-01 11:07 ` Thomas Graf
2011-03-01 11:13 ` Eric Dumazet
2011-03-01 11:27 ` Thomas Graf
2011-03-01 11:45 ` Eric Dumazet
2011-03-01 11:53 ` Herbert Xu
2011-03-01 12:32 ` Herbert Xu
2011-03-01 13:04 ` Eric Dumazet
2011-03-01 13:11 ` Herbert Xu
2011-03-01 13:03 ` Eric Dumazet
2011-03-01 13:18 ` Herbert Xu
2011-03-01 13:52 ` Eric Dumazet
2011-03-01 13:58 ` Herbert Xu
2011-03-01 16:31 ` Eric Dumazet
2011-03-02 0:23 ` Herbert Xu
2011-03-02 2:00 ` Eric Dumazet
2011-03-02 2:39 ` Herbert Xu
2011-03-02 2:56 ` Eric Dumazet
2011-03-02 3:09 ` Herbert Xu
2011-03-02 3:44 ` Eric Dumazet
2011-03-02 7:12 ` Tom Herbert
2011-03-02 7:31 ` Herbert Xu
2011-03-02 8:04 ` Eric Dumazet
2011-03-02 8:07 ` Herbert Xu
2011-03-02 8:24 ` Eric Dumazet
2011-03-01 12:01 ` Thomas Graf
2011-03-01 12:15 ` Herbert Xu
2011-03-01 13:27 ` Herbert Xu
2011-03-01 12:18 ` Thomas Graf [this message]
2011-03-01 12:19 ` Herbert Xu
2011-03-01 13:50 ` Thomas Graf
2011-03-01 14:06 ` Eric Dumazet
2011-03-01 14:22 ` Thomas Graf
2011-03-01 14:30 ` Thomas Graf
2011-03-01 14:52 ` Eric Dumazet
2011-03-01 15:07 ` Thomas Graf
2011-03-01 5:33 ` Eric Dumazet
2011-03-01 12:35 ` Herbert Xu
2011-03-01 12:36 ` [PATCH 3/5] inet: Add ip_make_skb and ip_finish_skb Herbert Xu
2011-03-01 12:36 ` [PATCH 2/5] inet: Remove explicit write references to sk/inet in ip_append_data Herbert Xu
2011-03-02 6:15 ` inet: Replace left-over references to inet->cork Herbert Xu
2011-03-02 7:01 ` David Miller
2011-03-01 12:36 ` [PATCH 1/5] inet: Remove unused sk_sndmsg_* from UFO Herbert Xu
2011-03-01 12:36 ` [PATCH 5/5] udp: Add lockless transmit path Herbert Xu
2011-03-01 12:36 ` [PATCH 4/5] udp: Switch to ip_finish_skb Herbert Xu
2011-03-01 16:43 ` SO_REUSEPORT - can it be done in kernel? Eric Dumazet
2011-03-01 20:36 ` David Miller
2011-02-28 11:41 ` [PATCH 1/5] net: Remove unused sk_sndmsg_* from UFO Herbert Xu
2011-03-01 5:31 ` Eric Dumazet
2011-02-28 11:41 ` [PATCH 2/5] net: Remove explicit write references to sk/inet in ip_append_data Herbert Xu
2011-03-01 5:31 ` Eric Dumazet
2011-02-28 11:41 ` [PATCH 3/5] inet: Add ip_make_skb and ip_send_skb Herbert Xu
2011-03-01 5:31 ` Eric Dumazet
2011-02-28 11:41 ` [PATCH 4/5] udp: Add lockless transmit path Herbert Xu
2011-02-28 11:41 ` Herbert Xu
2011-03-01 5:30 ` Eric Dumazet
2011-02-25 19:21 ` SO_REUSEPORT - can it be done in kernel? Eric Dumazet
2011-02-25 22:48 ` Thomas Graf
2011-02-25 23:15 ` Rick Jones
2011-02-25 19:51 ` Tom Herbert
2011-02-25 22:58 ` Thomas Graf
2011-02-25 23:33 ` Bill Sommerfeld
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