如何可靠地测量进程使用的networking带宽

我开发了一个应用程序,我想测量在一些典型的testing案例中它消耗了多lessnetworking带宽

我发现一些像nethog等应用程序,但我不知道它的报告是多么准确!

我想以某种方式来非常准确地衡量相同的结果需要进入一个会议的报告。

如果有人指导我如何做,我愿意为此写出定制的解决scheme!

我想要一些可以运行监视程序和我的目标应用程序来获取networking使用情况统计信息 – 累积字节数/ rcvd。 最大使用量和平均使用量等

应用程序可以在一台机器上隔离吗?
还有其他的东西是否需要在系统上运行?

如果一个系统可以这样专用,定期从/proc/net/netstat获取最后一行,并减去InOctetsOutOctets的相应值。

这个系统Fedora 15在23天的正常运行时间后显示:

 TcpExt: SyncookiesSent SyncookiesRecv SyncookiesFailed EmbryonicRsts PruneCalled RcvPruned OfoPruned OutOfWindowIcmps LockDroppedIcmps ArpFilter TW TWRecycled TWKilled PAWSPassive PAWSActive PAWSEstab DelayedACKs DelayedACKLocked DelayedACKLost listnOverflows listnDrops TCPPrequeued TCPDirectCopyFromBacklog TCPDirectCopyFromPrequeue TCPPrequeueDropped TCPHPHits TCPHPHitsToUser TCPPureAcks TCPHPAcks TCPRenoRecovery TCPSackRecovery TCPSACKReneging TCPFACKReorder TCPSACKReorder TCPRenoReorder TCPTSReorder TCPFullUndo TCPPartialUndo TCPDSACKUndo TCPLossUndo TCPLoss TCPLostRetransmit TCPRenoFailures TCPSackFailures TCPLossFailures TCPFastRetrans TCPForwardRetrans TCPSlowStartRetrans TCPTimeouts TCPRenoRecoveryFail TCPSackRecoveryFail TCPSchedulerFailed TCPRcvCollapsed TCPDSACKOldSent TCPDSACKOfoSent TCPDSACKRecv TCPDSACKOfoRecv TCPAbortOnSyn TCPAbortOnData TCPAbortOnClose TCPAbortOnMemory TCPAbortOnTimeout TCPAbortOnLinger TCPAbortFailed TCPMemoryPressures TCPSACKDiscard TCPDSACKIgnoredOld TCPDSACKIgnoredNoUndo TCPSpuriousRTOs TCPMD6NotFound TCPMD5Unexpected TCPSackShifted TCPSackMerged TCPSackShiftFallback TCPBacklogDrop TCPMinTTLDrop TCPDeferAcceptDrop IPReversePathFilter TCPTimeWaitOverflow TCPReqQFullDoCookies TCPReqQFullDrop TcpExt: 0 0 0 0 0 0 0 0 10 0 67116 0 0 0 0 8 117271 53 18860 0 0 102295 23352211 87967244 0 16861098 118195 893786 881659 0 29 10 0 0 0 9 10 16 12 2321 21 0 1 156 39 940 13 921 8015 0 1 2 0 18461 22 941 0 0 2974 15422 0 709 0 0 0 1 8 119 3 0 0 0 0 25231 0 0 0 4 0 0 0 IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets InBcastOctets OutBcastOctets IpExt: 0 0 25308 48 725 1 24434248973 4218365129 2181277 13241 365505 65 

当然,这种格式在这里是不友好的,但脚本语言处理相当不错。 你可以看到信息的深度和多样性! 最后一行显示该系统已经读取了24,434,248,973个字节并写入了4,218,365,129。 (刮大网站的第九天)

扯远了一些,我看到procfs包含什么似乎是每进程网络I / O统计。

 [wally@lenovotower ~]$ cat /proc/32089/net/dev Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed lo: 622834 6102 0 0 0 0 0 0 622834 6102 0 0 0 0 0 0 eth0: 3290609241 20752766 0 0 0 0 0 0 161708339 16831446 0 0 0 0 0 0 virbr0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 

如果这是一个长期运行的过程,那么这可以用来计算使用的带宽。

—编辑—尽管路径,正如别人指出的,这些对于所有进程是一样的,因此显然不是每进程的网络I / O统计。

获得每个任务网络统计数据的唯一方法是使用某种类型的taskstats接口(基于netlink)。 不幸的是,它记录了一切你能想象的但是网络信息。 我已经做了一个套接字写/读的记帐字节和两个条目(对tx / Rx)在taskstats从我的系统获取这种信息的小补丁。

包括:

 Signed-off-by: Rafael David Tinoco <tinhocas@gmail.com> diff --git a/include/linux/taskstats.hb/include/linux/taskstats.h index 341dddb..b0c5990 100644 --- a/include/linux/taskstats.h +++ b/include/linux/taskstats.h @@ -163,6 +163,10 @@ struct taskstats { /* Delay waiting for memory reclaim */ __u64 freepages_count; __u64 freepages_delay_total; + + /* Per-task network I/O accounting */ + __u64 read_net_bytes; /* bytes of socket read I/O */ + __u64 write_net_bytes; /* bytes of socket write I/O */ }; 

和源代码:

 Signed-off-by: Rafael David Tinoco <tinhocas@gmail.com> diff --git a/include/linux/task_io_accounting.hb/include/linux/task_io_accounting.h index bdf855c..bd45b92 100644 --- a/include/linux/task_io_accounting.h +++ b/include/linux/task_io_accounting.h @@ -41,5 +41,12 @@ struct task_io_accounting { * information loss in doing that. */ u64 cancelled_write_bytes; + + /* The number of bytes which this task has read from a socket */ + u64 read_net_bytes; + + /* The number of bytes which this task has written to a socket */ + u64 write_net_bytes; + #endif /* CONFIG_TASK_IO_ACCOUNTING */ }; diff --git a/include/linux/task_io_accounting_ops.hb/include/linux/task_io_accounting_ops.h index 4d090f9..ee8416f 100644 --- a/include/linux/task_io_accounting_ops.h +++ b/include/linux/task_io_accounting_ops.h @@ -12,6 +12,11 @@ static inline void task_io_account_read(size_t bytes) current->ioac.read_bytes += bytes; } +static inline void task_io_account_read_net(size_t bytes) +{ + current->ioac.read_net_bytes += bytes; +} + /* * We approximate number of blocks, because we account bytes only. * A 'block' is 512 bytes @@ -26,6 +31,11 @@ static inline void task_io_account_write(size_t bytes) current->ioac.write_bytes += bytes; } +static inline void task_io_account_write_net(size_t bytes) +{ + current->ioac.write_net_bytes += bytes; +} + /* * We approximate number of blocks, because we account bytes only. * A 'block' is 512 bytes @@ -59,6 +69,10 @@ static inline void task_io_account_read(size_t bytes) { } +static inline void task_io_account_read_net(size_t bytes) +{ +} + static inline unsigned long task_io_get_inblock(const struct task_struct *p) { return 0; @@ -68,6 +82,10 @@ static inline void task_io_account_write(size_t bytes) { } +static inline void task_io_account_write_net(size_t bytes) +{ +} + static inline unsigned long task_io_get_oublock(const struct task_struct *p) { return 0; diff --git a/include/linux/taskstats.hb/include/linux/taskstats.h index 341dddb..b0c5990 100644 --- a/include/linux/taskstats.h +++ b/include/linux/taskstats.h @@ -163,6 +163,10 @@ struct taskstats { /* Delay waiting for memory reclaim */ __u64 freepages_count; __u64 freepages_delay_total; + + /* Per-task network I/O accounting */ + __u64 read_net_bytes; /* bytes of socket read I/O */ + __u64 write_net_bytes; /* bytes of socket write I/O */ }; diff --git a/kernel/tsacct.cb/kernel/tsacct.c index 00d59d0..b279e69 100644 --- a/kernel/tsacct.c +++ b/kernel/tsacct.c @@ -104,10 +104,14 @@ void xacct_add_tsk(struct taskstats *stats, struct task_struct *p) stats->read_bytes = p->ioac.read_bytes; stats->write_bytes = p->ioac.write_bytes; stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes; + stats->read_net_bytes = p->ioac.read_net_bytes; + stats->write_net_bytes = p->ioac.write_net_bytes; #else stats->read_bytes = 0; stats->write_bytes = 0; stats->cancelled_write_bytes = 0; + stats->read_net_bytes = 0; + stats->write_net_bytes = 0; #endif } #undef KB diff --git a/net/socket.cb/net/socket.c index 769c386..dd7dbb6 100644 --- a/net/socket.c +++ b/net/socket.c @@ -87,6 +87,7 @@ #include <linux/wireless.h> #include <linux/nsproxy.h> #include <linux/magic.h> +#include <linux/task_io_accounting_ops.h> #include <asm/uaccess.h> #include <asm/unistd.h> @@ -538,6 +539,7 @@ EXPORT_SYMBOL(sock_tx_timestamp); static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size) { + int ret; struct sock_iocb *si = kiocb_to_siocb(iocb); int err; @@ -550,7 +552,12 @@ static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock, if (err) return err; - return sock->ops->sendmsg(iocb, sock, msg, size); + ret = sock->ops->sendmsg(iocb, sock, msg, size); + + if (ret > 0) + task_io_account_write_net(ret); + + return ret; } int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size) @@ -666,6 +673,7 @@ EXPORT_SYMBOL_GPL(sock_recv_ts_and_drops); static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { + int ret = 0; struct sock_iocb *si = kiocb_to_siocb(iocb); si->sock = sock; @@ -674,7 +682,12 @@ static inline int __sock_recvmsg_nosec(struct kiocb *iocb, struct socket *sock, si->size = size; si->flags = flags; - return sock->ops->recvmsg(iocb, sock, msg, size, flags); + ret = sock->ops->recvmsg(iocb, sock, msg, size, flags); + + if (ret > 0) + task_io_account_read_net(ret); + + return ret; } static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, 

Vnstat是检查互联网带宽使用情况的简单工具,

这里是安装它的命令

 sudo apt-get install vnstat 

并运行你需要运行下面的命令的vnstat。

 vnstat 

这里( 检查监控网络带宽使用情况 )是检查每日,每周,每月和前10天网络带宽使用情况的更多选项。

希望会帮助大家。

Cat / proc / net / dev这是查找带宽使用情况的方法之一

 gaddenna@gaddenna-Vostro-3546:~$ cat /proc/net/dev Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed wlan1: 9420966650 7703510 0 1 0 0 0 0 673178457 4296602 0 0 0 0 0 0 eth2: 7961371946 6849173 0 10 0 0 0 167030 446826449 3289015 0 0 0 0 0 0 lo: 48209054 473527 0 0 0 0 0 0 48209054 473527 0 0 0 0 0 0